# Opinion polling for the 2018 Brazilian presidential election

Since the previous elections, various polling companies have published surveys tracking voting intention for the 2018 Brazilian general election. The results of these surveys are listed below in reverse chronological order and include parties whose candidates frequently poll above 3% of the vote as well as the incumbent President of Brazil Michel Temer.

## Presidential election
### First round
#### 2018
##### July–Oct

| Polling firm/link | Date(s) administered | Sample size | Haddad PT | Gomes PDT | Silva REDE | Meirelles MDB | Dias PODE | Alckmin PSDB | Amoêdo NOVO | Bolsonaro PSL | Not affiliated | Others | Abst. Undec. |
| 7 October | Results of the first round | – | 29.3% | 12.5% | 1.0% | 1.2% | 0.8% | 4.8% | 2.5% | 46.0% | – | 1.9% | 1.9% |
| Instituto Veritá | 2–5 October 2018 | 5,208 | 18.8% | 8.4% | 1.4% | 0.8% | 1.0% | 4.2% | 2.9% | 41.5% | _ | 2.0% | 19.0% |
| CNT/MDA | 4–5 October 2018 | 2,002 | 24.0% | 9.9% | 2.2% | 1.6% | 1.7% | 5.8% | 2.3% | 36.7% | _ | 1.9% | 13.8% |
| DataPoder360 | 3–4 October 2018 | 4,000 | 25% | 15% | 2% | 3% | 4% | 7% | 2% | 30% | 5% | 7% |
| Datafolha | 3–4 October 2018 | 19,552 | 22% | 13% | 3% | 2% | 2% | 7% | 3% | 36% | _ | 2% | 10% |
| XP/Ipespe | 3–4 October 2018 | 2,000 | 22% | 11% | 4% | 2% | 2% | 7% | 3% | 36% | – | 1% | 12% |
| Datafolha | 3–4 October 2018 | 10,930 | 22% | 11% | 4% | 2% | 2% | 8% | 3% | 35% | – | 2% | 11% |
| RealTime Big Data | 3–4 October 2018 | 10,000 | 24% | 12% | 4% | 1% | 1% | 6% | 2% | 34% | – | 1% | 15% |
| Paraná Pesquisas/Crusoé Archived 2018-10-06 at the Wayback Machine | 2–4 October 2018 | 2,080 | 21.8% | 9.4% | 3.5% | 1.7% | 1.4% | 7.4% | 3.1% | 34.9% | – | 2.1% | 14.7% |
| Ibope | 1–2 October 2018 | 3,010 | 22% | 11% | 3% | 2% | 1% | 7% | 2% | 36% | – | 4% | 12% |
| Ibope | 1–2 October 2018 | 3,010 | 23% | 10% | 4% | 2% | 1% | 7% | 2% | 32% | – | 2% | 17% |
| Datafolha | 29–30 September 2018 | 3,240 | 21% | 11% | 4% | 2% | 2% | 9% | 3% | 32% | – | 2% | 13% |
| Ibope | 29–30 September 2018 | 3,010 | 21% | 11% | 4% | 2% | 2% | 8% | 3% | 31% | – | 1% | 17% |
| FSB Pesquisa | 29–30 September 2018 | 2,000 | 24% | 9% | 4% | 2% | 2% | 11% | 5% | 31% | – | 1% | 12% |
| CNT/MDA Archived 2018-09-30 at the Wayback Machine | 27–28 September 2018 | 2,000 | 25.2% | 9.4% | 2.6% | 2.0% | 1.7% | 7.3% | 2.0% | 28.2% | | 1.6% | 20.0% |
| Datafolha | 26–28 September 2018 | 9,000 | 22% | 11% | 5% | 2% | 2% | 10% | 3% | 28% | – | 3% | 15% |
| XP/Ipespe | 24–26 September 2018 | 2,000 | 21% | 11% | 5% | 2% | 2% | 8% | 3% | 28% | – | 3% | 17% |
| Paraná Pesquisas/Crusoé | 23–25 September 2018 | 2,020 | 20.2% | 10.1% | 4.3% | 1.3% | 1.9% | 7.6% | 3.8% | 31.2% | – | 1.4% | 18.2% |
| Ibope | 22–24 September 2018 | 2,000 | 21% | 12% | 6% | 2% | 2% | 8% | 3% | 27% | – | 1% | 18% |
| IstoÉ/Sensus | 21–24 September 2018 | 2,000 | 24.5% | 7.7% | 2.7% | 1.6% | 1.7% | 5.6% | 1.9% | 30.6% | – | 1.3% | 22.4% |
| FSB Pesquisa | 22–23 September 2018 | 2,000 | 23% | 10% | 5% | 3% | 2% | 8% | 3% | 33% | – | 1% | 13% |
| Ibope | 22–23 September 2018 | 2,506 | 22% | 11% | 5% | 2% | 2% | 8% | 3% | 28% | – | 1% | 18% |
| DataPoder360 | 19–20 September 2018 | 4,000 | 22% | 14% | 4% | 3% | 3% | 6% | 1% | 26% | – | 5% | 15% |
| Datafolha | 18–19 September 2018 | 8,601 | 16% | 13% | 7% | 2% | 3% | 9% | 3% | 28% | – | 2% | 17% |
| Genial Investimentos/Brasilis | 17–19 September 2018 | 1,000 | 17% | 7% | 6% | 3% | 4% | 7% | 5% | 30% | – | 4% | 18% |
| XP/Ipespe | 17–19 September 2018 | 2,000 | 16% | 11% | 6% | 2% | 3% | 7% | 3% | 28% | – | 1% | 23% |
| Ibope | 16–18 September 2018 | 2,506 | 19% | 11% | 6% | 2% | 2% | 7% | 2% | 28% | – | 1% | 21% |
| FSB Pesquisa | 15–16 September 2018 | 2,000 | 16% | 14% | 5% | 2% | 2% | 6% | 4% | 33% | – | 2% | 16% |
| CNT/MDA | 12–15 September 2018 | 2,002 | 17.6% | 10.8% | 4.1% | 1.7% | 1.9% | 6.1% | 2.8% | 28.2% | – | 1.1% | 25.7% |
| Datafolha | 13–14 September 2018 | 2,820 | 13% | 13% | 8% | 3% | 3% | 9% | 3% | 26% | – | 3% | 19% |
| XP/Ipespe | 10–12 September 2018 | 2,000 | 10% | 12% | 8% | 2% | 4% | 9% | 4% | 26% | – | 2% | 23% |
| Paraná Pesquisas/Crusoé | 7–11 September 2018 | 2,010 | 8.3% | 11.9% | 10.6% | 2.4% | 3.7% | 8.7% | 3.3% | 26.6% | – | 2.7% | 21.8% |
| Datafolha | 10 September 2018 | 2,804 | 9% | 13% | 11% | 3% | 3% | 10% | 3% | 24% | – | 3% | 22% |
| Ibope | 8–10 September 2018 | 2,002 | 8% | 11% | 9% | 3% | 3% | 9% | 3% | 26% | – | 2% | 26% |
| FSB Pesquisa | 8–9 September 2018 | 2,000 | 8% | 12% | 8% | 3% | 3% | 8% | 3% | 30% | – | 2% | 24% |
| RealTime Big Data | 7–9 September 2018 | 3,200 | 7% | 11% | 11% | 2% | 4% | 9% | 3% | 25% | – | 2% | 26% |
| On 6 September 2018, Jair Bolsonaro was stabbed while he was campaigning in Juiz de Fora, Minas Gerais. ||||||||||||||
| XP/Ipespe | 3–5 September 2018 | 2,000 | 8% | 11% | 11% | 1% | 4% | 9% | 4% | 23% | | 2% | 27% |
| Ibope | 1–3 September 2018 | 2,002 | 6% | 12% | 12% | 2% | 3% | 9% | 3% | 22% | – | 3% | 28% |
| FSB Pesquisa | 1–2 September 2018 | 2,000 | 6% | 12% | 11% | 1% | 3% | 8% | 4% | 26% | – | 2% | 28% |

##### Apr–Aug

| Polling firm/link | Date(s) administered | Sample size | PT | PDT | PSB | REDE | MDB | PODE | PSDB | NOVO | PSL | Not affiliated | Others | Abst. Undec. |
| On 31 August 2018, the Superior Electoral Court votes to officially reject Luiz Inácio Lula da Silva's candidacy. |||||||||||||||
| XP/Ipespe | 27–29 August 2018 | 1,000 | 6% (Haddad) | 10% (Gomes) | – | 13% (Silva) | 1% (Meirelles) | 4% (Dias) | 9% (Alckmin) | 4% (Amoedo) | 23% (Bolsonaro) | – | 6% | 27% |
| XP/Ipespe | 27–29 August 2018 | 1,000 | 13% (Haddad, supported by Lula) | 10% (Gomes) | – | 10% (Silva) | 1% (Meirelles) | 4% (Dias) | 8% (Alckmin) | 4% (Amoedo) | 21% (Bolsonaro) | – | 6% | 28% |
| XP/Ipespe | 27–29 August 2018 | 1,000 | 33% (Lula) cannot run in election | 8% (Gomes) | – | 7% (Silva) | 1% (Meirelles) | 3% (Dias) | 7% (Alckmin) | 4% (Amoedo) | 21% (Bolsonaro) | – | 5% | 15% |
| DataPoder360 | 24–27 August 2018 | 5,500 | 30% (Lula) cannot run in election | 7% (Gomes) | | 6% (Silva) | 2% (Meirelles) | 3% (Dias) | 7% (Alckmin) | 1% (Amoedo) | 21% (Bolsonaro) | – | 7% | 18% |
| FSB Pesquisa | 25–26 August 2018 | 2,000 | 5% (Haddad) | 8% (Gomes) | – | 15% (Silva) | 1% (Meirelles) | 3% (Dias) | 9% (Alckmin) | 4% (Amoedo) | 24% (Bolsonaro) | – | 4% | 28% |
| FSB Pesquisa | 25–26 August 2018 | 2,000 | 35% (Lula) cannot run in election | 5% (Gomes) | – | 9% (Silva) | 1% (Meirelles) | 2% (Dias) | 6% (Alckmin) | 4% (Amoedo) | 22% (Bolsonaro) | – | 2% | 15% |
| XP/Ipespe | 20–22 August 2018 | 1,000 | 6% (Haddad) | 8% (Gomes) | – | 12% (Silva) | 2% (Meirelles) | 5% (Dias) | 8% (Alckmin) | 2% (Amoedo) | 23% (Bolsonaro) | – | 5% | 30% |
| XP/Ipespe | 20–22 August 2018 | 1,000 | 13% (Haddad, supported by Lula) | 8% (Gomes) | – | 9% (Silva) | 1% (Meirelles) | 5% (Dias) | 8% (Alckmin) | 1% (Amoedo) | 20% (Bolsonaro) | – | 4% | 31% |
| XP/Ipespe | 20–22 August 2018 | 1,000 | 32% (Lula) cannot run in election | 7% (Gomes) | – | 7% (Silva) | 1% (Meirelles) | 4% (Dias) | 7% (Alckmin) | 2% (Amoedo) | 20% (Bolsonaro) | – | 3% | 18% |
| Datafolha | 20–21 August 2018 | 8,433 | 4% (Haddad) | 10% (Gomes) | – | 16% (Silva) | 2% (Meirelles) | 4% (Dias) | 9% (Alckmin) | 2% (Amoedo) | 22% (Bolsonaro) | – | 4% | 28% |
| Datafolha | 20–21 August 2018 | 8,433 | 39% (Lula) cannot run in election | 5% (Gomes) | – | 8% (Silva) | 1% (Meirelles) | 3% (Dias) | 6% (Alckmin) | 2% (Amoedo) | 19% (Bolsonaro) | – | 3% | 14% |
| Ibope | 17–19 August 2018 | 2,002 | 4% (Haddad) | 9% (Gomes) | – | 12% (Silva) | 1% (Meirelles) | 3% (Dias) | 7% (Alckmin) | 1% (Amoedo) | 20% (Bolsonaro) | – | 6% | 38% |
| Ibope | 17–19 August 2018 | 2,002 | 37% (Lula) cannot run in election | 5% (Gomes) | – | 6% (Silva) | 1% (Meirelles) | 3% (Dias) | 5% (Alckmin) | 1% (Amoedo) | 18% (Bolsonaro) | – | 3% | 22% |
| CNT/MDA | 15–18 August 2018 | 2,002 | 37.7% (Lula) cannot run in election | 4.1% (Gomes) | – | 5.6% (Silva) | 0.8% (Meirelles) | 2.7% (Dias) | 4.9% (Alckmin) | | 18.8% (Bolsonaro) | – | 2.2% | 23.1% |
| Ipespe | 13–15 August 2018 | 1,000 | 7% (Haddad) | 8% (Gomes) | – | 11% (Silva) | 2% (Meirelles) | 5% (Dias) | 9% (Alckmin) | | 23% (Bolsonaro) | – | 4% | 31% |
| Ipespe | 13–15 August 2018 | 1,000 | 15% (Haddad, supported by Lula) | 7% (Gomes) | – | 9% (Silva) | 2% (Meirelles) | 6% (Dias) | 9% (Alckmin) | | 21% (Bolsonaro) | – | 4% | 28% |
| Ipespe | 13–15 August 2018 | 1,000 | 31% (Lula) cannot run in election | 7% (Gomes) | – | 8% (Silva) | 1% (Meirelles) | 5% (Dias) | 9% (Alckmin) | | 20% (Bolsonaro) | – | 3% | 16% |
| Paraná Pesquisas | 9–13 August 2018 | 2,002 | 3.8% (Haddad) | 10.2% (Gomes) | – | 13.2% (Silva) | 0.9% (Meirelles) | 4.9% (Dias) | 8.5% (Alckmin) | | 23.9% (Bolsonaro) | – | 4.9% | 29.9% |
| Paraná Pesquisas | 9–13 August 2018 | 2,002 | 30.8% (Lula) cannot run in election | 5.9% (Gomes) | – | 8.1% (Silva) | 0.7% (Meirelles) | 4.0% (Dias) | 6.6% (Alckmin) | | 22.0% (Bolsonaro) | – | 3.2% | 18.9% |
| Ipespe | 6–8 August 2018 | 1,000 | 3% (Haddad) | 8% (Gomes) | – | 12% (Silva) | 2% (Meirelles) | 4% (Dias) | 10% (Alckmin) | | 23% (Bolsonaro) | – | 3% | 34% |
| Ipespe | 6–8 August 2018 | 1,000 | 13% (Haddad, supported by Lula) | 7% (Gomes) | – | 10% (Silva) | 2% (Meirelles) | 5% (Dias) | 9% (Alckmin) | | 21% (Bolsonaro) | – | 3% | 30% |
| Ipespe | 6–8 August 2018 | 1,000 | 31% (Lula) cannot run in election | 6% (Gomes) | – | 8% (Silva) | 2% (Meirelles) | 5% (Dias) | 9% (Alckmin) | | 19% (Bolsonaro) | – | 3% | 17% |
| Ipespe | 6–8 August 2018 | 1,000 | – | 9% (Gomes) | – | 12% (Silva) | 3% (Meirelles) | 5% (Dias) | 10% (Alckmin) | | 23% (Bolsonaro) | – | 4% | 34% |
| Ipespe | 30 July–1 August 2018 | 1,000 | 2% (Haddad) | 10% (Gomes) | – | 11% (Silva) | 2% (Meirelles) | 5% (Dias) | 10% (Alckmin) | | 22% (Bolsonaro) | – | 3% | 34% |
| Ipespe | 30 July–1 August 2018 | 1,000 | 13% (Haddad, supported by Lula) | 8% (Gomes) | – | 9% (Silva) | 2% (Meirelles) | 4% (Dias) | 9% (Alckmin) | | 20% (Bolsonaro) | – | 3% | 31% |
| Ipespe | 30 July–1 August 2018 | 1,000 | 31% (Lula) cannot run in election | 7% (Gomes) | – | 8% (Silva) | 2% (Meirelles) | 4% (Dias) | 9% (Alckmin) | | 19% (Bolsonaro) | – | 3% | 18% |
| Ipespe | 30 July–1 August 2018 | 1,000 | – | 10% (Gomes) | – | 11% (Silva) | 3% (Meirelles) | 5% (Dias) | 10% (Alckmin) | | 22% (Bolsonaro) | – | 3% | 35% |
| Paraná Pesquisas | 25–30 July 2018 | 2,240 | 2.8% (Haddad) | 10.7% (Gomes) | – | 14.4% (Silva) | 1.1% (Meirelles) | 5.0% (Dias) | 7.8% (Alckmin) | | 23.6% (Bolsonaro) | – | 5.3% | 29.4% |
| Paraná Pesquisas | 25–30 July 2018 | 2,240 | 29.0% (Lula) cannot run in election | 6.0% (Gomes) | – | 9.2% (Silva) | 0.8% (Meirelles) | 4.2% (Dias) | 6.2% (Alckmin) | | 21.8% (Bolsonaro) | – | 3.6% | 19.2% |
| Paraná Pesquisas | 25–30 July 2018 | 2,240 | 2.8% (Wagner) | 10.8% (Gomes) | – | 14.3% (Silva) | 1.2% (Meirelles) | 4.9% (Dias) | 7.9% (Alckmin) | | 23.5% (Bolsonaro) | – | 5.9% | 28.9% |
| DataPoder360 | 25–28 July 2018 | 3,000 | 5% (Haddad) | 13% (Gomes) | – | 6% (Silva) | – | 4% (Dias) | 9% (Alckmin) | | 20% (Bolsonaro) | – | – | 43% |
| Ipespe Archived 2018-07-27 at the Wayback Machine | 23–25 July 2018 | 1,000 | 2% (Haddad) | 10% (Gomes) | – | 13% (Silva) | 2% (Meirelles) | 5% (Dias) | 10% (Alckmin) | | 23% (Bolsonaro) | – | 2% | 30% |
| Ipespe Archived 2018-07-27 at the Wayback Machine | 23–25 July 2018 | 1,000 | 12% (Haddad, supported by Lula) | 9% (Gomes) | – | 10% (Silva) | 1% (Meirelles) | 5% (Dias) | 9% (Alckmin) | | 22% (Bolsonaro) | – | 3% | 29% |
| Ipespe Archived 2018-07-27 at the Wayback Machine | 23–25 July 2018 | 1,000 | 30% (Lula) cannot run in election | 8% (Gomes) | – | 8% (Silva) | 1% (Meirelles) | 5% (Dias) | 9% (Alckmin) | | 20% (Bolsonaro) | – | 2% | 17% |
| Ipespe Archived 2018-07-27 at the Wayback Machine | 23–25 July 2018 | 1,000 | – | 10% (Gomes) | – | 12% (Silva) | 2% (Meirelles) | 5% (Dias) | 10% (Alckmin) | | 23% (Bolsonaro) | – | 3% | 34% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | 3% (Haddad) | 8% (Gomes) | – | 13% (Silva) | 2% (Meirelles) | 5% (Dias) | 7% (Alckmin) | | 19% (Bolsonaro) | – | 3% | 39% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | 29% (Lula) cannot run in election | 7% (Gomes) | – | 10% (Silva) | 2% (Meirelles) | 4% (Dias) | 7% (Alckmin) | | 17% (Bolsonaro) | – | 4% | 20% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | 3% (Wagner) | 8% (Gomes) | – | 14% (Silva) | 2% (Meirelles) | 4% (Dias) | 7% (Alckmin) | | 19% (Bolsonaro) | – | 3% | 37% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | 9% (some candidate supported by Lula) | 7% (Gomes) | – | 11% (Silva) | 2% (Meirelles) | 4% (Dias) | 6% (Alckmin) | | 19% (Bolsonaro) | – | 5% | 37% |
| Vox Populi | 18–20 July 2018 | 2,000 | 41% (Lula) cannot run in election | 5% (Gomes) | – | 4% (Silva) | 0% (Meirelles) | 1% (Dias) | 4% (Alckmin) | | 12% (Bolsonaro) | – | 3% | 30% |
| Vox Populi | 18–20 July 2018 | 2,000 | 44% (Lula) cannot run in election | 4% (Gomes) | – | 5% (Silva) | – | – | 4% (Alckmin) | | 14% (Bolsonaro) | – | – | 28% |
| Ipespe Archived 2018-07-21 at the Wayback Machine | 16–18 July 2018 | 1,000 | 2% (Haddad) | 10% (Gomes) | – | 12% (Silva) | 2% (Meirelles) | 5% (Dias) | 8% (Alckmin) | | 23% (Bolsonaro) | – | 3% | 33% |
| Ipespe Archived 2018-07-21 at the Wayback Machine | 16–18 July 2018 | 1,000 | 13% (Haddad, supported by Lula) | 8% (Gomes) | – | 10% (Silva) | 2% (Meirelles) | 5% (Dias) | 7% (Alckmin) | | 21% (Bolsonaro) | – | 3% | 31% |
| Ipespe Archived 2018-07-21 at the Wayback Machine | 16–18 July 2018 | 1,000 | 29% (Lula) cannot run in election | 7% (Gomes) | – | 8% (Silva) | 1% (Meirelles) | 5% (Dias) | 7% (Alckmin) | | 20% (Bolsonaro) | – | 3% | 19% |
| Ipespe Archived 2018-07-21 at the Wayback Machine | 16–18 July 2018 | 1,000 | – | 10% (Gomes) | – | 12% (Silva) | 2% (Meirelles) | 5% (Dias) | 9% (Alckmin) | | 23% (Bolsonaro) | – | 3% | 36% |
| Ipespe Archived 2018-07-13 at the Wayback Machine | 9–11 July 2018 | 1,000 | 2% (Haddad) | 9% (Gomes) | – | 14% (Silva) | 3% (Meirelles) | 5% (Dias) | 8% (Alckmin) | | 24% (Bolsonaro) | – | 4% | 31% |
| Ipespe Archived 2018-07-13 at the Wayback Machine | 9–11 July 2018 | 1,000 | 12% (Haddad, supported by Lula) | 8% (Gomes) | – | 11% (Silva) | 2% (Meirelles) | 4% (Dias) | 7% (Alckmin) | | 21% (Bolsonaro) | – | 4% | 31% |
| Ipespe Archived 2018-07-13 at the Wayback Machine | 9–11 July 2018 | 1,000 | 30% (Lula) cannot run in election | 7% (Gomes) | – | 10% (Silva) | 2% (Meirelles) | 5% (Dias) | 7% (Alckmin) | | 20% (Bolsonaro) | – | 3% | 15% |
| Ipespe Archived 2018-07-13 at the Wayback Machine | 9–11 July 2018 | 1,000 | – | 9% (Gomes) | – | 13% (Silva) | 2% (Meirelles) | 5% (Dias) | 8% (Alckmin) | | 23% (Bolsonaro) | – | 5% | 35% |
| Ipespe | 2–4 July 2018 | 1,000 | 2% (Haddad) | 10% (Gomes) | – | 13% (Silva) | 2% (Meirelles) | 5% (Dias) | 8% (Alckmin) | | 23% (Bolsonaro) | – | 4% | 33% |
| Ipespe | 2–4 July 2018 | 1,000 | 11% (Haddad, supported by Lula) | 8% (Gomes) | – | 11% (Silva) | 2% (Meirelles) | 5% (Dias) | 7% (Alckmin) | | 21% (Bolsonaro) | – | 4% | 29% |
| Ipespe | 2–4 July 2018 | 1,000 | 28% (Lula) cannot run in election | 7% (Gomes) | – | 9% (Silva) | 1% (Meirelles) | 5% (Dias) | 7% (Alckmin) | | 20% (Bolsonaro) | – | 3% | 19% |
| Ipespe | 2–4 July 2018 | 1,000 | – | 10% (Gomes) | – | 12% (Silva) | 2% (Meirelles) | 5% (Dias) | 8% (Alckmin) | | 23% (Bolsonaro) | – | 4% | 35% |
| DataPoder360 | 25–29 June 2018 | 5,500 | 5% (Haddad) | 12% (Gomes) | – | 7% (Silva) | 1% (Meirelles) | 4% (Dias) | 7% (Alckmin) | | 18% (Bolsonaro) | – | 5% | 42% |
| DataPoder360 | 25–29 June 2018 | 5,500 | 6% (Haddad) | 13% (Gomes) | – | 7% (Silva) | – | 5% (Dias) | 8% (Alckmin) | | 21% (Bolsonaro) | – | – | 40% |
| Ipespe | 25–27 June 2018 | 1,000 | 2% (Haddad) | 11% (Gomes) | – | 12% (Silva) | 1% (Meirelles) | 5% (Dias) | 8% (Alckmin) | | 22% (Bolsonaro) | – | 4% | 34% |
| Ipespe | 25–27 June 2018 | 1,000 | 11% (Haddad, supported by Lula) | 8% (Gomes) | – | 10% (Silva) | 2% (Meirelles) | 5% (Dias) | 7% (Alckmin) | | 20% (Bolsonaro) | – | 4% | 33% |
| Ipespe | 25–27 June 2018 | 1,000 | 29% (Lula) cannot run in election | 6% (Gomes) | – | 9% (Silva) | 1% (Meirelles) | 5% (Dias) | 7% (Alckmin) | | 19% (Bolsonaro) | – | 3% | 21% |
| Ipespe | 25–27 June 2018 | 1,000 | – | 10% (Gomes) | – | 12% (Silva) | 1% (Meirelles) | 5% (Dias) | 7% (Alckmin) | | 22% (Bolsonaro) | – | 4% | 39% |
| IBOPE | 21–24 June 2018 | 2,000 | 2% (Haddad) | 8% (Gomes) | – | 13% (Silva) | 1% (Meirelles) | 3% (Dias) | 6% (Alckmin) | | 17% (Bolsonaro) | – | 10% | 41% |
| IBOPE | 21–24 June 2018 | 2,000 | 33% (Lula) cannot run in election | 4% (Gomes) | – | 7% (Silva) | 0% (Meirelles) | 2% (Dias) | 4% (Alckmin) | | 15% (Bolsonaro) | – | 7% | 28% |
| Ipespe | 18–20 June 2018 | 1,000 | 3% (Haddad) | 10% (Gomes) | – | 14% (Silva) | 2% (Meirelles) | 5% (Dias) | 8% (Alckmin) | | 21% (Bolsonaro) | – | 4% | 33% |
| Ipespe | 18–20 June 2018 | 1,000 | 12% (Haddad, supported by Lula) | 8% (Gomes) | – | 11% (Silva) | 2% (Meirelles) | 5% (Dias) | 8% (Alckmin) | | 19% (Bolsonaro) | – | 4% | 31% |
| Ipespe | 18–20 June 2018 | 1,000 | 28% (Lula) cannot run in election | 5% (Gomes) | – | 10% (Silva) | 1% (Meirelles) | 4% (Dias) | 7% (Alckmin) | | 19% (Bolsonaro) | – | 3% | 23% |
| Ipespe | 18–20 June 2018 | 1,000 | – | 10% (Gomes) | – | 13% (Silva) | 1% (Meirelles) | 5% (Dias) | 8% (Alckmin) | | 22% (Bolsonaro) | – | 4% | 36% |
| Ipespe | 11–13 June 2018 | 1,000 | 2% (Haddad) | 10% (Gomes) | – | 13% (Silva) | 2% (Meirelles) | 6% (Dias) | 8% (Alckmin) | | 22% (Bolsonaro) | – | 4% | 33% |
| Ipespe | 11–13 June 2018 | 1,000 | 11% (Haddad, supported by Lula) | 9% (Gomes) | – | 10% (Silva) | 2% (Meirelles) | 6% (Dias) | 8% (Alckmin) | | 20% (Bolsonaro) | – | 2% | 31% |
| Ipespe | 11–13 June 2018 | 1,000 | 29% (Lula) cannot run in election | 6% (Gomes) | – | 10% (Silva) | 2% (Meirelles) | 6% (Dias) | 7% (Alckmin) | | 19% (Bolsonaro) | – | 2% | 18% |
| Ipespe | 11–13 June 2018 | 1,000 | – | 11% (Gomes) | – | 13% (Silva) | 2% (Meirelles) | 6% (Dias) | 8% (Alckmin) | | 22% (Bolsonaro) | – | 4% | 34% |
| Datafolha | 6–7 June 2018 | 2,824 | 1% (Haddad) | 10% (Gomes) | – | 15% (Silva) | 1% (Meirelles) | 4% (Dias) | 7% (Alckmin) | | 19% (Bolsonaro) | – | 10% | 33% |
| Datafolha | 6–7 June 2018 | 2,824 | 30% (Lula) cannot run in election | 6% (Gomes) | – | 10% (Silva) | 1% (Meirelles) | 4% (Dias) | 6% (Alckmin) | | 17% (Bolsonaro) | – | 5% | 21% |
| Datafolha | 6–7 June 2018 | 2,824 | 1% (Wagner) | 10% (Gomes) | – | 14% (Silva) | 1% (Meirelles) | 4% (Dias) | 7% (Alckmin) | | 19% (Bolsonaro) | – | 10% | 33% |
| Datafolha | 6–7 June 2018 | 2,824 | – | 11% (Gomes) | – | 15% (Silva) | 1% (Meirelles) | 4% (Dias) | 7% (Alckmin) | | 19% (Bolsonaro) | – | 9% | 34% |
| Ipespe | 4–6 June 2018 | 1,000 | 3% (Haddad) | 11% (Gomes) | – | 13% (Silva) | 2% (Meirelles) | 6% (Dias) | 8% (Alckmin) | | 22% (Bolsonaro) | – | 3% | 32% |
| Ipespe | 4–6 June 2018 | 1,000 | 11% (Haddad, supported by Lula) | 9% (Gomes) | – | 11% (Silva) | 2% (Meirelles) | 6% (Dias) | 8% (Alckmin) | | 21% (Bolsonaro) | – | 4% | 27% |
| Ipespe | 4–6 June 2018 | 1,000 | 30% (Lula) cannot run in election | 6% (Gomes) | – | 10% (Silva) | 2% (Meirelles) | 5% (Dias) | 7% (Alckmin) | | 20% (Bolsonaro) | – | 4% | 16% |
| Ipespe | 4–6 June 2018 | 1,000 | – | 11% (Gomes) | – | 13% (Silva) | 1% (Meirelles) | 7% (Dias) | 9% (Alckmin) | | 23% (Bolsonaro) | – | 3% | 32% |
| DataPoder360 | 25–31 May 2018 | 10,500 | 6% (Haddad) | 11% (Gomes) | – | 7% (Silva) | 1% (Meirelles) | 5% (Dias) | 6% (Alckmin) | | 21% (Bolsonaro) | – | 5.8% | 39% |
| DataPoder360 | 25–31 May 2018 | 10,500 | 8% (Haddad) | 12% (Gomes) | – | 6% (Silva) | – | 6% (Dias) | 7% (Alckmin) | | 25% (Bolsonaro) | – | – | 36% |
| DataPoder360 | 25–31 May 2018 | 10,500 | 8% (Haddad) | 12% (Gomes) | – | 7% (Silva) | – | 6% (Dias) | 6% (Doria) | | 22% (Bolsonaro) | – | – | 40% |
| Vox Populi | 19–23 May 2018 | 2,000 | 39% (Lula) cannot run in election | 4% (Gomes) | – | 6% (Silva) | 1% (Meirelles) | 2% (Dias) | 3% (Alckmin) | | 12% (Bolsonaro) | – | 2% | 30% |
| Ipespe | 15–18 and 21–23 May 2018 | 2,000 | 3% (Haddad) | 10% (Gomes) | – | 14% (Silva) | 2% (Meirelles) | 4% (Dias) | 9% (Alckmin) | | 24% (Bolsonaro) | – | 2% | 32% |
| Ipespe | 15–18 and 21–23 May 2018 | 2,000 | 29% (Lula) cannot run in election | 6% (Gomes) | – | 9% (Silva) | 1% (Temer) | 4% (Dias) | 9% (Alckmin) | | 24% (Bolsonaro) | – | 3% | 17% |
| Ipespe | 15–18 and 21–23 May 2018 | 2,000 | – | 10% (Gomes) | – | 13% (Silva) | 1% (Meirelles) | 5% (Dias) | 9% (Alckmin) | | 24% (Bolsonaro) | – | 3% | 36% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | 2.3% (Haddad) | 9.0% (Gomes) | – | 11.2% (Silva) | 0.5% (Meirelles) | 3.0% (Dias) | 5.3% (Alckmin) | | 18.3% (Bolsonaro) | – | 4.4% | 45.7% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | 4.4% (Haddad) | 12.0% (Gomes) | – | 16.4% (Silva) | 1.4% (Meirelles) | – | – | | 20.7% (Bolsonaro) | – | – | 45.1% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | 3.8% (Haddad) | 11.1% (Gomes) | – | 15.1% (Silva) | – | – | 8.1% (Alckmin) | | 19.7% (Bolsonaro) | – | – | 42.2% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | 32.4% (Lula) cannot run in election | 5.4% (Gomes) | – | 7.6% (Silva) | 0.3% (Meirelles) | 2.5% (Dias) | 4.0% (Alckmin) | | 16.7% (Bolsonaro) | – | 3.0% | 26.7% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | 32.4% (Lula) cannot run in election | 5.4% (Gomes) | – | 7.6% (Silva) | 0.9% (Temer) | 2.5% (Dias) | 4.0% (Alckmin) | | 16.7% (Bolsonaro) | – | 3.0% | 26.7% |
| Paraná Pesquisas | 27 April–2 May 2018 | 2,002 | 2.7% (Haddad) | 9.7% (Gomes) | 11.0% (Barbosa) | 12.0% (Silva) | 1.7% (Temer) | 5.9% (Dias) | 8.1% (Alckmin) | | 20.5% (Bolsonaro) | – | 6.0% | 22.2% |
| Paraná Pesquisas | 27 April–2 May 2018 | 2,002 | 27.6% (Lula) cannot run in election | 5.5% (Gomes) | 9.2% (Barbosa) | 7.7% (Silva) | 1.1% (Temer) | 5.4% (Dias) | 6.9% (Alckmin) | | 19.5% (Bolsonaro) | – | 4.2% | 12.8% |
| Paraná Pesquisas | 27 April–2 May 2018 | 2,002 | – | 10.1% (Gomes) | 11.2% (Barbosa) | 13.3% (Silva) | 1.7% (Temer) | 6.1% (Dias) | 8.4% (Alckmin) | | 20.7% (Bolsonaro) | – | 6.4% | 22.0% |
| DataPoder360 | 16–19 April 2018 | 2,000 | 3.9% (Haddad) | 9.0% (Gomes) | 12.9% (Barbosa) | 10.0% (Silva) | – | 6.0% (Dias) | 8.0% (Alckmin) | | 20.0% (Bolsonaro) | – | 5.5% | 24.7% |
| DataPoder360 | 16–19 April 2018 | 2,000 | 7.4% (Haddad) | 8.4% (Gomes) | 16.3% (Barbosa) | 8.2% (Silva) | – | 6.3% (Dias) | 5.5% (Alckmin) | | 22.4% (Bolsonaro) | – | – | 25;5% |
| Vox Populi Archived 2018-04-17 at the Wayback Machine | 13–15 April 2018 | 2,000 | 47% (Lula) cannot run in election | 2% (Gomes) | 9% (Barbosa) | 7% (Silva) | 1% (Meirelles) | 2% (Dias) | 3% (Alckmin) | | 11% (Bolsonaro) | – | 0% | 18% |
| Vox Populi Archived 2018-04-17 at the Wayback Machine | 13–15 April 2018 | 2,000 | 47% (Lula) cannot run in election | 2% (Gomes) | 9% (Barbosa) | 7% (Silva) | 1% (Temer) | 2% (Dias) | 3% (Alckmin) | | 12% (Bolsonaro) | – | 0% | 18% |
| Datafolha | 9–13 April 2018 | 4,260 | 2% (Haddad) | 9% (Gomes) | 9% (Barbosa) | 15% (Silva) | 1% (Meirelles) | 5% (Dias) | 7% (Alckmin) | | 17% (Bolsonaro) | – | 7% | 26% |
| Datafolha | 9–13 April 2018 | 4,260 | 2% (Haddad) | 9% (Gomes) | 9% (Barbosa) | 15% (Silva) | 2% (Temer) | 4% (Dias) | 7% (Alckmin) | | 17% (Bolsonaro) | – | 8% | 28% |
| Datafolha | 9–13 April 2018 | 4,260 | 2% (Haddad) | 9% (Gomes) | 10% (Barbosa) | 15% (Silva) | – | 5% (Dias) | 8% (Alckmin) | | 17% (Bolsonaro) | – | 8% | 27% |
| Datafolha | 9–13 April 2018 | 4,260 | 31% (Lula) cannot run in election | 5% (Gomes) | 8% (Barbosa) | 10% (Silva) | 1% (Meirelles) | 3% (Dias) | 6% (Alckmin) | | 15% (Bolsonaro) | – | 5% | 16% |
| Datafolha | 9–13 April 2018 | 4,260 | 30% (Lula) cannot run in election | 5% (Gomes) | 8% (Barbosa) | 10% (Silva) | 1% (Temer) | 3% (Dias) | 6% (Alckmin) | | 15% (Bolsonaro) | – | 5% | 16% |
| Datafolha | 9–13 April 2018 | 4,260 | 31% (Lula) cannot run in election | 5% (Gomes) | 8% (Barbosa) | 10% (Silva) | – | 4% (Dias) | 6% (Alckmin) | | 16% (Bolsonaro) | – | 4% | 15% |
| Datafolha | 9–13 April 2018 | 4,260 | 1% (Wagner) | 9% (Gomes) | 9% (Barbosa) | 15% (Silva) | 1% (Meirelles) | 4% (Dias) | 8% (Alckmin) | | 17% (Bolsonaro) | – | 9% | 27% |
| Datafolha | 9–13 April 2018 | 4,260 | 1% (Wagner) | 9% (Gomes) | 9% (Barbosa) | 15% (Silva) | 1% (Temer) | 4% (Dias) | 7% (Alckmin) | | 17% (Bolsonaro) | – | 7% | 26% |
| Datafolha | 9–13 April 2018 | 4,260 | – | 9% (Gomes) | 9% (Barbosa) | 16% (Silva) | 1% (Meirelles) | 4% (Dias) | 8% (Alckmin) | | 17% (Bolsonaro) | – | 8% | 26% |
| After Luiz Inácio Lula da Silva is sentenced to 12 years in prison by the Regional Federal Court of the 4th Region, the Supreme Federal Court rules to reject Lula's plea and an arrest warrant is given on 6 April 2018. The ruling of the TRF-4 bars Lula from running in the election |||||||||||||||

##### Jan–Mar

| Polling firm/link | Date(s) administered | Sample size | PT | PDT | PSB | REDE | MDB | PODE | PSDB | PSL | Not affiliated | Others | Abst. Undec. |
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | 2.3% (Haddad) | 8.1% (Gomes) | – | 12.8% (Silva) | 1.3% (Temer) | 4.0% (Dias) | 8.6% (Alckmin) | 20.0% (Bolsonaro) | – | 4.2% | 38.7% |
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | 2.9% (Haddad) | 9.0% (Gomes) | – | 13.9% (Silva) | 1.3% (Temer) | 4.7% (Dias) | – | 20.9% (Bolsonaro) | – | 5.2% | 42.1% |
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | 2.4% (Haddad) | 8.1% (Gomes) | – | 13.4% (Silva) | – | 4.1% (Dias) | 8.7% (Alckmin) | 20.2% (Bolsonaro) | – | 4.6% | 38.5% |
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | 33.4% (Lula) | 4.3% (Gomes) | – | 7.8% (Silva) | 0.9% (Temer) | 3.3% (Dias) | 6.4% (Alckmin) | 16.8% (Bolsonaro) | – | 2.5% | 24.6% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | 2.5% (Haddad) | 9.6% (Gomes) | 5.6% (Barbosa) | 9.7% (Silva) | – | 3.0% (Dias) | 4.4% (Alckmin) | 15.9% (Bolsonaro) | – | 5.3% | 44.5% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | 2.2% (Wagner) | 10.1% (Gomes) | – | 10.4% (Silva) | 0.6% (Meirelles) | 3.4% (Dias) | 1.1% (Virgílio) | 17.0% (Bolsonaro) | – | 5.1% | 50.7% |
| Datafolha | 29–30 January 2018 | 2,826 | 34% (Lula) | 6% (Gomes) | 3% (Barbosa) | 7% (Silva) | 1% (Meirelles) | 3% (Dias) | 6% (Alckmin) | 15% (Bolsonaro) | 5% (Huck) | 3% | 15% |
| Datafolha | 29–30 January 2018 | 2,826 | 34% (Lula) | 6% (Gomes) | 3% (Barbosa) | 7% (Silva) | 1% (Temer) | 3% (Dias) | 6% (Alckmin) | 15% (Bolsonaro) | 5% (Huck) | 3% | 15% |
| Datafolha | 29–30 January 2018 | 2,826 | 34% (Lula) | 6% (Gomes) | – | 8% (Silva) | 1% (Meirelles) | 3% (Dias) | 6% (Alckmin) | 16% (Bolsonaro) | 6% (Huck) | 4% | 16% |
| Datafolha | 29–30 January 2018 | 2,826 | 35% (Lula) | 7% (Gomes) | – | 10% (Silva) | – | 4% (Dias) | 4% (Doria) | 17% (Bolsonaro) | – | 5% | 18% |
| Datafolha | 29–30 January 2018 | 2,826 | 37% (Lula) | 7% (Gomes) | 5% (Barbosa) | – | – | 4% (Dias) | 7% (Alckmin) | 16% (Bolsonaro) | – | 5% | 20% |
| Datafolha | 29–30 January 2018 | 2,826 | 36% (Lula) | 7% (Gomes) | – | – | 1% (Meirelles) | 4% (Dias) | 7% (Alckmin) | 18% (Bolsonaro) | – | 6% | 22% |
| Datafolha | 29–30 January 2018 | 2,826 | 2% (Wagner) | 10% (Gomes) | – | 13% (Silva) | 1% (Meirelles) | 5% (Dias) | 8% (Alckmin) | 18% (Bolsonaro) | 8% (Huck) | 6% | 28% |
| Datafolha | 29–30 January 2018 | 2,826 | 2% (Wagner) | 12% (Gomes) | – | 16% (Silva) | – | 6% (Dias) | 5% (Doria) | 20% (Bolsonaro) | – | 7% | 32% |
| Datafolha | 29–30 January 2018 | 2,826 | 2% (Wagner) | 12% (Gomes) | 5% (Barbosa) | – | – | 6% (Dias) | 11% (Alckmin) | 19% (Bolsonaro) | – | 9% | 35% |
| Datafolha | 29–30 January 2018 | 2,826 | 2% (Wagner) | 13% (Gomes) | – | – | 2% (Meirelles) | 6% (Dias) | 11% (Alckmin) | 20% (Bolsonaro) | – | 9% | 36% |

#### 2017

| Polling firm/link | Date(s) administered | Sample size | PT | PDT | PSB | REDE | MDB | PODE | PSDB | PSL | Not affiliated | Others | Abst. Undec. |
| Paraná Pesquisas | 18–21 December 2017 | 2,020 | 29.2% (Lula) | 5.2% (Gomes) | 6.8% (Barbosa) | 8.6% (Silva) | 0.9% (Meirelles) | 3.5% (Dias) | 7.9% (Alckmin) | 21.1% (Bolsonaro) | – | 0.9% | 15.9% |
| Paraná Pesquisas | 18–21 December 2017 | 2,020 | 13.4% (Rousseff) | 7.7% (Gomes) | 7.6% (Barbosa) | 12.2% (Silva) | 1.1% (Meirelles) | 4.0% (Dias) | 8.7% (Alckmin) | 22.8% (Bolsonaro) | – | 1.1% | 21.4% |
| Paraná Pesquisas | 18–21 December 2017 | 2,020 | 3.9% (Wagner) | 8.2% (Gomes) | 9.6% (Barbosa) | 14.8% (Silva) | 1.3% (Meirelles) | 4.3% (Dias) | 9.5% (Alckmin) | 23.2% (Bolsonaro) | – | 1.5% | 23.7% |
| Vox Populi | 9–12 December 2017 | 2,000 | 43% (Lula) | 2% (Gomes) | 7% (Barbosa) | 5% (Silva) | 1% (Meirelles) | 1% (Dias) | 4% (Alckmin) | 13% (Bolsonaro) | – | 0% | 24% |
| Vox Populi | 9–12 December 2017 | 2,000 | 45% (Lula) | 3% (Gomes) | – | 7% (Silva) | – | – | 6% (Alckmin) | 15% (Bolsonaro) | – | – | 25% |
| DataPoder360 | 8–11 December 2017 | 2,210 | 5% (Haddad) | 10% (Gomes) | – | 10% (Silva) | – | – | 7% (Alckmin) | 23% (Bolsonaro) | – | – | 46% |
| DataPoder360 | 8–11 December 2017 | 2,210 | 26% (Lula) | 5% (Gomes) | – | 7% (Silva) | 1% (Meirelles) | 2% (Dias) | 4% (Alckmin) | 21% (Bolsonaro) | – | 14% | 21% |
| DataPoder360 | 8–11 December 2017 | 2,210 | 30% (Lula) | 6% (Gomes) | – | 10% (Silva) | – | – | 8% (Alckmin) | 22% (Bolsonaro) | – | – | 26% |
| Datafolha | 29–30 November 2017 | 2,765 | 3% (Haddad) | 12% (Gomes) | – | 16% (Silva) | – | 5% (Dias) | 9% (Alckmin) | 21% (Bolsonaro) | – | 5% | 28% |
| Datafolha | 29–30 November 2017 | 2,765 | 3% (Haddad) | 13% (Gomes) | – | 17% (Silva) | – | 6% (Dias) | 6% (Doria) | 21% (Bolsonaro) | – | 5% | 30% |
| Datafolha | 29–30 November 2017 | 2,765 | 3% (Haddad) | 12% (Gomes) | 8% (Barbosa) | – | – | 6% (Dias) | 11% (Alckmin) | 21% (Bolsonaro) | – | 5% | 32% |
| Datafolha | 29–30 November 2017 | 2,765 | 3% (Haddad) | 13% (Gomes) | – | – | 2% (Meirelles) | 6% (Dias) | 12% (Alckmin) | 22% (Bolsonaro) | – | 7% | 35% |
| Datafolha | 29–30 November 2017 | 2,765 | 34% (Lula) | 6% (Gomes) | 5% (Barbosa) | 9% (Silva) | 1% (Temer) | 3% (Dias) | 6% (Alckmin) | 17% (Bolsonaro) | – | 2% | 14% |
| Datafolha | 29–30 November 2017 | 2,765 | 34% (Lula) | 6% (Gomes) | 5% (Barbosa) | 9% (Silva) | 1% (Meirelles) | 3% (Dias) | 6% (Alckmin) | 17% (Bolsonaro) | – | 2% | 14% |
| Datafolha | 29–30 November 2017 | 2,765 | 36% (Lula) | 7% (Gomes) | – | 10% (Silva) | – | 4% (Dias) | 7% (Alckmin) | 18% (Bolsonaro) | – | 3% | 15% |
| Datafolha | 29–30 November 2017 | 2,765 | 36% (Lula) | 7% (Gomes) | – | 11% (Silva) | – | 4% (Dias) | 5% (Doria) | 18% (Bolsonaro) | – | 4% | 16% |
| Datafolha | 29–30 November 2017 | 2,765 | 37% (Lula) | 7% (Gomes) | 6% (Barbosa) | – | – | 4% (Dias) | 8% (Alckmin) | 18% (Bolsonaro) | – | 3% | 17% |
| Datafolha | 29–30 November 2017 | 2,765 | 37% (Lula) | 7% (Gomes) | – | – | 1% (Meirelles) | 4% (Dias) | 9% (Alckmin) | 19% (Bolsonaro) | – | 4% | 17% |
| DataPoder360 | 16–18 November 2017 | 2,171 | 4% (Haddad) | 12% (Gomes) | – | 12% (Silva) | – | – | 9% (Alckmin) | 22% (Bolsonaro) | – | – | 42% |
| DataPoder360 | 16–18 November 2017 | 2,171 | 5% (Haddad) | 14% (Gomes) | – | 14% (Silva) | – | – | 3% (Doria) | 22% (Bolsonaro) | – | – | 43% |
| DataPoder360 | 16–18 November 2017 | 2,171 | 26% (Lula) | 4% (Gomes) | – | 8% (Silva) | – | – | 7% (Alckmin) | 25% (Bolsonaro) | – | – | 29% |
| DataPoder360 | 16–18 November 2017 | 2,171 | 26% (Lula) | 8% (Gomes) | – | 8% (Silva) | – | – | 9% (Doria) | 18% (Bolsonaro) | – | – | 32% |
| Vox Populi | 27–30 October 2017 | 2,000 | 42% (Lula) | 4% (Gomes) | – | 7% (Silva) | 0% (Temer) | 1% (Dias) | 5% (Alckmin) | 16% (Bolsonaro) | – | 1% | 23% |
| Vox Populi | 27–30 October 2017 | 2,000 | 41% (Lula) | 4% (Gomes) | – | 7% (Silva) | – | 1% (Dias) | 5% (Alckmin) | 16% (Bolsonaro) | 2% (Huck) | 2% | 22% |
| Vox Populi | 27–30 October 2017 | 2,000 | 42% (Lula) | 4% (Gomes) | – | 8% (Silva) | – | – | 5% (Alckmin) | 17% (Bolsonaro) | – | – | 24% |
| Vox Populi | 27–30 October 2017 | 2,000 | 43% (Lula) | 5% (Gomes) | – | 8% (Silva) | – | – | 3% (Doria) | 16% (Bolsonaro) | – | – | 24% |
| DataPoder360 | 26–29 October 2017 | 2,016 | 4% (Haddad) | 14% (Gomes) | – | 9% (Silva) | – | – | 10% (Alckmin) | 23% (Bolsonaro) | – | – | 40% |
| DataPoder360 | 26–29 October 2017 | 2,016 | 7% (Haddad) | 11% (Gomes) | – | 13% (Silva) | – | – | 8% (Doria) | 24% (Bolsonaro) | – | – | 37% |
| DataPoder360 | 26–29 October 2017 | 2,016 | 28% (Lula) | 5% (Gomes) | – | 6% (Silva) | – | – | 7% (Alckmin) | 25% (Bolsonaro) | – | – | 29% |
| DataPoder360 | 26–29 October 2017 | 2,016 | 32% (Lula) | 6% (Gomes) | – | 5% (Silva) | – | – | 9% (Doria) | 20% (Bolsonaro) | – | – | 28% |
| IBOPE | 18–22 October 2017 | 2,002 | 1% (Haddad) | 7% (Gomes) | – | 15% (Silva) | 1% (Meirelles) | 3% (Dias) | 7% (Alckmin) | 15% (Bolsonaro) | 8% (Huck) | 3% | 34% |
| IBOPE | 18–22 October 2017 | 2,002 | 1% (Haddad) | 7% (Gomes) | – | 15% (Silva) | 1% (Meirelles) | 3% (Dias) | 5% (Doria) | 15% (Bolsonaro) | 8% (Huck) | 3% | 34% |
| IBOPE | 18–22 October 2017 | 2,002 | 2% (Haddad) | 9% (Gomes) | – | 18% (Silva) | 1% (Meirelles) | 4% (Dias) | 8% (Alckmin) | 18% (Bolsonaro) | – | 4% | 36% |
| IBOPE | 18–22 October 2017 | 2,002 | 2% (Haddad) | 11% (Gomes) | – | 19% (Silva) | 1% (Meirelles) | 4% (Dias) | 6% (Doria) | 17% (Bolsonaro) | – | 3% | 37% |
| IBOPE | 18–22 October 2017 | 2,002 | 35% (Lula) | 3% (Gomes) | – | 8% (Silva) | 0% (Meirelles) | 2% (Dias) | 5% (Alckmin) | 13% (Bolsonaro) | 5% (Huck) | 2% | 23% |
| IBOPE | 18–22 October 2017 | 2,002 | 35% (Lula) | 3% (Gomes) | – | 8% (Silva) | 0% (Meirelles) | 2% (Dias) | 4% (Doria) | 13% (Bolsonaro) | 5% (Huck) | 2% | 23% |
| IBOPE | 18–22 October 2017 | 2,002 | 35% (Lula) | 5% (Gomes) | – | 11% (Silva) | 0% (Meirelles) | 3% (Dias) | 7% (Alckmin) | 15% (Bolsonaro) | – | 3% | 23% |
| IBOPE | 18–22 October 2017 | 2,002 | 36% (Lula) | 5% (Gomes) | – | 11% (Silva) | 1% (Meirelles) | 3% (Dias) | 5% (Doria) | 15% (Bolsonaro) | – | 2% | 22% |
| Datafolha | 27–28 September 2017 | 2,772 | 3% (Haddad) | 9% (Gomes) | – | 22% (Silva) | 2% (Meirelles) | 5% (Dias) | 9% (Alckmin) | 19% (Bolsonaro) | – | 3% | 28% |
| Datafolha | 27–28 September 2017 | 2,772 | 2% (Haddad) | 7% (Gomes) | 5% (Barbosa) | 17% (Silva) | 2% (Meirelles) | 3% (Dias) | 8% (Alckmin) | 15% (Bolsonaro) | 9% (Moro) | 3% | 23% |
| Datafolha | 27–28 September 2017 | 2,772 | 2% (Haddad) | 7% (Gomes) | 5% (Barbosa) | 17% (Silva) | 2% (Meirelles) | 3% (Dias) | 6% (Doria) | 15% (Bolsonaro) | 9% (Moro) | 3% | 23% |
| Datafolha | 27–28 September 2017 | 2,772 | 2% (Haddad) | 9% (Gomes) | – | 20% (Silva) | 2% (Meirelles) | 5% (Dias) | 9% (Alckmin) | 17% (Bolsonaro) | – | 2% | 27% |
| Datafolha | 27–28 September 2017 | 2,772 | 2% (Haddad) | 9% (Gomes) | – | 20% (Silva) | 2% (Meirelles) | 5% (Dias) | 7% (Doria) | 17% (Bolsonaro) | – | 2% | 27% |
| Datafolha | 27–28 September 2017 | 2,772 | 35% (Lula) | 4% (Gomes) | – | 13% (Silva) | 2% (Meirelles) | 4% (Dias) | 8% (Alckmin) | 17% (Bolsonaro) | – | 1% | 17% |
| Datafolha | 27–28 September 2017 | 2,772 | 35% (Lula) | – | – | 13% (Silva) | 2% (Meirelles) | 4% (Dias) | 8% (Alckmin) | 17% (Bolsonaro) | – | 2% | 18% |
| Datafolha | 27–28 September 2017 | 2,772 | 36% (Lula) | – | – | 14% (Silva) | 2% (Meirelles) | 4% (Dias) | 8% (Doria) | 16% (Bolsonaro) | – | 2% | 18% |
| Datafolha | 27–28 September 2017 | 2,772 | – | 10% (Gomes) | – | 22% (Silva) | 2% (Meirelles) | 5% (Dias) | 10% (Alckmin) | 19% (Bolsonaro) | – | 3% | 29% |
| Datafolha | 27–28 September 2017 | 2,772 | – | 10% (Gomes) | – | 23% (Silva) | 2% (Meirelles) | 5% (Dias) | 10% (Doria) | 18% (Bolsonaro) | – | 3% | 29% |
| Paraná Pesquisas | 18–22 September 2017 | 2,040 | 4.0% (Haddad) | 7.5% (Gomes) | 9.7% (Barbosa) | 15.3% (Silva) | 2.2% (Meirelles) | 4.6% (Dias) | 9.7% (Alckmin) | 20.9% (Bolsonaro) | – | – | 26.2% |
| Paraná Pesquisas | 18–22 September 2017 | 2,040 | 3.4% (Haddad) | 7.4% (Gomes) | 8.9% (Barbosa) | 15.4% (Silva) | 2.3% (Meirelles) | 4.4% (Dias) | 13.5% (Doria) | 19.6% (Bolsonaro) | – | – | 25.3% |
| Paraná Pesquisas | 18–22 September 2017 | 2,040 | 26.5% (Lula) | 4.5% (Gomes) | 8.3% (Barbosa) | 9.8% (Silva) | 1.6% (Meirelles) | 3.9% (Dias) | 8.4% (Alckmin) | 20.0% (Bolsonaro) | – | – | 17.0% |
| Paraná Pesquisas | 18–22 September 2017 | 2,040 | 26.6% (Lula) | 4.3% (Gomes) | 7.5% (Barbosa) | 9.7% (Silva) | 1.5% (Meirelles) | 3.8% (Dias) | 11.5% (Doria) | 18.5% (Bolsonaro) | – | – | 16.5% |
| DataPoder360 | 15–17 September 2017 | 2,280 | 4% (Haddad) | 11% (Gomes) | – | 12% (Silva) | – | – | 7% (Alckmin) | 26% (Bolsonaro) | – | – | 41% |
| DataPoder360 | 15–17 September 2017 | 2,280 | 3% (Haddad) | 11% (Gomes) | – | 13% (Silva) | – | – | 8% (Doria) | 26% (Bolsonaro) | – | – | 40% |
| DataPoder360 | 15–17 September 2017 | 2,280 | 27% (Lula) | 6% (Gomes) | – | 6% (Silva) | – | – | 5% (Alckmin) | 24% (Bolsonaro) | – | – | 32% |
| DataPoder360 | 15–17 September 2017 | 2,280 | 28% (Lula) | 6% (Gomes) | – | 7% (Silva) | – | – | 10% (Doria) | 20% (Bolsonaro) | – | – | 28% |
| MDA | 13–16 September 2017 | 2,002 | 32.0% (Lula) | 4.6% (Gomes) | – | 11.4% (Silva) | – | – | 8.7% (Alckmin) | 19.4% (Bolsonaro) | – | – | 23.9% |
| MDA | 13–16 September 2017 | 2,002 | 32.7% (Lula) | 5.2% (Gomes) | – | 12.0% (Silva) | – | – | 9.4% (Doria) | 18.4% (Bolsonaro) | – | – | 22;3% |
| MDA | 13–16 September 2017 | 2,002 | 32.4% (Lula) | 5.3% (Gomes) | – | 12.1% (Silva) | – | – | 3.2% (Neves) | 19.8% (Bolsonaro) | – | – | 27.2% |
| DataPoder360 | 12–14 August 2017 | 2,088 | 3% (Haddad) | 8% (Gomes) | – | 8% (Silva) | – | – | 9% (Alckmin) | 27% (Bolsonaro) | – | – | 45% |
| DataPoder360 | 12–14 August 2017 | 2,088 | 5% (Haddad) | 9% (Gomes) | – | 6% (Silva) | – | – | 12% (Doria) | 25% (Bolsonaro) | – | – | 44% |
| DataPoder360 | 12–14 August 2017 | 2,088 | 32% (Lula) | 4% (Gomes) | – | 3% (Silva) | – | – | 4% (Alckmin) | 25% (Bolsonaro) | – | – | 33% |
| DataPoder360 | 12–14 August 2017 | 2,088 | 31% (Lula) | 6% (Gomes) | – | 3% (Silva) | – | – | 12% (Doria) | 18% (Bolsonaro) | – | – | 30% |
| Vox Populi | 29–31 July 2017 | 1,999 | 47% (Lula) | 3% (Gomes) | – | 6% (Silva) | 1% (Temer) | – | 5% (Alckmin) | 13% (Bolsonaro) | – | 2% | 22% |
| Vox Populi | 29–31 July 2017 | 1,999 | 47% (Lula) | 3% (Gomes) | – | 7% (Silva) | – | – | 6% (Alckmin) | 13% (Bolsonaro) | – | – | 23% |
| Vox Populi | 29–31 July 2017 | 1,999 | 48% (Lula) | 4% (Gomes) | – | 8% (Silva) | – | – | 4% (Doria) | 13% (Bolsonaro) | – | – | 24% |
| Paraná Pesquisas | 24–27 July 2017 | 2,020 | 26.1% (Lula) | 4.5% (Gomes) | 9.8% (Barbosa) | 7.0% (Silva) | – | 4.1% (Dias) | 7.3% (Alckmin) | 20.8% (Bolsonaro) | – | – | 20.5% |
| Paraná Pesquisas | 24–27 July 2017 | 2,020 | 25.8% (Lula) | 4.5% (Gomes) | 8.7% (Barbosa) | 7.1% (Silva) | – | 3.5% (Dias) | 12.3% (Doria) | 18.7% (Bolsonaro) | – | – | 19.6% |
| DataPoder360 | 9–10 July 2017 | 2,178 | 26% (Lula) | 5% (Gomes) | – | 6% (Silva) | – | – | 10% (Alckmin) | 21% (Bolsonaro) | – | – | 34% |
| DataPoder360 | 9–10 July 2017 | 2,178 | 23% (Lula) | 4% (Gomes) | – | 12% (Silva) | – | – | 13% (Doria) | 21% (Bolsonaro) | – | – | 27% |
| Datafolha | 21–23 June 2017 | 2,771 | 3% (Haddad) | – | 13% (Barbosa) | 22% (Silva) | – | – | 10% (Alckmin) | 16% (Bolsonaro) | – | 8% | 28% |
| Datafolha | 21–23 June 2017 | 2,771 | 30% (Lula) | 5% (Gomes) | – | 15% (Silva) | – | – | 8% (Alckmin) | 16% (Bolsonaro) | – | 6% | 20% |
| Datafolha | 21–23 June 2017 | 2,771 | 30% (Lula) | 6% (Gomes) | – | 15% (Silva) | – | – | 10% (Doria) | 15% (Bolsonaro) | – | 6% | 18% |
| Datafolha | 21–23 June 2017 | 2,771 | 30% (Lula) | – | 11% (Barbosa) | 15% (Silva) | – | – | 8% (Alckmin) | 15% (Bolsonaro) | – | 6% | 16% |
| Datafolha | 21–23 June 2017 | 2,771 | 29% (Lula) | – | 10% (Barbosa) | 15% (Silva) | – | – | 9% (Doria) | 13% (Bolsonaro) | – | 5% | 17% |
| Datafolha | 21–23 June 2017 | 2,771 | 29% (Lula) | – | – | 14% (Silva) | – | – | 6% (Alckmin) | 13% (Bolsonaro) | 14% (Moro) | 5% | 17% |
| Datafolha | 21–23 June 2017 | 2,771 | – | 9% (Gomes) | 12% (Barbosa) | 22% (Silva) | – | – | 9% (Alckmin) | 16% (Bolsonaro) | – | 7% | 26% |
| Datafolha | 21–23 June 2017 | 2,771 | – | 12% (Gomes) | – | 27% (Silva) | – | – | 14% (Doria) | 18% (Bolsonaro) | – | – | 29% |
| DataPoder360 | 17–19 June 2017 | 2,096 | 27% (Lula) | 5% (Gomes) | – | 5% (Silva) | – | – | 7% (Alckmin) | 14% (Bolsonaro) | – | – | 43% |
| DataPoder360 | 17–19 June 2017 | 2,096 | 27% (Lula) | 6% (Gomes) | – | 6% (Silva) | – | – | 11% (Doria) | 15% (Bolsonaro) | – | – | 35% |
| Vox Populi | 2–4 June 2017 | 2,000 | 45% (Lula) | 4% (Gomes) | – | 8% (Silva) | – | – | 4% (Alckmin) | 13% (Bolsonaro) | – | – | 25% |
| Vox Populi | 2–4 June 2017 | 2,000 | 45% (Lula) | 5% (Gomes) | – | 9% (Silva) | – | – | 4% (Doria) | 12% (Bolsonaro) | – | – | 25% |
| Vox Populi | 2–4 June 2017 | 2,000 | 46% (Lula) | 5% (Gomes) | – | 9% (Silva) | – | – | 1% (Neves) | 13% (Bolsonaro) | – | – | 26% |
| Paraná Pesquisas | 25–29 May 2017 | 2,022 | 3.1% (Haddad) | 6.7% (Gomes) | 8.7% (Barbosa) | 14.9% (Silva) | – | – | 13.6% (Doria) | 17.2% (Bolsonaro) | – | 7.4% | 28.3% |
| Paraná Pesquisas | 25–29 May 2017 | 2,022 | 25.4% (Lula) | 4.2% (Gomes) | 8.1% (Barbosa) | 10.4% (Silva) | – | – | 6.4% (Alckmin) | 16.8% (Bolsonaro) | 7.3% (Huck) | 2.9% | 18.5% |
| Paraná Pesquisas | 25–29 May 2017 | 2,022 | 25.8% (Lula) | 4.3% (Gomes) | 8.1% (Barbosa) | 11.1% (Silva) | – | – | 12.1% (Doria) | 16.1% (Bolsonaro) | – | 3.1% | 19.4% |
| DataPoder360 | 7–8 May 2017 | 2,157 | 25% (Lula) | 5% (Gomes) | – | 7% (Silva) | – | – | 4% (Alckmin) | 21% (Bolsonaro) | – | – | 38% |
| DataPoder360 | 7–8 May 2017 | 2,157 | 27% (Lula) | 6% (Gomes) | – | 6% (Silva) | – | – | 13% (Doria) | 17% (Bolsonaro) | – | – | 32% |
| Datafolha | 26–27 April 2017 | 2,781 | 30% (Lula) | 6% (Gomes) | – | 16% (Silva) | 2% (Temer) | – | 6% (Alckmin) | 14% (Bolsonaro) | – | 5% | 26% |
| Datafolha | 26–27 April 2017 | 2,781 | 31% (Lula) | 6% (Gomes) | – | 16% (Silva) | 2% (Temer) | – | 9% (Doria) | 13% (Bolsonaro) | – | 4% | 26% |
| Datafolha | 26–27 April 2017 | 2,781 | 30% (Lula) | 5% (Gomes) | – | 14% (Silva) | 2% (Temer) | – | 8% (Neves) | 15% (Bolsonaro) | – | 4% | 21% |
| Datafolha | 26–27 April 2017 | 2,781 | – | 11% (Gomes) | – | 25% (Silva) | – | – | 8% (Alckmin) | 16% (Bolsonaro) | – | 8% | 33% |
| Datafolha | 26–27 April 2017 | 2,781 | – | 12% (Gomes) | – | 25% (Silva) | – | – | 11% (Doria) | 14% (Bolsonaro) | – | 7% | 31% |
| DataPoder360 | 16–17 April 2017 | 2,058 | 24% (Lula) | 5% (Gomes) | – | 11% (Silva) | – | – | 8% (Alckmin) | 18% (Bolsonaro) | – | – | 34% |
| DataPoder360 | 16–17 April 2017 | 2,058 | 25% (Lula) | 5% (Gomes) | – | 9% (Silva) | – | – | 13% (Doria) | 14% (Bolsonaro) | – | – | 33% |
| DataPoder360 | 16–17 April 2017 | 2,058 | 25% (Lula) | 4% (Gomes) | – | 11% (Silva) | – | – | 7% (Neves) | 19% (Bolsonaro) | – | – | 35% |
| Vox Populi | 6–10 April 2017 | 2,000 | 45% (Lula) | 4% (Gomes) | – | 11% (Silva) | – | – | 6% (Alckmin) | 12% (Bolsonaro) | – | – | 23% |
| Vox Populi | 6–10 April 2017 | 2,000 | 45% (Lula) | 5% (Gomes) | – | 11% (Silva) | – | – | 6% (Doria) | 11% (Bolsonaro) | – | – | 23% |
| Vox Populi | 6–10 April 2017 | 2,000 | 44% (Lula) | 4% (Gomes) | – | 10% (Silva) | – | – | 9% (Neves) | 11% (Bolsonaro) | – | – | 22% |
| Paraná Pesquisas | 12–15 February 2017 | 2,020 | 22.9% (Lula) | 4.7% (Gomes) | 11.5% (Barbosa) | 12.8% (Silva) | 3.8% (Temer) | – | 11.9% (Alckmin) | 12.2% (Bolsonaro) | – | 1.9% | 18.1% |
| Paraná Pesquisas | 12–15 February 2017 | 2,020 | 23.3% (Lula) | 5.6% (Gomes) | 11.3% (Barbosa) | 13.7% (Silva) | 4.3% (Temer) | – | 9.1% (Doria) | 11.9% (Bolsonaro) | – | 1.6% | 19.1% |
| Paraná Pesquisas | 12–15 February 2017 | 2,020 | 22.6% (Lula) | 4.9% (Gomes) | 11.7% (Barbosa) | 12.6% (Silva) | 3.8% (Temer) | – | 12.9% (Neves) | 12.0% (Bolsonaro) | – | 2.0% | 17.6% |
| MDA Archived 2019-01-09 at the Wayback Machine | 8–11 February 2017 | 2,002 | 31.8% (Lula) | 5.3% (Gomes) | – | 12.1% (Silva) | – | – | 9.1% (Alckmin) | 11.7% (Bolsonaro) | – | – | 29% |
| MDA Archived 2019-01-09 at the Wayback Machine | 8–11 February 2017 | 2,002 | 30.5% (Lula) | 5% (Gomes) | – | 11.8% (Silva) | 3.7% (Temer) | – | 10.1% (Neves) | 11.3% (Bolsonaro) | – | – | 26.6% |
| MDA Archived 2019-01-09 at the Wayback Machine | 8–11 February 2017 | 2,002 | 32.8% (Lula) | – | – | 13.9% (Silva) | – | – | 12.1% (Neves) | 12% (Bolsonaro) | – | – | 29.2% |

#### 2016

| Polling firm/link | Date(s) administered | Sample size | PT | PDT | PSB | REDE | MDB | PODE | PSDB | PSL | Not affiliated | Others | Abst. Undec. |
| Vox Populi | 10–14 December 2016 | 2,500 | 38% (Lula) | 5% (Gomes) | – | 12% (Silva) | – | – | 10% (Alckmin) | 7% (Bolsonaro) | – | – | 28% |
| Vox Populi | 10–14 December 2016 | 2,500 | 37% (Lula) | 4% (Gomes) | – | 10% (Silva) | – | – | 13% (Neves) | 7% (Bolsonaro) | – | – | 29% |
| Datafolha | 7–8 December 2016 | 2,828 | 26% (Lula) | 6% (Gomes) | – | 17% (Silva) | 4% (Temer) | – | 8% (Alckmin) | 8% (Bolsonaro) | – | 5% | 26% |
| Datafolha | 7–8 December 2016 | 2,828 | 25% (Lula) | 5% (Gomes) | – | 15% (Silva) | 4% (Temer) | – | 11% (Neves) | 9% (Bolsonaro) | – | 5% | 26% |
| Datafolha | 7–8 December 2016 | 2,828 | 25% (Lula) | 6% (Gomes) | – | 16% (Silva) | 4% (Temer) | – | 9% (Serra) | 9% (Bolsonaro) | – | 5% | 26% |
| MDA Archived 2017-03-14 at the Wayback Machine | 13–16 October 2016 | 2,002 | 25.3% (Lula) | 8.4% (Gomes) | – | 14.0% (Silva) | 6.1% (Temer) | – | 13.4% (Alckmin) | 6.9% (Bolsonaro) | – | – | 25.9% |
| MDA Archived 2017-03-14 at the Wayback Machine | 13–16 October 2016 | 2,002 | 24.8% (Lula) | 7.4% (Gomes) | – | 13.3% (Silva) | 6.2% (Temer) | – | 15.7% (Neves) | 6.5% (Bolsonaro) | – | – | 26.1% |
| MDA Archived 2017-03-14 at the Wayback Machine | 13–16 October 2016 | 2,002 | 27.6% (Lula) | – | – | 16.5% (Silva) | – | – | 18.9% (Neves) | 7.9% (Bolsonaro) | – | – | 29.1% |
| Vox Populi | 9–13 October 2016 | 2,000 | 35% (Lula) | 6% (Gomes) | – | 13% (Silva) | – | – | 12% (Alckmin) | 7% (Bolsonaro) | – | – | 28% |
| Vox Populi | 9–13 October 2016 | 2,000 | 34% (Lula) | 5% (Gomes) | – | 11% (Silva) | – | – | 15% (Neves) | 7% (Bolsonaro) | – | – | 27% |
| Vox Populi | 29 July–1 August 2016 | 1,500 | 29% (Lula) | 6% (Gomes) | – | 18% (Silva) | – | – | 11% (Alckmin) | 7% (Bolsonaro) | – | – | 29% |
| Vox Populi | 29 July–1 August 2016 | 1,500 | 28% (Lula) | 6% (Gomes) | – | 15% (Silva) | – | – | 18% (Neves) | 7% (Bolsonaro) | – | – | 27% |
| Vox Populi | 29 July–1 August 2016 | 1,500 | 29% (Lula) | 6% (Gomes) | – | 19% (Silva) | – | – | 13% (Serra) | 7% (Bolsonaro) | – | – | 27% |
| Datafolha | 14–15 July 2016 | 2,792 | 23% (Lula) | 6% (Gomes) | – | 18% (Silva) | 6% (Temer) | – | 8% (Alckmin) | 8% (Bolsonaro) | – | 5% | 27% |
| Datafolha | 14–15 July 2016 | 2,792 | 22% (Lula) | 5% (Gomes) | – | 17% (Silva) | 5% (Temer) | – | 14% (Neves) | 7% (Bolsonaro) | – | 4% | 25% |
| Datafolha | 14–15 July 2016 | 2,792 | 23% (Lula) | 6% (Gomes) | – | 17% (Silva) | 6% (Temer) | – | 11% (Serra) | 7% (Bolsonaro) | – | 5% | 26% |
| Vox Populi | June 2016 | – | 29% (Lula) | 6% (Gomes) | – | 18% (Silva) | – | – | 16% (Neves) | 6% (Bolsonaro) | – | – | 25% |
| MDA | 2–5 June 2016 | 2,002 | 22.3% (Lula) | 6.3% (Gomes) | – | 16.6% (Silva) | 6.2% (Temer) | – | 9.6% (Alckmin) | 6.2% (Bolsonaro) | – | – | 32.8% |
| MDA | 2–5 June 2016 | 2,002 | 22% (Lula) | 6% (Gomes) | – | 14.8% (Silva) | 5.4% (Temer) | – | 15.9% (Neves) | 5.8% (Bolsonaro) | – | – | 30.1% |
| Vox Populi | 9–12 April 2016 | – | 29% (Lula) | 5% (Gomes) | – | 18% (Silva) | – | – | 17% (Neves) | 7% (Bolsonaro) | – | – | 23% |
| Vox Populi | 9–12 April 2016 | – | 31% (Lula) | – | – | 23% (Silva) | – | – | 20% (Neves) | – | – | – | 26% |
| Datafolha | 7–8 April 2016 | 2,779 | 22% (Lula) | 8% (Gomes) | – | 23% (Silva) | 2% (Temer) | – | 9% (Alckmin) | 8% (Bolsonaro) | – | 4% | 24% |
| Datafolha | 7–8 April 2016 | 2,779 | 21% (Lula) | 7% (Gomes) | – | 19% (Silva) | 2% (Temer) | – | 17% (Neves) | 8% (Bolsonaro) | – | 4% | 22% |
| Datafolha | 7–8 April 2016 | 2,779 | 22% (Lula) | 7% (Gomes) | – | 22% (Silva) | 2% (Temer) | – | 11% (Serra) | 7% (Bolsonaro) | – | 4% | 24% |
| Paraná Pesquisas | 3–6 April 2016 | 2,044 | 15.4% (Lula) | 6.7% (Gomes) | – | 24.7% (Silva) | 1.9% (Temer) | 3.2% (Dias) | 18.3% (Alckmin) | 8.3% (Bolsonaro) | – | 2.9% | 18.6% |
| Paraná Pesquisas | 3–6 April 2016 | 2,044 | 15.7% (Lula) | 6.4% (Gomes) | – | 21.0% (Silva) | 1.9% (Temer) | 2.7% (Dias) | 23.5% (Neves) | 8.4% (Bolsonaro) | – | 2.9% | 17.6% |
| Paraná Pesquisas | 3–6 April 2016 | 2,044 | 15.4% (Lula) | 6.9% (Gomes) | – | 24.8% (Silva) | 1.9% (Temer) | 2.9% (Dias) | 18.0% (Serra) | 8.5% (Bolsonaro) | – | 2.9% | 18.7% |
| Datafolha | 17–18 March 2016 | – | 17% (Lula) | 7% (Gomes) | – | 23% (Silva) | 2% (Temer) | – | 11% (Alckmin) | 6% (Bolsonaro) | – | 6% | 27% |
| Datafolha | 17–18 March 2016 | – | 17% (Lula) | 6% (Gomes) | – | 21% (Silva) | 1% (Temer) | – | 19% (Neves) | 6% (Bolsonaro) | – | 7% | 24% |
| Datafolha | 17–18 March 2016 | – | 17% (Lula) | 7% (Gomes) | – | 24% (Silva) | 1% (Temer) | – | 13% (Serra) | 7% (Bolsonaro) | – | 7% | 25% |
| Paraná Pesquisas | 28 February–2 March 2016 | 2,022 | 16.9% (Lula) | 6.5% (Gomes) | – | 22.3% (Silva) | – | 3.1% (Dias) | 16.6% (Alckmin) | 8.7% (Bolsonaro) | – | 6.0% | 19.9% |
| Paraná Pesquisas | 28 February–2 March 2016 | 2,022 | 16.8% (Lula) | 4.7% (Gomes) | – | 18.2% (Silva) | – | 2.7% (Dias) | 27.6% (Neves) | 8.4% (Bolsonaro) | – | 4.9% | 16.7% |
| Datafolha | 24–25 February 2016 | – | 20% (Lula) | 6% (Gomes) | – | 23% (Silva) | 2% (Temer) | – | 12% (Alckmin) | 7% (Bolsonaro) | – | 5% | 25% |
| Datafolha | 24–25 February 2016 | – | 20% (Lula) | 5% (Gomes) | – | 19% (Silva) | 1% (Temer) | – | 24% (Neves) | 6% (Bolsonaro) | – | 4% | 21% |
| Datafolha | 24–25 February 2016 | – | 21% (Lula) | 5% (Gomes) | – | 23% (Silva) | 2% (Temer) | – | 15% (Serra) | 6% (Bolsonaro) | – | 5% | 24% |
| MDA Archived 2017-03-02 at the Wayback Machine | 18–21 February 2016 | 2,002 | 19.7% (Lula) | 7.4% (Gomes) | – | 18.0% (Silva) | – | – | 13.8% (Alckmin) | 6.3% (Bolsonaro) | – | – | 34.8% |
| MDA Archived 2017-03-02 at the Wayback Machine | 18–21 February 2016 | 2,002 | 19.1% (Lula) | 5.8% (Gomes) | – | 14.7% (Silva) | – | – | 24.6% (Neves) | 6.1% (Bolsonaro) | – | – | 29.7% |
| MDA Archived 2017-03-02 at the Wayback Machine | 18–21 February 2016 | 2,002 | 19.7% (Lula) | 7.2% (Gomes) | – | 17.8% (Silva) | – | – | 14.5% (Serra) | 6.4% (Bolsonaro) | – | – | 34.4% |

#### 2015

| Polling firm/link | Date(s) administered | Sample size | PT | PDT | PSB | REDE | MDB | PODE | PSDB | PSL | Not affiliated | Others | Abst. Undec. |
| Datafolha | 16–17 December 2015 | – | 22% (Lula) | 7% (Gomes) | – | 24% (Silva) | 1% (Temer) | – | 14% (Alckmin) | 5% (Bolsonaro) | – | 4% | 23% |
| Datafolha | 16–17 December 2015 | – | 20% (Lula) | 6% (Gomes) | – | 19% (Silva) | 2% (Temer) | – | 27% (Neves) | 4% (Bolsonaro) | – | 3% | 19% |
| Datafolha | 25–26 November 2015 | 3,541 | 22% (Lula) | – | – | 28% (Silva) | – | – | 18% (Alckmin) | – | – | 8% | 23% |
| Datafolha | 25–26 November 2015 | 3,541 | 22% (Lula) | – | – | 21% (Silva) | – | – | 31% (Neves) | – | – | 7% | 19% |
| Datafolha | 25–26 November 2015 | 3,541 | 22% (Lula) | – | – | 28% (Silva) | 2% (Temer) | – | 18% (Alckmin) | – | – | 7% | 24% |
| Datafolha | 25–26 November 2015 | 3,541 | 22% (Lula) | – | – | 21% (Silva) | 2% (Temer) | – | 31% (Neves) | – | – | 5% | 19% |
| Paraná Pesquisas | 28 October–2 November 2015 | 2,085 | 18.2% (Lula) | 6.1% (Gomes) | – | 24.3% (Silva) | 1.6% (Temer) | – | 22.6% (Alckmin) | 5.7% (Bolsonaro) | – | 1.4% | 20.1% |
| Paraná Pesquisas | 28 October–2 November 2015 | 2,085 | 17.1% (Lula) | 5.2% (Gomes) | – | 19.7% (Silva) | 1.5% (Temer) | – | 34.2% (Neves) | 5.3% (Bolsonaro) | – | 1.0% | 16.0% |
| Paraná Pesquisas | 28 October–2 November 2015 | 2,085 | 17.7% (Lula) | 6.0% (Gomes) | – | 23.8% (Silva) | 2.0% (Temer) | – | 25.5% (Serra) | 5.8% (Bolsonaro) | – | 1.4% | 17.8% |
| MDA Archived 2017-04-24 at the Wayback Machine | 20–24 October 2015 | 2,002 | 23.1% (Lula) | – | – | 27.8% (Silva) | – | – | 19.9% (Alckmin) | – | – | – | 29.2% |
| MDA Archived 2017-04-24 at the Wayback Machine | 20–24 October 2015 | 2,002 | 21.6% (Lula) | – | – | 21.3% (Silva) | – | – | 32.0% (Neves) | – | – | – | 25.1% |
| MDA Archived 2017-04-24 at the Wayback Machine | 20–24 October 2015 | 2,002 | 23.5% (Lula) | – | – | 27.9% (Silva) | – | – | 19.6% (Serra) | – | – | – | 29.0% |
| MDA Archived 2017-04-25 at the Wayback Machine | 12–16 July 2015 | 2,002 | 24.9% (Lula) | – | – | 23.1% (Silva) | – | – | 21.5% (Alckmin) | 5.1% (Bolsonaro) | – | – | 25.4% |
| MDA Archived 2017-04-25 at the Wayback Machine | 12–16 July 2015 | 2,002 | 22.8% (Lula) | – | – | 15.6% (Silva) | – | – | 35.1% (Neves) | 4.6% (Bolsonaro) | – | – | 21.9% |
| MDA Archived 2017-04-25 at the Wayback Machine | 12–16 July 2015 | 2,002 | 25.0% (Lula) | – | – | 23.3% (Silva) | – | – | 21.2% (Serra) | 5.5% (Bolsonaro) | – | – | 25.0% |
| Datafolha | 17–18 June 2015 | 2,840 | 26% (Lula) | – | – | 25% (Silva) | – | – | 20% (Alckmin) | – | – | 8% | 21% |
| Datafolha | 17–18 June 2015 | 2,840 | 25% (Lula) | – | – | 18% (Silva) | – | – | 35% (Neves) | – | – | 6% | 16% |
| Datafolha | 9–10 April 2015 | 2,834 | 29% (Lula) | – | 13% (Barbosa) | 14% (Silva) | – | – | 33% (Neves) | – | – | 3% | 9% |
| Paraná Pesquisas | 26–31 March 2015 | 2,022 | 17.9% (Lula) | – | – | 24.3% (Silva) | – | – | 37.1% (Neves) | – | – | – | 20.6% |
| Paraná Pesquisas | 26–31 March 2015 | 2,022 | 16.4% (Rousseff) | – | – | 27.6% (Silva) | – | – | 39.2% (Neves) | – | – | – | 16.8% |
| 2014 election | 5 October 2014 | 115,122,611 | 41.6% (Rousseff) | – | 21.3% (Silva) | – | – | – | 33.6% (Neves) | – | – | 24.8% | 19.4% |
* 1.Blank or null votes counted apart

### Second round
#### Graphical summary
##### After the first round

| Polling firm/link | Date(s) administered | Sample size | Haddad | Bolsonaro | Abst. Undec. |
| Results of the second round | – | – | 44,87% | 55,13% | – |
| Datafolha | 26–27 October 2018 | 18,731 | 39% | 47% | 13% |
| Ibope | 26–27 October 2018 | 3,010 | 41% | 47% | 12% |
| CNT/MDA | 26–27 October 2018 | 2,002 | 37% | 49% | 14% |
| Datafolha | 24–25 October 2018 | 9,173 | 38% | 48% | 14% |
| Paraná Pesquisas | 23–25 October 2018 | 2,120 | 35% | 53% | 12% |
| RealTime Big Data | 24 October 2018 | 5,000 | 38% | 49% | 13% |
| Ipespe | 23–24 October 2018 | 2,000 | 37% | 51% | 12% |
| Ibope | 21–23 October 2018 | 3,010 | 37% | 50% | 13% |
| FSB Pesquisa | 20–21 October 2018 | 2,000 | 35% | 52% | 13% |
| CNT/MDA | 20–21 October 2018 | 2,002 | 37% | 49% | 14% |
| RealTime Big Data | 19–20 October 2018 | 5,000 | 37% | 52% | 11% |
| DataPoder360 | 17–18 October 2018 | 4,000 | 31% | 57% | 12% |
| Datafolha | 17–18 October 2018 | 9,137 | 35% | 50% | 15% |
| RealTime Big Data | 16–17 October 2018 | 5,000 | 35% | 52% | 13% |
| Ipespe | 15–17 October 2018 | 2,000 | 37% | 51% | 13% |
| Paraná Pesquisas | 14–17 October 2018 | 2,080 | 34% | 53% | 13% |
| Ibope | 13–14 October 2018 | 2,506 | 37% | 52% | 12% |
| FSB Pesquisa | 13–14 October 2018 | 2,000 | 35% | 51% | 14% |
| RealTime Big Data | 12–13 October 2018 | 5,000 | 33% | 48% | 19% |
| Datafolha | 10 October 2018 | 3,235 | 36% | 49% | 15% |
| Idea Big Data | 8–10 October 2018 | 2,036 | 41% | 48% | 11% |
| Ipespe | 8–9 October 2018 | 2,000 | 36% | 51% | 13% |

##### Before the first round

| Polling firm/link | Date(s) administered | Sample Size | PT | PDT | PSB | REDE | MDB | PODE | PSDB | PSL | Not affiliated | Abst. Undec. |
| Ibope | 5–6 October 2018 | 3,010 | 41% (Haddad) | – | – | – | – | – | – | 45% (Bolsonaro) | – | 15% |
| Ibope | 5–6 October 2018 | 3,010 | – | 45% (Gomes) | – | – | – | – | – | 41% (Bolsonaro) | – | 13% |
| Ibope | 5–6 October 2018 | 3,010 | – | – | – | 36% (Silva) | – | – | – | 46% (Bolsonaro) | – | 18% |
| Ibope | 5–6 October 2018 | 3,010 | – | – | – | – | – | – | 40% (Alckmin) | 43% (Bolsonaro) | – | 17% |
| Datafolha | 5–6 October 2018 | 19,552 | 38% (Haddad) | – | – | – | – | – | 41% (Alckmin) | – | – | 20% |
| Datafolha | 5–6 October 2018 | 19,552 | 43% (Haddad) | – | – | – | – | – | – | 45% (Bolsonaro) | – | 12% |
| Datafolha | 5–6 October 2018 | 19,552 | – | 47% (Gomes) | – | – | – | – | – | 43% (Bolsonaro) | – | 10% |
| Datafolha | 5–6 October 2018 | 19,552 | – | – | – | – | – | – | 41% (Alckmin) | 43% (Bolsonaro) | – | 15% |
| CNT/MDA Archived 2018-10-06 at the Wayback Machine | 4–5 October 2018 | 2,002 | 31.1% (Haddad) | 40.9% (Gomes) | – | – | – | – | – | – | – | 28.0% |
| CNT/MDA Archived 2018-10-06 at the Wayback Machine | 4–5 October 2018 | 2,002 | 37.0% (Haddad) | – | – | – | – | – | 34.3% (Alckmin) | – | – | 31.7% |
| CNT/MDA Archived 2018-10-06 at the Wayback Machine | 4–5 October 2018 | 2,002 | 38.7% (Haddad) | – | – | – | – | – | – | 45.2% (Bolsonaro) | – | 16.1% |
| CNT/MDA Archived 2018-10-06 at the Wayback Machine | 4–5 October 2018 | 2,002 | – | 46.1% (Gomes) | – | – | – | – | 24.4% (Alckmin) | – | – | 29.5% |
| CNT/MDA Archived 2018-10-06 at the Wayback Machine | 4–5 October 2018 | 2,002 | – | 41.2% (Gomes) | – | – | – | – | – | 41.9% (Bolsonaro) | – | 16.9% |
| CNT/MDA Archived 2018-10-06 at the Wayback Machine | 4–5 October 2018 | 2,002 | – | – | – | – | – | – | 33.5% (Alckmin) | 43.3% (Bolsonaro) | – | 23.2% |
| XP/Ipespe | 3–4 October 2018 | 2,000 | 36% (Haddad) | – | – | – | – | – | 40% (Alckmin) | – | – | 24% |
| XP/Ipespe | 3–4 October 2018 | 2,000 | 42% (Haddad) | – | – | – | – | – | – | 43% (Bolsonaro) | – | 15% |
| XP/Ipespe | 3–4 October 2018 | 2,000 | – | 36% (Gomes) | – | – | – | – | 33% (Alckmin) | – | – | 31% |
| XP/Ipespe | 3–4 October 2018 | 2,000 | – | 44% (Gomes) | – | – | – | – | – | 39% (Bolsonaro) | – | 18% |
| XP/Ipespe | 3–4 October 2018 | 2,000 | – | – | – | – | – | – | 44% (Alckmin) | 42% (Bolsonaro) | – | 15% |
| RealTime Big Data | 3–4 October 2018 | 10,000 | 40% (Haddad) | – | – | – | – | – | – | 43% (Bolsonaro) | – | 17% |
| RealTime Big Data | 3–4 October 2018 | 10,000 | – | 48% (Gomes) | – | – | – | – | – | 38% (Bolsonaro) | – | 14% |
| RealTime Big Data | 3–4 October 2018 | 10,000 | – | – | – | 37% (Silva) | – | – | – | 40% (Bolsonaro) | – | 23% |
| RealTime Big Data | 3–4 October 2018 | 10,000 | – | – | – | – | – | – | 41% (Alckmin) | 42% (Bolsonaro) | – | 17% |
| DataPoder360 | 3–4 October 2018 | 4,000 | 28% (Haddad) | 41% (Gomes) | – | – | – | – | – | – | – | 30% |
| DataPoder360 | 3–4 October 2018 | 4,000 | 42% (Haddad) | – | – | – | – | – | – | 45% (Bolsonaro) | – | 13% |
| DataPoder360 | 3–4 October 2018 | 4,000 | – | 46% (Gomes) | – | – | – | – | – | 41% (Bolsonaro) | – | 13% |
| DataPoder360 | 3–4 October 2018 | 4,000 | – | – | – | – | – | – | 42% (Alckmin) | 42% (Bolsonaro) | – | 16% |
| Datafolha | 3–4 October 2018 | 10,930 | 38% (Haddad) | – | – | – | – | – | 42% (Alckmin) | – | – | 20% |
| Datafolha | 3–4 October 2018 | 10,930 | 43% (Haddad) | | – | – | – | – | – | 44% (Bolsonaro) | – | 12% |
| Datafolha | 3–4 October 2018 | 10,930 | – | 48% (Gomes) | – | | – | – | – | 42% (Bolsonaro) | – | 11% |
| Datafolha | 3–4 October 2018 | 10,930 | – | – | – | – | – | – | 43% (Alckmin) | 42% (Bolsonaro) | – | 15% |
| Paraná Pesquisas | 2–4 October 2018 | 2,080 | 31.8% (Haddad) | 40.7% (Gomes) | – | – | – | – | – | – | – | 27.5% |
| Paraná Pesquisas | 2–4 October 2018 | 2,080 | 35.2% (Haddad) | – | – | – | – | – | 37.5% (Alckmin) | – | – | 27.2% |
| Paraná Pesquisas | 2–4 October 2018 | 2,080 | 38.1% (Haddad) | – | – | – | – | – | – | 47.1% (Bolsonaro) | – | 14.8% |
| Paraná Pesquisas | 2–4 October 2018 | 2,080 | – | 42.5% (Gomes) | – | – | – | – | – | 44.2% (Bolsonaro) | – | 13.3% |
| Paraná Pesquisas | 2–4 October 2018 | 2,080 | – | – | – | – | – | – | 35.9% (Alckmin) | 44.5% (Bolsonaro) | – | 19.5% |
| Movimento Parlamentarista Brasileiro | 28 September –3 October 2018 | 2,500 | 41% (Haddad) | – | – | – | – | – | – | 37% (Bolsonaro) | – | 22% |
| Movimento Parlamentarista Brasileiro | 28 September –3 October 2018 | 2,500 | – | 41% (Gomes) | – | – | – | – | – | 35% (Bolsonaro) | – | 24% |
| Movimento Parlamentarista Brasileiro | 28 September –3 October 2018 | 2,500 | – | – | – | 35% (Silva) | – | – | – | 37% (Bolsonaro) | – | 28% |
| Movimento Parlamentarista Brasileiro | 28 September –3 October 2018 | 2,500 | – | – | – | – | – | – | 36% (Alckmin) | 36% (Bolsonaro) | – | 28% |
| Datafolha | 2 October 2018 | 3,240 | 32% (Haddad) | 46% (Gomes) | – | – | – | – | – | – | – | 22% |
| Datafolha | 2 October 2018 | 3,240 | 36% (Haddad) | – | – | – | – | – | 43% (Alckmin) | – | – | 21% |
| Datafolha | 2 October 2018 | 3,240 | 42% (Haddad) | – | – | – | – | – | – | 44% (Bolsonaro) | – | 14% |
| Datafolha | 2 October 2018 | 3,240 | – | 42% (Gomes) | – | – | – | – | 37% (Alckmin) | – | – | 21% |
| Datafolha | 2 October 2018 | 3,240 | – | 46% (Gomes) | – | – | – | – | – | 42% (Bolsonaro) | – | 12% |
| Datafolha | 2 October 2018 | 3,240 | – | – | – | – | – | – | 43% (Alckmin) | 41% (Bolsonaro) | – | 16% |
| Ibope | 1–2 October 2018 | 3,010 | 43% (Haddad) | – | – | – | – | – | – | 41% (Bolsonaro) | – | 15% |
| Ibope | 1–2 October 2018 | 3,010 | – | 46% (Gomes) | – | – | – | – | – | 39% (Bolsonaro) | – | 16% |
| Ibope | 1–2 October 2018 | 3,010 | – | – | – | 39% (Silva) | – | – | – | 43% (Bolsonaro) | – | 18% |
| Ibope | 1–2 October 2018 | 3,010 | – | – | – | – | – | – | 41% (Alckmin) | 40% (Bolsonaro) | – | 19% |
| FSB Pesquisa | 29–30 September 2018 | 2,000 | 42% (Haddad) | – | – | – | – | – | – | 43% (Bolsonaro) | – | 15% |
| FSB Pesquisa | 29–30 September 2018 | 2,000 | – | 45% (Gomes) | – | – | – | – | – | 41% (Bolsonaro) | – | 14% |
| FSB Pesquisa | 29–30 September 2018 | 2,000 | – | – | – | 39% (Silva) | – | – | – | 44% (Bolsonaro) | – | 18% |
| FSB Pesquisa | 29–30 September 2018 | 2,000 | – | – | – | – | – | – | 42% (Alckmin) | 41% (Bolsonaro) | – | 17% |
| Ibope | 29–30 September 2018 | 3,010 | 42% (Haddad) | – | – | – | – | – | – | 42% (Bolsonaro) | – | 17% |
| Ibope | 29–30 September 2018 | 3,010 | – | 45% (Gomes) | – | – | – | – | – | 39% (Bolsonaro) | – | 16% |
| Ibope | 29–30 September 2018 | 3,010 | – | – | – | 38% (Silva) | – | – | – | 43% (Bolsonaro) | – | 19% |
| Ibope | 29–30 September 2018 | 3,010 | – | – | – | – | – | – | 42% (Alckmin) | 39% (Bolsonaro) | – | 20% |
| RealTime Big Data | 28–29 September 2018 | 3,200 | 31% (Haddad) | 40% (Gomes) | – | – | – | – | – | – | – | 29% |
| RealTime Big Data | 28–29 September 2018 | 3,200 | 35% (Haddad) | – | – | 28% (Silva) | – | – | – | – | – | 37% |
| RealTime Big Data | 28–29 September 2018 | 3,200 | 37% (Haddad) | – | – | – | – | – | 35% (Alckmin) | – | – | 28% |
| RealTime Big Data | 28–29 September 2018 | 3,200 | 45% (Haddad) | – | – | – | – | – | – | 41% (Bolsonaro) | – | 14% |
| RealTime Big Data | 28–29 September 2018 | 3,200 | – | 40% (Gomes) | – | 23% (Silva) | – | – | – | – | – | 37% |
| RealTime Big Data | 28–29 September 2018 | 3,200 | – | 47% (Gomes) | – | – | – | – | – | 39% (Bolsonaro) | – | 14% |
| RealTime Big Data | 28–29 September 2018 | 3,200 | – | – | – | 28% (Silva) | – | – | 29% (Alckmin) | – | – | 43% |
| RealTime Big Data | 28–29 September 2018 | 3,200 | – | – | – | 36% (Silva) | – | – | – | 37% (Bolsonaro) | – | 27% |
| RealTime Big Data | 28–29 September 2018 | 3,200 | – | – | – | – | – | – | 39% (Alckmin) | 40% (Bolsonaro) | – | 21% |
| CNT/MDA Archived 2018-09-30 at the Wayback Machine | 27–28 September 2018 | 2,000 | 33.9% (Haddad) | 34.0% (Gomes) | – | – | – | – | – | – | – | 32.1% |
| CNT/MDA Archived 2018-09-30 at the Wayback Machine | 27–28 September 2018 | 2,000 | 39.8% (Haddad) | – | – | – | – | – | 28.5% (Alckmin) | – | – | 31.7% |
| CNT/MDA Archived 2018-09-30 at the Wayback Machine | 27–28 September 2018 | 2,000 | 42.7% (Haddad) | – | – | – | – | – | – | 37.3% (Bolsonaro) | – | 20.0% |
| CNT/MDA Archived 2018-09-30 at the Wayback Machine | 27–28 September 2018 | 2,000 | – | 41.5% (Gomes) | – | – | – | – | 23.8% (Alckmin) | – | – | 34.7% |
| CNT/MDA Archived 2018-09-30 at the Wayback Machine | 27–28 September 2018 | 2,000 | – | 42.7% (Gomes) | – | – | – | – | – | 35.3% (Bolsonaro) | – | 22.0% |
| CNT/MDA Archived 2018-09-30 at the Wayback Machine | 27–28 September 2018 | 2,000 | – | – | – | – | – | – | 37.0% (Alckmin) | 33.6% (Bolsonaro) | – | 29.4% |
| Datafolha | 26–28 September 2018 | 9,000 | 35% (Haddad) | 41% (Gomes) | – | – | – | – | – | – | – | 24% |
| Datafolha | 26–28 September 2018 | 9,000 | 39% (Haddad) | – | – | – | – | – | 39% (Alckmin) | – | – | 22% |
| Datafolha | 26–28 September 2018 | 9,000 | 45% (Haddad) | – | – | – | – | – | – | 39% (Bolsonaro) | – | 15% |
| Datafolha | 26–28 September 2018 | 9,000 | – | 42% (Gomes) | – | – | – | – | 36% (Alckmin) | – | – | 22% |
| Datafolha | 26–28 September 2018 | 9,000 | – | 48% (Gomes) | – | – | – | – | – | 38% (Bolsonaro) | – | 14% |
| Datafolha | 26–28 September 2018 | 9,000 | – | – | – | – | – | – | 45% (Alckmin) | 38% (Bolsonaro) | – | 18% |
| Genial Investimentos | 25–26 September 2018 | 1,000 | 44% (Haddad) | – | – | – | – | – | – | 36% (Bolsonaro) | – | 19% |
| XP/Ipespe | 24–26 de setembro de 2018 | 2,000 | 35% (Haddad) | – | – | – | – | – | 38% (Alckmin) | – | – | 27% |
| XP/Ipespe | 24–26 de setembro de 2018 | 2,000 | 43% (Haddad) | – | – | – | – | – | – | 39% (Bolsonaro) | – | 18% |
| XP/Ipespe | 24–26 de setembro de 2018 | 2,000 | – | 39% (Gomes) | – | – | – | – | 35% (Alckmin) | – | – | 26% |
| XP/Ipespe | 24–26 de setembro de 2018 | 2,000 | – | 43% (Gomes) | – | – | – | – | – | 35% (Bolsonaro) | – | 21% |
| XP/Ipespe | 24–26 de setembro de 2018 | 2,000 | – | – | – | 35% (Silva) | – | – | – | 39% (Bolsonaro) | – | 25% |
| XP/Ipespe | 24–26 de setembro de 2018 | 2,000 | – | – | – | – | – | – | 41% (Alckmin) | 38% (Bolsonaro) | – | 22% |
| Paraná Pesquisas | 23–25 September 2018 | 2,020 | 32.4% (Haddad) | 38.2% (Gomes) | – | – | – | – | – | – | – | 29.5% |
| Paraná Pesquisas | 23–25 September 2018 | 2,020 | 36.3% (Haddad) | – | – | – | – | – | 35.8% (Alckmin) | – | – | 27.9% |
| Paraná Pesquisas | 23–25 September 2018 | 2,020 | 39.4% (Haddad) | – | – | – | – | – | – | 44.3% (Bolsonaro) | – | 16.4% |
| Paraná Pesquisas | 23–25 September 2018 | 2,020 | – | 43.2% (Gomes) | – | – | – | – | – | 41.6% (Bolsonaro) | – | 15.2% |
| Paraná Pesquisas | 23–25 September 2018 | 2,020 | – | – | – | – | – | – | 38.2% (Alckmin) | 42.1% (Bolsonaro) | – | 19.7% |
| Ibope | 22–24 September 2018 | 2,000 | 42% (Haddad) | – | – | – | – | – | – | 38% (Bolsonaro) | – | 20% |
| Ibope | 22–24 September 2018 | 2,000 | – | 44% (Gomes) | – | – | – | – | – | 35% (Bolsonaro) | – | 20% |
| Ibope | 22–24 September 2018 | 2,000 | – | – | – | 38% (Silva) | – | – | – | 40% (Bolsonaro) | – | 22% |
| Ibope | 22–24 September 2018 | 2,000 | – | – | – | – | – | – | 40% (Alckmin) | 36% (Bolsonaro) | – | 23% |
| Sensus | 21–24 September 2018 | 2,000 | 29.8% (Haddad) | 25.6% (Gomes) | – | – | – | – | – | – | – | 44.5% |
| Sensus | 21–24 September 2018 | 2,000 | 37.3% (Haddad) | – | – | 17.5% (Silva) | – | – | – | – | – | 45.1% |
| Sensus | 21–24 September 2018 | 2,000 | 35.1% (Haddad) | – | – | – | – | – | 22.3% (Alckmin) | – | – | 42.5% |
| Sensus | 21–24 September 2018 | 2,000 | 36.3% (Haddad) | – | – | – | – | – | – | 37.2% (Bolsonaro) | – | 26.6% |
| Sensus | 21–24 September 2018 | 2,000 | – | 33.5% (Gomes) | – | – | – | – | – | 35.1% (Bolsonaro) | – | 31.3% |
| Sensus | 21–24 September 2018 | 2,000 | – | – | – | 26.5% (Silva) | – | – | – | 37.4% (Bolsonaro) | – | 36.1% |
| Sensus | 21–24 September 2018 | 2,000 | – | – | – | – | – | – | 26.4% (Alckmin) | 38.0% (Bolsonaro) | – | 35.6% |
| Ibope | 22–23 September 2018 | 2,506 | 43% (Haddad) | – | – | – | – | – | – | 37% (Bolsonaro) | – | 19% |
| Ibope | 22–23 September 2018 | 2,506 | – | 46% (Gomes) | – | – | – | – | – | 35% (Bolsonaro) | – | 19% |
| Ibope | 22–23 September 2018 | 2,506 | – | – | – | 39% (Silva) | – | – | – | 39% (Bolsonaro) | – | 23% |
| Ibope | 22–23 September 2018 | 2,506 | – | – | – | – | – | – | 41% (Alckmin) | 36% (Bolsonaro) | – | 24% |
| FSB Pesquisa | 22–23 de setembro de 2018 | 2,000 | 40% (Haddad) | – | – | – | – | – | – | 44% (Bolsonaro) | – | 15% |
| FSB Pesquisa | 22–23 de setembro de 2018 | 2,000 | – | 43% (Gomes) | – | – | – | – | – | 41% (Bolsonaro) | – | 16% |
| FSB Pesquisa | 22–23 de setembro de 2018 | 2,000 | – | – | – | 34% (Silva) | – | – | – | 46% (Bolsonaro) | – | 20% |
| FSB Pesquisa | 22–23 de setembro de 2018 | 2,000 | – | – | – | – | – | – | 40% (Alckmin) | 41% (Bolsonaro) | – | 18% |
| DataPoder360 | 19–20 September 2018 | 4,000 | 43% (Haddad) | – | – | – | – | – | – | 40% (Bolsonaro) | – | 17% |
| DataPoder360 | 19–20 September 2018 | 4,000 | – | 42% (Gomes) | – | – | – | – | – | 36% (Bolsonaro) | – | 22% |
| DataPoder360 | 19–20 September 2018 | 4,000 | – | – | – | 37% (Silva) | – | – | – | 39% (Bolsonaro) | – | 24% |
| DataPoder360 | 19–20 September 2018 | 4,000 | – | – | – | – | – | – | 36% (Alckmin) | 37% (Bolsonaro) | – | 27% |
| Datafolha | 18–19 September 2018 | 8,601 | 31% (Haddad) | 42% (Gomes) | – | – | – | – | – | – | – | 28% |
| Datafolha | 18–19 September 2018 | 8,601 | 37% (Haddad) | – | – | 37% (Silva) | – | – | – | – | – | 26% |
| Datafolha | 18–19 September 2018 | 8,601 | 35% (Haddad) | – | – | – | – | – | 39% (Alckmin) | – | – | 27% |
| Datafolha | 18–19 September 2018 | 8,601 | 41% (Haddad) | – | – | – | – | – | – | 41% (Bolsonaro) | – | 17% |
| Datafolha | 18–19 September 2018 | 8,601 | – | 45% (Gomes) | – | 31% (Silva) | – | – | – | – | – | 24% |
| Datafolha | 18–19 September 2018 | 8,601 | – | 41% (Gomes) | – | – | – | – | 34% (Alckmin) | – | – | 24% |
| Datafolha | 18–19 September 2018 | 8,601 | – | 45% (Gomes) | – | – | – | – | – | 39% (Bolsonaro) | – | 16% |
| Datafolha | 18–19 September 2018 | 8,601 | – | – | – | 36% (Silva) | – | – | 39% (Alckmin) | – | – | 25% |
| Datafolha | 18–19 September 2018 | 8,601 | – | – | – | 41% (Silva) | – | – | – | 42% (Bolsonaro) | – | 18% |
| Datafolha | 18–19 September 2018 | 8,601 | – | – | – | – | – | – | 40% (Alckmin) | 39% (Bolsonaro) | – | 21% |
| Genial Investimentos | 17–19 September 2018 | 1,000 | 33% (Haddad) | 32% (Gomes) | – | – | – | – | – | – | – | 35% |
| Genial Investimentos | 17–19 September 2018 | 1,000 | 34% (Haddad) | – | – | – | – | – | 36% (Alckmin) | – | – | 31% |
| Genial Investimentos | 17–19 September 2018 | 1,000 | 40% (Haddad) | – | – | – | – | – | – | 42% (Bolsonaro) | – | 18% |
| Genial Investimentos | 17–19 September 2018 | 1,000 | – | 34% (Gomes) | – | – | – | – | 32% (Alckmin) | – | – | 34% |
| Genial Investimentos | 17–19 September 2018 | 1,000 | – | 38% (Gomes) | – | – | – | – | – | 40% (Bolsonaro) | – | 22% |
| Genial Investimentos | 17–19 September 2018 | 1,000 | – | – | – | – | – | – | 35% (Alckmin) | 38% (Bolsonaro) | – | 27% |
| XP/Ipespe | 17–19 September 201 | 2,000 | 31% (Haddad) | – | – | – | – | – | 38% (Alckmin) | – | – | 31% |
| XP/Ipespe | 17–19 September 201 | 2,000 | 38% (Haddad) | – | – | – | – | – | – | 41% (Bolsonaro) | – | 21% |
| XP/Ipespe | 17–19 September 201 | 2,000 | – | 37% (Gomes) | – | – | – | – | 35% (Alckmin) | – | – | 29% |
| XP/Ipespe | 17–19 September 201 | 2,000 | – | 40% (Gomes) | – | – | – | – | – | 35% (Bolsonaro) | – | 26% |
| XP/Ipespe | 17–19 September 201 | 2,000 | – | – | – | 35% (Silva) | – | – | – | 40% (Bolsonaro) | – | 25% |
| XP/Ipespe | 17–19 September 201 | 2,000 | – | – | – | – | – | – | 39% (Alckmin) | 39% (Bolsonaro) | – | 22% |
| Ibope | 16–18 September 2018 | 2,506 | 40% (Haddad) | – | – | – | – | – | – | 40% (Bolsonaro) | – | 20% |
| Ibope | 16–18 September 2018 | 2,506 | – | 40% (Gomes) | – | – | – | – | – | 39% (Bolsonaro) | – | 21% |
| Ibope | 16–18 September 2018 | 2,506 | – | – | – | 36% (Silva) | – | – | – | 41% (Bolsonaro) | – | 23% |
| Ibope | 16–18 September 2018 | 2,506 | – | – | – | – | – | – | 38% (Alckmin) | 38% (Bolsonaro) | – | 24% |
| FSB Pesquisa | 15–16 September 2018 | 2,000 | 38% (Haddad) | – | – | – | – | – | – | 46% (Bolsonaro) | – | 16% |
| FSB Pesquisa | 15–16 September 2018 | 2,000 | – | 42% (Gomes) | – | – | – | – | – | 42% (Bolsonaro) | – | 16% |
| FSB Pesquisa | 15–16 September 2018 | 2,000 | – | – | – | 33% (Silva) | – | – | – | 48% (Bolsonaro) | – | 20% |
| FSB Pesquisa | 15–16 September 2018 | 2,000 | – | – | – | – | – | – | 36% (Alckmin) | 43% (Bolsonaro) | – | 21% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | 26.1% (Haddad) | 38.1% (Gomes) | – | – | – | – | – | – | – | 35.8% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | 35.7% (Haddad) | – | – | 23.3% (Silva) | – | – | – | – | – | 41.0% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | 35.5% (Haddad) | – | – | – | 21.4% (Meirelles) | – | – | – | – | 43.1% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | 33.1% (Haddad) | – | – | – | – | – | 26.8% (Alckmin) | – | – | 40.1% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | 35.7% (Haddad) | – | – | – | – | – | – | 39.0% (Bolsonaro) | – | 25.3% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | – | 43.8% (Gomes) | – | 17.1% (Silva) | – | – | – | – | – | 39.1% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | – | 43.5% (Gomes) | – | – | 14.8% (Meirelles) | – | – | – | – | 41.7% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | – | 39.6% (Gomes) | – | – | – | – | 20.3% (Alckmin) | – | – | 40.1% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | – | 37.8% (Gomes) | – | – | – | – | – | 36.1% (Bolsonaro) | – | 26.1% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | – | – | – | 27.9% (Silva) | 23.2% (Meirelles) | – | – | – | – | 48.9% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | – | – | – | 25.3% (Silva) | – | – | 28.4% (Alckmin) | – | – | 46.3% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | – | – | – | 28.2% (Silva) | – | – | – | 39.4% (Bolsonaro) | – | 32.4% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | – | – | – | – | 19.1% (Meirelles) | – | 28.9% (Alckmin) | – | – | 52.0% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | – | – | – | – | 25.7% (Meirelles) | – | – | 38.6% (Bolsonaro) | – | 35.7% |
| CNT/MDA Archived 2018-09-17 at the Wayback Machine | 12–15 September 2018 | 2,002 | – | – | – | – | – | – | 27.7% (Alckmin) | 38.2% (Bolsonaro) | – | 34.1% |
| Datafolha | 13–14 September 2018 | 2,820 | 27% (Haddad) | 45% (Gomes) | – | – | – | – | – | – | – | 28% |
| Datafolha | 13–14 September 2018 | 2,820 | 34% (Haddad) | – | – | 39% (Silva) | – | – | – | – | – | 27% |
| Datafolha | 13–14 September 2018 | 2,820 | 32% (Haddad) | – | – | – | – | – | 40% (Alckmin) | – | – | 28% |
| Datafolha | 13–14 September 2018 | 2,820 | 40% (Haddad) | – | – | – | – | – | – | 41% (Bolsonaro) | – | 19% |
| Datafolha | 13–14 September 2018 | 2,820 | – | 44% (Gomes) | – | 32% (Silva) | – | – | – | – | – | 24% |
| Datafolha | 13–14 September 2018 | 2,820 | – | 40% (Gomes) | – | – | – | – | 34% (Alckmin) | – | – | 26% |
| Datafolha | 13–14 September 2018 | 2,820 | – | 45% (Gomes) | – | – | – | – | – | 38% (Bolsonaro) | – | 17% |
| Datafolha | 13–14 September 2018 | 2,820 | – | – | – | 36% (Silva) | – | – | 39% (Alckmin) | – | – | 25% |
| Datafolha | 13–14 September 2018 | 2,820 | – | – | – | 43% (Silva) | – | – | – | 39% (Bolsonaro) | – | 18% |
| Datafolha | 13–14 September 2018 | 2,820 | – | – | – | – | – | – | 41% (Alckmin) | 37% (Bolsonaro) | – | 21% |
| XP/Ipespe | 10–12 September 2018 | 2,000 | 28% (Haddad) | – | – | – | – | – | 38% (Alckmin) | – | – | 35% |
| XP/Ipespe | 10–12 September 2018 | 2,000 | 38% (Haddad) | – | – | – | – | – | – | 40% (Bolsonaro) | – | 22% |
| XP/Ipespe | 10–12 September 2018 | 2,000 | – | 35% (Gomes) | – | – | – | – | 35% (Alckmin) | – | – | 31% |
| XP/Ipespe | 10–12 September 2018 | 2,000 | – | 40% (Gomes) | – | – | – | – | – | 35% (Bolsonaro) | – | 26% |
| XP/Ipespe | 10–12 September 2018 | 2,000 | – | – | – | 37% (Silva) | – | – | – | 36% (Bolsonaro) | – | 27% |
| XP/Ipespe | 10–12 September 2018 | 2,000 | – | – | – | – | – | – | 37% (Alckmin) | 36% (Bolsonaro) | – | 26% |
| Vox Populi | 7–11 September 2018 | 2,000 | 32% (Haddad) | – | – | 16% (Silva) | – | – | – | – | – | 51% |
| Vox Populi | 7–11 September 2018 | 2,000 | 33% (Haddad) | – | – | – | – | – | 15% (Alckmin) | – | – | 52% |
| Vox Populi | 7–11 September 2018 | 2,000 | 37% (Haddad, supported by Lula) | – | – | – | – | – | 13% (Alckmin) | – | – | 50% |
| Vox Populi | 7–11 September 2018 | 2,000 | 34% (Haddad) | – | – | – | – | – | – | 24% (Bolsonaro) | – | 42% |
| Vox Populi | 7–11 September 2018 | 2,000 | 36% (Haddad, supported by Lula) | – | – | – | – | – | – | 24% (Bolsonaro) | – | 40% |
| Vox Populi | 7–11 September 2018 | 2,000 | – | 33% (Gomes) | – | 15% (Silva) | – | – | – | – | – | 52% |
| Vox Populi | 7–11 September 2018 | 2,000 | – | 34% (Gomes) | – | – | – | – | 11% (Alckmin) | – | – | 55% |
| Vox Populi | 7–11 September 2018 | 2,000 | – | 32% (Gomes) | – | – | – | – | – | 22% (Bolsonaro) | – | 46% |
| Vox Populi | 7–11 September 2018 | 2,000 | – | – | – | 24% (Silva) | – | – | 16% (Alckmin) | – | – | 61% |
| Vox Populi | 7–11 September 2018 | 2,000 | – | – | – | 26% (Silva) | – | – | – | 24% (Bolsonaro) | – | 49% |
| Vox Populi | 7–11 September 2018 | 2,000 | – | – | – | – | – | – | 18% (Alckmin) | 25% (Bolsonaro) | – | 56% |
| Datafolha | 10 September 2018 | 2,804 | 29% (Haddad) | – | – | – | – | – | 43% (Alckmin) | – | – | 28% |
| Datafolha | 10 September 2018 | 2,804 | 39% (Haddad) | – | – | – | – | – | – | 38% (Bolsonaro) | – | 23% |
| Datafolha | 10 September 2018 | 2,804 | – | 39% (Gomes) | – | – | – | – | 35% (Alckmin) | – | – | 26% |
| Datafolha | 10 September 2018 | 2,804 | – | 45% (Gomes) | – | – | – | – | – | 35% (Bolsonaro) | – | 20% |
| Datafolha | 10 September 2018 | 2,804 | – | – | – | 38% (Silva) | – | – | 37% (Alckmin) | – | – | 25% |
| Datafolha | 10 September 2018 | 2,804 | – | – | – | 43% (Silva) | – | – | – | 37% (Bolsonaro) | – | 20% |
| Datafolha | 10 September 2018 | 2,804 | – | – | – | – | – | – | 43% (Alckmin) | 34% (Bolsonaro) | – | 23% |
| Datafolha | 10 September 2018 | 2,804 | – | 41% (Gomes) | – | 35% (Silva) | – | – | – | – | – | 24% |
| Datafolha | 10 September 2018 | 2,804 | 31% (Haddad) | – | – | 42% (Silva) | – | – | – | – | – | 28% |
| Ibope | 8-10 September 2018 | 2,002 | 36% (Haddad) | – | – | – | – | – | – | 40% (Bolsonaro) | – | 24% |
| Ibope | 8-10 September 2018 | 2,002 | – | 40% (Gomes) | – | – | – | – | – | 37% (Bolsonaro) | – | 22% |
| Ibope | 8-10 September 2018 | 2,002 | – | – | – | 38% (Silva) | – | – | – | 38% (Bolsonaro) | – | 24% |
| Ibope | 8-10 September 2018 | 2,002 | – | – | – | – | – | – | 38% (Alckmin) | 37% (Bolsonaro) | – | 25% |
| RealTime Big Data | 7-9 September 2018 | 3,200 | 33% (Haddad) | – | – | – | – | – | – | 36% (Bolsonaro) | – |
| RealTime Big Data | 7-9 September 2018 | 3,200 | – | 37% (Gomes) | – | – | – | – | – | 34% (Bolsonaro) | – |
| RealTime Big Data | 7-9 September 2018 | 3,200 | – | – | – | 46% (Silva) | – | – | – | 34% (Bolsonaro) | – |
| RealTime Big Data | 7-9 September 2018 | 3,200 | – | – | – | – | – | – | 38% (Alckmin) | 35% (Bolsonaro) | – |
| On 6 September 2018, Jair Bolsonaro was stabbed while he was campaigning in Juiz de Fora, Minas Gerais. |||||||||||||
| Ibope | 1–3 September 2018 | 2,002 | – | 44% (Gomes) | – | – | – | – | – | 33% (Bolsonaro) | – | 23% |
| Ibope | 1–3 September 2018 | 2,002 | – | – | – | – | – | – | 41% (Alckmin) | 32% (Bolsonaro) | – | 27% |
| Ibope | 1–3 September 2018 | 2,002 | – | – | – | 43% (Silva) | – | – | – | 33% (Bolsonaro) | – | 23% |
| Ibope | 1–3 September 2018 | 2,002 | 36% (Haddad) | – | – | – | – | – | – | 37% (Bolsonaro) | – | 27% |
| On 31 August 2018, the Superior Electoral Court votes to officially reject Luiz Inácio Lula da Silva's candidacy. |||||||||||||
| XP/Ipespe | 27–29 August 2018 | 1,000 | 24% (Haddad) | – | – | – | – | – | 36% (Alckmin) | – | – | 40% |
| XP/Ipespe | 27–29 August 2018 | 1,000 | 34% (Haddad) | – | – | – | – | – | – | 37% (Bolsonaro) | – | 29% |
| XP/Ipespe | 27–29 August 2018 | 1,000 | 45% (Lula) | – | – | – | – | – | – | 34% (Bolsonaro) | – | 21% |
| XP/Ipespe | 27–29 August 2018 | 1,000 | – | 29% (Gomes) | – | – | – | – | 34% (Alckmin) | – | – | 37% |
| XP/Ipespe | 27–29 August 2018 | 1,000 | – | 34% (Gomes) | – | – | – | – | – | 32% (Bolsonaro) | – | 34% |
| XP/Ipespe | 27–29 August 2018 | 1,000 | – | – | – | 37% (Silva) | – | – | – | 34% (Bolsonaro) | – | 29% |
| XP/Ipespe | 27–29 August 2018 | 1,000 | – | – | – | – | – | – | 35% (Alckmin) | 35% (Bolsonaro) | – | 30% |
| XP/Ipespe | 20–22 August 2018 | 1,000 | 25% (Haddad) | – | – | – | – | – | 36% (Alckmin) | – | – | 41% |
| XP/Ipespe | 20–22 August 2018 | 1,000 | 32% (Haddad) | – | – | – | – | – | – | 38% (Bolsonaro) | – | 30% |
| XP/Ipespe | 20–22 August 2018 | 1,000 | 45% (Lula) | – | – | – | – | – | – | 33% (Bolsonaro) | – | 22% |
| XP/Ipespe | 20–22 August 2018 | 1,000 | – | 28% (Gomes) | – | – | – | – | 33% (Alckmin) | – | – | 39% |
| XP/Ipespe | 20–22 August 2018 | 1,000 | – | 32% (Gomes) | – | – | – | – | – | 32% (Bolsonaro) | – | 36% |
| XP/Ipespe | 20–22 August 2018 | 1,000 | – | – | – | 37% (Silva) | – | – | – | 33% (Bolsonaro) | – | 30% |
| XP/Ipespe | 20–22 August 2018 | 1,000 | – | – | – | – | – | – | 33% (Alckmin) | 34% (Bolsonaro) | – | 33% |
| Globo/Datafolha | 20–21 August 2018 | 8,433 | 25% (Haddad) | – | – | – | – | – | 36% (Alckmin) | – | – | 41% |
| Globo/Datafolha | 20–21 August 2018 | 8,433 | 29% (Haddad) | – | – | – | – | – | – | 38% (Bolsonaro) | – | 33% |
| Globo/Datafolha | 20–21 August 2018 | 8,433 | 51% (Lula) | – | – | 29% (Silva) | – | – | – | – | – | 20% |
| Globo/Datafolha | 20–21 August 2018 | 8,433 | 53% (Lula) | – | – | – | – | – | 29% (Alckmin) | – | – | 18% |
| Globo/Datafolha | 20–21 August 2018 | 8,433 | 52% (Lula) | – | – | – | – | – | – | 32% (Bolsonaro) | – | 16% |
| Globo/Datafolha | 20–21 August 2018 | 8,433 | – | 31% (Gomes) | – | – | – | – | 37% (Alckmin) | – | – | 32% |
| Globo/Datafolha | 20–21 August 2018 | 8,433 | – | 38% (Gomes) | – | – | – | – | – | 35% (Bolsonaro) | – | 27% |
| Globo/Datafolha | 20–21 August 2018 | 8,433 | – | – | – | 41% (Silva) | – | – | 33% (Alckmin) | – | – | 26% |
| Globo/Datafolha | 20–21 August 2018 | 8,433 | – | – | – | 45% (Silva) | – | – | – | 34% (Bolsonaro) | – | 21% |
| Globo/Datafolha | 20–21 August 2018 | 8,433 | – | – | – | – | – | – | 38% (Alckmin) | 33% (Bolsonaro) | – | 29% |
| CNT/MDA | 15–18 August 2018 | 2,002 | 49.4% (Lula) | 18.5% (Gomes) | – | – | – | – | – | – | – | 32.1% |
| CNT/MDA | 15–18 August 2018 | 2,002 | 49.8% (Lula) | – | – | 18.8% (Silva) | – | – | – | – | – | 31.4% |
| CNT/MDA | 15–18 August 2018 | 2,002 | 49.5% (Lula) | – | – | – | – | – | 20.4% (Alckmin) | – | – | 30.1% |
| CNT/MDA | 15–18 August 2018 | 2,002 | 50.1% (Lula) | – | – | – | – | – | – | 26.4% (Bolsonaro) | – | 23.5% |
| CNT/MDA | 15–18 August 2018 | 2,002 | – | 26.1% (Gomes) | – | 25.2% (Silva) | – | – | – | – | – | 48.7% |
| CNT/MDA | 15–18 August 2018 | 2,002 | – | 25.3% (Gomes) | – | – | – | – | 22.0% (Alckmin) | – | – | 52.7% |
| CNT/MDA | 15–18 August 2018 | 2,002 | – | 28.2% (Gomes) | – | – | – | – | – | 29.4% (Bolsonaro) | – | 42.4% |
| CNT/MDA | 15–18 August 2018 | 2,002 | – | – | – | 26.7% (Silva) | – | – | 23.9% (Alckmin) | – | – | 49.4% |
| CNT/MDA | 15–18 August 2018 | 2,002 | – | – | – | 29.1% (Silva) | – | – | – | 29.3% (Bolsonaro) | – | 41.6% |
| CNT/MDA | 15–18 August 2018 | 2,002 | – | – | – | – | – | – | 26.4% (Alckmin) | 29.4% (Bolsonaro) | – | 44.2% |
| Ipespe | 13–15 August 2018 | 1,000 | 25% (Haddad) | – | – | – | – | – | 35% (Alckmin) | – | – | 41% |
| Ipespe | 13–15 August 2018 | 1,000 | 32% (Haddad) | – | – | – | – | – | – | 37% (Bolsonaro) | – | 31% |
| Ipespe | 13–15 August 2018 | 1,000 | 43% (Lula) | – | – | – | – | – | – | 34% (Bolsonaro) | – | 24% |
| Ipespe | 13–15 August 2018 | 1,000 | – | 27% (Gomes) | – | – | – | – | 32% (Alckmin) | – | – | 42% |
| Ipespe | 13–15 August 2018 | 1,000 | – | 30% (Gomes) | – | – | – | – | – | 33% (Bolsonaro) | – | 36% |
| Ipespe | 13–15 August 2018 | 1,000 | – | – | – | 36% (Silva) | – | – | – | 34% (Bolsonaro) | – | 29% |
| Ipespe | 13–15 August 2018 | 1,000 | – | – | – | – | – | – | 32% (Alckmin) | 34% (Bolsonaro) | – | 29% |
| Ipespe | 6–8 August 2018 | 1,000 | 25% (Haddad) | – | – | – | – | – | 36% (Alckmin) | – | – | 41% |
| Ipespe | 6–8 August 2018 | 1,000 | 29% (Haddad) | – | – | – | – | – | – | 37% (Bolsonaro) | – | 34% |
| Ipespe | 6–8 August 2018 | 1,000 | 41% (Lula) | – | – | – | – | – | – | 32% (Bolsonaro) | – | 26% |
| Ipespe | 6–8 August 2018 | 1,000 | – | 28% (Gomes) | – | – | – | – | 33% (Alckmin) | – | – | 40% |
| Ipespe | 6–8 August 2018 | 1,000 | – | 30% (Gomes) | – | – | – | – | – | 32% (Bolsonaro) | – | 37% |
| Ipespe | 6–8 August 2018 | 1,000 | – | – | – | 38% (Silva) | – | – | – | 32% (Bolsonaro) | – | 30% |
| Ipespe | 6–8 August 2018 | 1,000 | – | – | – | – | – | – | 33% (Alckmin) | 33% (Bolsonaro) | – | 33% |
| Ipespe | 30 July–1 August 2018 | 1,000 | 23% (Haddad) | – | – | – | – | – | 34% (Alckmin) | – | – | 43% |
| Ipespe | 30 July–1 August 2018 | 1,000 | 28% (Haddad) | – | – | – | – | – | – | 37% (Bolsonaro) | – | 35% |
| Ipespe | 30 July–1 August 2018 | 1,000 | 41% (Lula) | – | – | – | – | – | – | 33% (Bolsonaro) | – | 26% |
| Ipespe | 30 July–1 August 2018 | 1,000 | – | 29% (Gomes) | – | – | – | – | 32% (Alckmin) | – | – | 39% |
| Ipespe | 30 July–1 August 2018 | 1,000 | – | 32% (Gomes) | – | – | – | – | – | 33% (Bolsonaro) | – | 35% |
| Ipespe | 30 July–1 August 2018 | 1,000 | – | – | – | 37% (Silva) | – | – | – | 32% (Bolsonaro) | – | 31% |
| Ipespe | 30 July–1 August 2018 | 1,000 | – | – | – | – | – | – | 33% (Alckmin) | 34% (Bolsonaro) | – | 33% |
| Ipespe | 23–25 July 2018 | 1,000 | 22% (Haddad) | – | – | – | – | – | 36% (Alckmin) | – | – | 43% |
| Ipespe | 23–25 July 2018 | 1,000 | 27% (Haddad) | – | – | – | – | – | – | 38% (Bolsonaro) | – | 36% |
| Ipespe | 23–25 July 2018 | 1,000 | 40% (Lula) | – | – | – | – | – | – | 34% (Bolsonaro) | – | 26% |
| Ipespe | 23–25 July 2018 | 1,000 | – | 29% (Gomes) | – | – | – | – | 34% (Alckmin) | – | – | 37% |
| Ipespe | 23–25 July 2018 | 1,000 | – | 32% (Gomes) | – | – | – | – | – | 34% (Bolsonaro) | – | 34% |
| Ipespe | 23–25 July 2018 | 1,000 | – | – | – | 36% (Silva) | – | – | – | 34% (Bolsonaro) | – | 30% |
| Ipespe | 23–25 July 2018 | 1,000 | – | – | – | – | – | – | 34% (Alckmin) | 35% (Bolsonaro) | – | 32% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | 10% (Haddad) | – | – | 32% (Silva) | – | – | – | – | – | 58% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | 16% (Haddad) | – | – | – | – | – | 20% (Alckmin) | – | – | 64% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | 15% (Haddad) | – | – | – | – | – | – | 31% (Bolsonaro) | – | 54% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | 31% (Lula) | – | – | 24% (Silva) | – | – | – | – | – | 45% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | 33% (Lula) | – | – | – | – | – | 18% (Alckmin) | – | – | 49% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | 37% (Lula) | – | – | – | – | – | – | 30% (Bolsonaro) | – | 33% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | – | 22% (Gomes) | – | – | – | 16% (Dias) | – | – | – | 61% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | – | 25% (Gomes) | – | – | – | – | 25% (Alckmin) | – | – | 50% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | – | 25% (Gomes) | – | – | – | – | – | 27% (Bolsonaro) | – | 48% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | – | – | – | 33% (Silva) | – | – | 20% (Alckmin) | – | – | 47% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | – | – | – | 30% (Silva) | – | – | – | 28% (Bolsonaro) | – | 42% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | – | – | – | – | – | 14% (Dias) | – | 31% (Bolsonaro) | – | 55% |
| Ideia Big Data | 20–23 July 2018 | 2,036 | – | – | – | – | – | – | 26% (Alckmin) | 25% (Bolsonaro) | – | 49% |
| Vox Populi | 18–20 July 2018 | 2,000 | 50% (Lula) | 11% (Gomes) | – | – | – | – | – | – | – | 40% |
| Vox Populi | 18–20 July 2018 | 2,000 | 50% (Lula) | – | – | 12% (Silva) | – | – | – | – | – | 38% |
| Vox Populi | 18–20 July 2018 | 2,000 | 52% (Lula) | – | – | – | – | – | 10% (Alckmin) | – | – | 38% |
| Vox Populi | 18–20 July 2018 | 2,000 | 50% (Lula) | – | – | – | – | – | – | 16% (Bolsonaro) | – | 33% |
| Ipespe | 16–18 July 2018 | 1,000 | 20% (Haddad) | – | – | – | – | – | 29% (Alckmin) | – | – | 42% |
| Ipespe | 16–18 July 2018 | 1,000 | 28% (Haddad) | – | – | – | – | – | – | 38% (Bolsonaro) | – | 35% |
| Ipespe | 16–18 July 2018 | 1,000 | 41% (Lula) | – | – | – | – | – | – | 34% (Bolsonaro) | – | 25% |
| Ipespe | 16–18 July 2018 | 1,000 | – | 31% (Gomes) | – | – | – | – | 32% (Alckmin) | – | – | 37% |
| Ipespe | 16–18 July 2018 | 1,000 | – | 33% (Gomes) | – | – | – | – | – | 34% (Bolsonaro) | – | 33% |
| Ipespe | 16–18 July 2018 | 1,000 | – | – | – | 37% (Silva) | – | – | – | 34% (Bolsonaro) | – | 29% |
| Ipespe | 16–18 July 2018 | 1,000 | – | – | – | – | – | – | 33% (Alckmin) | 35% (Bolsonaro) | – | 32% |
| Ipespe Archived 2018-07-13 at the Wayback Machine | 9–11 July 2018 | 1,000 | 20% (Haddad) | – | – | – | – | – | 30% (Alckmin) | – | – | 44% |
| Ipespe Archived 2018-07-13 at the Wayback Machine | 9–11 July 2018 | 1,000 | 40% (Lula) | – | – | – | – | – | – | 33% (Bolsonaro) | – | 27% |
| Ipespe Archived 2018-07-13 at the Wayback Machine | 9–11 July 2018 | 1,000 | – | 30% (Gomes) | – | – | – | – | 32% (Alckmin) | – | – | 38% |
| Ipespe Archived 2018-07-13 at the Wayback Machine | 9–11 July 2018 | 1,000 | – | 31% (Gomes) | – | – | – | – | – | 33% (Bolsonaro) | – | 36% |
| Ipespe Archived 2018-07-13 at the Wayback Machine | 9–11 July 2018 | 1,000 | – | – | – | 37% (Silva) | – | – | – | 33% (Bolsonaro) | – | 29% |
| Ipespe Archived 2018-07-13 at the Wayback Machine | 9–11 July 2018 | 1,000 | – | – | – | – | – | – | 32% (Alckmin) | 34% (Bolsonaro) | – | 35% |
| Ipespe | 2–4 July 2018 | 1,000 | 20% (Haddad) | – | – | – | – | – | 28% (Alckmin) | – | – | 45% |
| Ipespe | 2–4 July 2018 | 1,000 | 39% (Lula) | – | – | – | – | – | – | 33% (Bolsonaro) | – | 29% |
| Ipespe | 2–4 July 2018 | 1,000 | – | 31% (Gomes) | – | – | – | – | 33% (Alckmin) | – | – | 37% |
| Ipespe | 2–4 July 2018 | 1,000 | – | 31% (Gomes) | – | – | – | – | – | 34% (Bolsonaro) | – | 34% |
| Ipespe | 2–4 July 2018 | 1,000 | – | – | – | 36% (Silva) | – | – | – | 33% (Bolsonaro) | – | 31% |
| Ipespe | 2–4 July 2018 | 1,000 | – | – | – | – | – | – | 32% (Alckmin) | 34% (Bolsonaro) | – | 35% |
| DataPoder360 | 25–29 June 2018 | 5,500 | 23% (Haddad) | – | – | – | – | – | – | 36% (Bolsonaro) | – | 41% |
| DataPoder360 | 25–29 June 2018 | 5,500 | – | 26% (Gomes) | – | – | – | – | – | 36% (Bolsonaro) | – | 38% |
| DataPoder360 | 25–29 June 2018 | 5,500 | – | – | – | 31% (Silva) | – | – | – | 36% (Bolsonaro) | – | 34% |
| DataPoder360 | 25–29 June 2018 | 5,500 | – | – | – | – | – | – | 25% (Alckmin) | 35% (Bolsonaro) | – | 40% |
| Ipespe | 25–27 June 2018 | 1,000 | 19% (Haddad) | – | – | – | – | – | 29% (Alckmin) | – | – | 45% |
| Ipespe | 25–27 June 2018 | 1,000 | 40% (Lula) | – | – | – | – | – | – | 33% (Bolsonaro) | – | 27% |
| Ipespe | 25–27 June 2018 | 1,000 | – | 32% (Gomes) | – | – | – | – | 32% (Alckmin) | – | – | 35% |
| Ipespe | 25–27 June 2018 | 1,000 | – | 32% (Gomes) | – | – | – | – | – | 33% (Bolsonaro) | – | 35% |
| Ipespe | 25–27 June 2018 | 1,000 | – | – | – | 35% (Silva) | – | – | – | 32% (Bolsonaro) | – | 33% |
| Ipespe | 25–27 June 2018 | 1,000 | – | – | – | – | – | – | 32% (Alckmin) | 33% (Bolsonaro) | – | 36% |
| Ipespe | 18–20 June 2018 | 1,000 | 19% (Haddad) | – | – | – | – | – | 28% (Alckmin) | – | – | 48% |
| Ipespe | 18–20 June 2018 | 1,000 | 41% (Lula) | – | – | – | – | – | – | 33% (Bolsonaro) | – | 26% |
| Ipespe | 18–20 June 2018 | 1,000 | – | 30% (Gomes) | – | – | – | – | 32% (Alckmin) | – | – | 38% |
| Ipespe | 18–20 June 2018 | 1,000 | – | 32% (Gomes) | – | – | – | – | – | 33% (Bolsonaro) | – | 35% |
| Ipespe | 18–20 June 2018 | 1,000 | – | – | – | 36% (Silva) | – | – | – | 32% (Bolsonaro) | – | 31% |
| Ipespe | 18–20 June 2018 | 1,000 | – | – | – | – | – | – | 31% (Alckmin) | 32% (Bolsonaro) | – | 37% |
| Ipespe | 11–13 June 2018 | 1,000 | 19% (Haddad) | – | – | – | – | – | 29% (Alckmin) | – | – | 48% |
| Ipespe | 11–13 June 2018 | 1,000 | 42% (Lula) | – | – | – | – | – | – | 34% (Bolsonaro) | – | 24% |
| Ipespe | 11–13 June 2018 | 1,000 | – | 30% (Gomes) | – | – | – | – | 31% (Alckmin) | – | – | 39% |
| Ipespe | 11–13 June 2018 | 1,000 | – | 33% (Gomes) | – | – | – | – | – | 34% (Bolsonaro) | – | 34% |
| Ipespe | 11–13 June 2018 | 1,000 | – | – | – | 38% (Silva) | – | – | – | 34% (Bolsonaro) | – | 28% |
| Ipespe | 11–13 June 2018 | 1,000 | – | – | – | – | – | – | 31% (Alckmin) | 33% (Bolsonaro) | – | 35% |
| Datafolha | 6–7 June 2018 | 2,824 | 19% (Haddad) | 38% (Gomes) | – | – | – | – | – | – | – | 42% |
| Datafolha | 6–7 June 2018 | 2,824 | 20% (Haddad) | – | – | – | – | – | 36% (Alckmin) | – | – | 44% |
| Datafolha | 6–7 June 2018 | 2,824 | 27% (Haddad) | – | – | – | – | – | – | 36% (Bolsonaro) | – | 37% |
| Datafolha | 6–7 June 2018 | 2,824 | 46% (Lula) | – | – | 31% (Silva) | – | – | – | – | – | 22% |
| Datafolha | 6–7 June 2018 | 2,824 | 49% (Lula) | – | – | – | – | – | 27% (Alckmin) | – | – | 23% |
| Datafolha | 6–7 June 2018 | 2,824 | 49% (Lula) | – | – | – | – | – | – | 32% (Bolsonaro) | – | 18% |
| Datafolha | 6–7 June 2018 | 2,824 | – | 29% (Gomes) | – | 41% (Silva) | – | – | – | – | – | 30% |
| Datafolha | 6–7 June 2018 | 2,824 | – | 32% (Gomes) | – | – | – | – | 31% (Alckmin) | – | – | 37% |
| Datafolha | 6–7 June 2018 | 2,824 | – | 36% (Gomes) | – | – | – | – | – | 34% (Bolsonaro) | – | 31% |
| Datafolha | 6–7 June 2018 | 2,824 | – | – | – | 42% (Silva) | – | – | 27% (Alckmin) | – | – | 31% |
| Datafolha | 6–7 June 2018 | 2,824 | – | – | – | 42% (Silva) | – | – | – | 32% (Bolsonaro) | – | 26% |
| Datafolha | 6–7 June 2018 | 2,824 | – | – | – | – | – | – | 33% (Alckmin) | 33% (Bolsonaro) | – | 35% |
| Ipespe | 4–6 June 2018 | 1,000 | 20% (Haddad) | – | – | – | – | – | 30% (Alckmin) | – | – | 48% |
| Ipespe | 4–6 June 2018 | 1,000 | 40% (Lula) | – | – | – | – | – | – | 35% (Bolsonaro) | – | 26% |
| Ipespe | 4–6 June 2018 | 1,000 | – | 32% (Gomes) | – | – | – | – | 29% (Alckmin) | – | – | 40% |
| Ipespe | 4–6 June 2018 | 1,000 | – | 33% (Gomes) | – | – | – | – | – | 35% (Bolsonaro) | – | 31% |
| Ipespe | 4–6 June 2018 | 1,000 | – | – | – | 36% (Silva) | – | – | – | 35% (Bolsonaro) | – | 29% |
| Ipespe | 4–6 June 2018 | 1,000 | – | – | – | – | – | – | 29% (Alckmin) | 34% (Bolsonaro) | – | 37% |
| DataPoder360 | 25–31 May 2018 | 10,500 | 20% (Haddad) | – | – | – | – | – | – | 35% (Bolsonaro) | – | 45% |
| DataPoder360 | 25–31 May 2018 | 10,500 | – | 21% (Gomes) | – | – | – | – | – | 34% (Bolsonaro) | – | 45% |
| DataPoder360 | 25–31 May 2018 | 10,500 | – | – | – | 25% (Silva) | – | – | – | 35% (Bolsonaro) | – | 41% |
| DataPoder360 | 25–31 May 2018 | 10,500 | – | – | – | – | – | – | 20% (Alckmin) | 31% (Bolsonaro) | – | 48% |
| Ipespe | 21–23 May 2018 | 1,000 | 25% (Haddad) | – | – | – | – | – | 28% (Alckmin) | – | – | 55% |
| Ipespe | 21–23 May 2018 | 1,000 | 36% (Lula) | – | – | – | – | – | – | 38% (Bolsonaro) | – | 26% |
| Ipespe | 21–23 May 2018 | 1,000 | – | 27% (Gomes) | – | – | – | – | 30% (Alckmin) | – | – | 43% |
| Ipespe | 21–23 May 2018 | 1,000 | – | 29% (Gomes) | – | – | – | – | – | 38% (Bolsonaro) | – | 32% |
| Ipespe | 21–23 May 2018 | 1,000 | – | – | – | 31% (Silva) | – | – | – | 37% (Bolsonaro) | – | 32% |
| Ipespe | 21–23 May 2018 | 1,000 | – | – | – | – | – | – | 28% (Alckmin) | 35% (Bolsonaro) | – | 37% |
| Vox Populi | 19–23 May 2018 | 2,000 | 45% (Lula) | – | – | 14% (Silva) | – | – | – | – | – | 40% |
| Vox Populi | 19–23 May 2018 | 2,000 | 47% (Lula) | – | – | – | – | – | 11% (Alckmin) | – | – | 42% |
| Vox Populi | 19–23 May 2018 | 2,000 | 47% (Lula) | – | – | – | – | – | – | 16% (Bolsonaro) | – | 37% |
| Ipespe | 15–18 May 2018 | 1,000 | 15% (Haddad) | – | – | – | – | – | 31% (Alckmin) | – | – | 53% |
| Ipespe | 15–18 May 2018 | 1,000 | 35% (Lula) | – | – | – | – | – | – | 37% (Bolsonaro) | – | 28% |
| Ipespe | 15–18 May 2018 | 1,000 | – | 27% (Gomes) | – | – | – | – | 32% (Alckmin) | – | – | 41% |
| Ipespe | 15–18 May 2018 | 1,000 | – | 29% (Gomes) | – | – | – | – | – | 36% (Bolsonaro) | – | 36% |
| Ipespe | 15–18 May 2018 | 1,000 | – | – | – | 31% (Silva) | – | – | – | 35% (Bolsonaro) | – | 34% |
| Ipespe | 15–18 May 2018 | 1,000 | – | – | – | – | – | – | 29% (Alckmin) | 33% (Bolsonaro) | – | 38% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | 10.0% (Haddad) | – | – | – | – | – | 25.0% (Alckmin) | – | – | 65.0% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | 14.0% (Haddad) | – | – | – | – | – | – | 31.5% (Bolsonaro) | – | 54.5% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | 44.4% (Lula) | – | – | 21.0% (Silva) | – | – | – | – | – | 34.6% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | 47.1% (Lula) | – | – | – | 13.3% (Meirelles) | – | – | – | – | 39.6% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | 49.0% (Lula) | – | – | – | 8.3% (Temer) | – | – | – | – | 42.7% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | 44.9% (Lula) | – | – | – | – | – | 19.6% (Alckmin) | – | – | 35.5% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | 45.7% (Lula) | – | – | – | – | – | – | 25.9% (Bolsonaro) | – | 28.4% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | – | 25.7% (Gomes) | – | – | 9.0% (Meirelles) | – | – | – | – | 65.3% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | – | 30.4% (Gomes) | – | – | 5.6% (Temer) | – | – | – | – | 64.0% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | – | 20.9% (Gomes) | – | – | – | – | 20.4% (Alckmin) | – | – | 58.7% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | – | 24.2% (Gomes) | – | – | – | – | – | 28.2% (Bolsonaro) | – | 47.6% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | – | – | – | 26.6% (Silva) | – | – | 18.9% (Alckmin) | – | – | 54.5% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | – | – | – | 27.2% (Silva) | – | – | – | 27.2% (Bolsonaro) | – | 45.6% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | – | – | – | – | 11.7% (Meirelles) | – | – | 30.8% (Bolsonaro) | – | 57.5% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | – | – | – | – | 5.3% (Temer) | – | – | 34.7% (Bolsonaro) | – | 60.0% |
| MDA Archived 2018-08-16 at the Wayback Machine | 9–12 May 2018 | 2,002 | – | – | – | – | | – | 20.2% (Alckmin) | 27.8% (Bolsonaro) | – | 52.0% |
| DataPoder360 | 16–19 April 2018 | 2,000 | – | – | 37% (Barbosa) | – | – | – | – | 32% (Bolsonaro) | – | 31% |
| DataPoder360 | 16–19 April 2018 | 2,000 | – | – | – | – | – | – | 18% (Alckmin) | 41% (Bolsonaro) | – | 41% |
| Vox Populi | 13–15 April 2018 | 2,000 | 54% (Lula) | – | 20% (Barbosa) | – | – | – | – | – | – | 26% |
| Vox Populi | 13–15 April 2018 | 2,000 | 54% (Lula) | – | – | 16% (Silva) | – | – | – | – | – | 30% |
| Vox Populi | 13–15 April 2018 | 2,000 | 56% (Lula) | – | – | – | – | – | 12% (Alckmin) | – | – | 32% |
| Vox Populi | 13–15 April 2018 | 2,000 | 55% (Lula) | – | – | – | – | – | – | 17% (Bolsonaro) | – | 28% |
| Datafolha | 9–13 April 2018 | 4,260 | 21% (Haddad) | – | – | – | – | – | 37% (Alckmin) | – | – | 41% |
| Datafolha | 9–13 April 2018 | 4,260 | 26% (Haddad) | – | – | – | – | – | – | 37% (Bolsonaro) | – | 37% |
| Datafolha | 9–13 April 2018 | 4,260 | 46% (Lula) | – | – | 32% (Silva) | – | – | – | – | – | 21% |
| Datafolha | 9–13 April 2018 | 4,260 | 48% (Lula) | – | – | – | – | – | 27% (Alckmin) | – | – | 24% |
| Datafolha | 9–13 April 2018 | 4,260 | 48% (Lula) | – | – | – | – | – | – | 31% (Bolsonaro) | – | 20% |
| Datafolha | 9–13 April 2018 | 4,260 | 17% (Wagner) | – | – | – | – | – | 41% (Alckmin) | – | – | 43% |
| Datafolha | 9–13 April 2018 | 4,260 | 23% (Wagner) | – | – | – | – | – | – | 39% (Bolsonaro) | – | 38% |
| Datafolha | 9–13 April 2018 | 4,260 | – | 32% (Gomes) | – | – | – | – | 32% (Alckmin) | – | – | 36% |
| Datafolha | 9–13 April 2018 | 4,260 | – | 35% (Gomes) | – | – | – | – | – | 35% (Bolsonaro) | – | 31% |
| Datafolha | 9–13 April 2018 | 4,260 | – | – | – | 44% (Silva) | – | – | 27% (Alckmin) | – | – | 29% |
| Datafolha | 9–13 April 2018 | 4,260 | – | – | – | 44% (Silva) | – | – | – | 31% (Bolsonaro) | – | 25% |
| Datafolha | 9–13 April 2018 | 4,260 | – | – | – | – | – | – | 33% (Alckmin) | 32% (Bolsonaro) | – | 34% |
| After Luiz Inácio Lula da Silva is sentenced to 12 years in prison by the Regional Federal Court of the 4th Region, the Supreme Federal Court rules to reject Lula's plea and an arrest warrant is given. The ruling of the TRF-4 bars Lula from running in the election |||||||||||||
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | 43.8% (Lula) | – | – | 20.3% (Silva) | – | – | – | – | – | 35.9% |
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | 47.5% (Lula) | – | – | – | 6.8% (Temer) | – | – | – | – | 45.7% |
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | 44.5% (Lula) | – | – | – | – | – | 22.5% (Alckmin) | – | – | 33.0% |
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | 44.1% (Lula) | – | – | – | – | – | – | 25.8% (Bolsonaro) | – | 30.1% |
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | – | – | – | 36.8% (Silva) | 5.3% (Temer) | – | – | – | – | 57.9% |
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | – | – | – | 26.3% (Silva) | – | – | 24.6% (Alckmin) | – | – | 49.1% |
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | – | – | – | 26.6% (Silva) | – | – | – | 27.7% (Bolsonaro) | – | 45.7% |
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | – | – | – | – | 3.8% (Temer) | – | 36.6% (Alckmin) | – | – | 59.6% |
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | – | – | – | – | 5.7% (Temer) | – | – | 36.0% (Bolsonaro) | – | 58.3% |
| MDA Archived 2018-08-03 at the Wayback Machine | 28 February–3 March 2018 | 2,002 | – | – | – | – | – | – | 24.3% (Alckmin) | 26.7% (Bolsonaro) | – | 49.0% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | 8.8% (Haddad) | – | 28.3% (Barbosa) | – | – | – | – | – | – | 63.0% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | 11.7% (Haddad) | – | – | – | 11.5% (Meirelles) | – | – | – | – | 76.9% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | 8.8% (Wagner) | – | – | 30.5% (Silva) | – | – | – | – | – | 60.8% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | 9.1% (Wagner) | – | – | – | – | 17.3% (Dias) | – | – | – | 73.6% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | 10.9% (Wagner) | – | – | – | – | – | 23.8% (Alckmin) | – | – | 65.4% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | – | 25.6% (Gomes) | – | – | 8.4% (Meirelles) | – | – | – | – | 66.1% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | – | 25.5% (Gomes) | – | – | – | – | 6.9% (Virgílio) | – | – | 67.6% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | – | 22.0% (Gomes) | – | – | – | – | 17.9% (Alckmin) | – | – | 60.2% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | – | 23.2% (Gomes) | – | – | – | – | – | 25.8% (Bolsonaro) | – | 51.1% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | – | – | – | 27.8% (Silva) | – | – | 17.6% (Alckmin) | – | – | 54.7% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | – | – | – | 31.2% (Silva) | – | – | 6.8% (Virgílio) | – | – | 62.1% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | – | – | – | 25.9% (Silva) | – | – | – | 25.6% (Bolsonaro) | – | 48.6% |
| #PESQUISA365 | 2–7 February 2018 | 2,000 | – | – | – | – | – | – | 17.6% (Alckmin) | 25.3% (Bolsonaro) | – | 57.2% |
| Datafolha | 29–30 January 2018 | 2,826 | 47% (Lula) | – | – | 32% (Silva) | – | – | – | – | – | 21% |
| Datafolha | 29–30 January 2018 | 2,826 | 49% (Lula) | – | – | – | – | – | 30% (Alckmin) | – | – | 22% |
| Datafolha | 29–30 January 2018 | 2,826 | 49% (Lula) | – | – | – | – | – | – | 32% (Bolsonaro) | – | 20% |
| Datafolha | 29–30 January 2018 | 2,826 | – | 32% (Gomes) | – | – | – | – | 34% (Alckmin) | – | – | 34% |
| Datafolha | 29–30 January 2018 | 2,826 | – | – | – | 42% (Silva) | – | – | – | 32% (Bolsonaro) | – | 27% |
| Datafolha | 29–30 January 2018 | 2,826 | – | – | – | – | – | – | 35% (Alckmin) | 33% (Bolsonaro) | – | 32% |
| Vox Populi | 9–12 December 2017 | 2,000 | 50% (Lula) | – | – | 13% (Silva) | – | – | – | – | – | 37% |
| Vox Populi | 9–12 December 2017 | 2,000 | 50% (Lula) | – | – | – | – | – | 14% (Alckmin) | – | – | 35% |
| Vox Populi | 9–12 December 2017 | 2,000 | 49% (Lula) | – | – | – | – | – | – | 18% (Bolsonaro) | – | 33% |
| DataPoder360 | 8–11 December 2017 | 2,210 | 41% (Lula) | – | – | – | – | – | 28% (Alckmin) | – | – | 31% |
| DataPoder360 | 8–11 December 2017 | 2,210 | 41% (Lula) | – | – | – | – | – | – | 30% (Bolsonaro) | – | 29% |
| Datafolha | 29–30 November 2017 | 2,765 | 48% (Lula) | – | – | 35% (Silva) | – | – | – | – | – | 17% |
| Datafolha | 29–30 November 2017 | 2,765 | 52% (Lula) | – | – | – | – | – | 30% (Alckmin) | – | – | 18% |
| Datafolha | 29–30 November 2017 | 2,765 | 51% (Lula) | – | – | – | – | – | – | 33% (Bolsonaro) | – | 16% |
| Datafolha | 29–30 November 2017 | 2,765 | – | 33% (Gomes) | – | – | – | – | 35% (Alckmin) | – | – | 32% |
| Datafolha | 29–30 November 2017 | 2,765 | – | – | – | 46% (Silva) | – | – | – | 32% (Bolsonaro) | – | 22% |
| Vox Populi | 27–30 October 2017 | 2,000 | 48% (Lula) | – | – | 16% (Silva) | – | – | – | – | – | 35% |
| Vox Populi | 27–30 October 2017 | 2,000 | 50% (Lula) | – | – | – | – | – | 14% (Alckmin) | – | – | 36% |
| Vox Populi | 27–30 October 2017 | 2,000 | 51% (Lula) | – | – | – | – | – | 14% (Doria) | – | – | 35% |
| Vox Populi | 27–30 October 2017 | 2,000 | 49% (Lula) | – | – | – | – | – | – | 21% (Bolsonaro) | – | 31% |
| Vox Populi | 27–30 October 2017 | 2,000 | 50% (Lula) | – | – | – | – | – | – | – | 14% (Huck) | 36% |
| Datafolha | 27–28 September 2017 | | 17% (Haddad) | – | – | – | – | – | 44% (Alckmin) | – | – | 39% |
| Datafolha | 27–28 September 2017 | | 44% (Lula) | – | – | 36% (Silva) | – | – | – | – | – | 20% |
| Datafolha | 27–28 September 2017 | | 46% (Lula) | – | – | – | – | – | 32% (Alckmin) | – | – | 21% |
| Datafolha | 27–28 September 2017 | | 48% (Lula) | – | – | – | – | – | 32% (Doria) | – | – | 20% |
| Datafolha | 27–28 September 2017 | | 47% (Lula) | – | – | – | – | – | – | 33% (Bolsonaro) | – | 21% |
| Datafolha | 27–28 September 2017 | | 44% (Lula) | – | – | – | – | – | – | – | 42% (Moro) | 14% |
| Datafolha | 27–28 September 2017 | | – | 29% (Gomes) | – | – | – | – | 37% (Alckmin) | – | – | 33% |
| Datafolha | 27–28 September 2017 | | – | 32% (Gomes) | – | – | – | – | 34% (Doria) | – | – | 35% |
| Datafolha | 27–28 September 2017 | | – | – | – | 47% (Silva) | – | – | – | 29% (Bolsonaro) | – | 24% |
| MDA | 13–16 September 2017 | 2,002 | 39.8% (Lula) | – | – | 25.8% (Silva) | – | – | – | – | – | 34.4% |
| MDA | 13–16 September 2017 | 2,002 | 40.6% (Lula) | – | – | – | – | – | 23.2% (Alckmin) | – | – | 36.2% |
| MDA | 13–16 September 2017 | 2,002 | 41.6% (Lula) | – | – | – | – | – | 25.2% (Doria) | – | – | 33.2% |
| MDA | 13–16 September 2017 | 2,002 | 41.8% (Lula) | – | – | – | – | – | 14.8% (Neves) | – | – | 43.4% |
| MDA | 13–16 September 2017 | 2,002 | 40.5% (Lula) | – | – | – | – | – | – | 28.5% (Bolsonaro) | – | 31.0% |
| MDA | 13–16 September 2017 | 2,002 | – | – | – | 28.4% (Silva) | – | – | 23.6% (Alckmin) | – | – | 48.0% |
| MDA | 13–16 September 2017 | 2,002 | – | – | – | 30.5% (Silva) | – | – | 22.7% (Doria) | – | – | 46.8% |
| MDA | 13–16 September 2017 | 2,002 | – | – | – | 33.6% (Silva) | – | – | 13.0% (Neves) | – | – | 53.4% |
| MDA | 13–16 September 2017 | 2,002 | – | – | – | 29.2% (Silva) | – | – | – | 27.9% (Bolsonaro) | – | 42.9% |
| MDA | 13–16 September 2017 | 2,002 | – | – | – | – | – | – | 23.8% (Alckmin) | 28.0% (Bolsonaro) | – | 48.2% |
| MDA | 13–16 September 2017 | 2,002 | – | – | – | – | – | – | 23.9% (Doria) | 28.5% (Bolsonaro) | – | 47.6% |
| MDA | 13–16 September 2017 | 2,002 | – | – | – | – | – | – | 13.9% (Neves) | 32.0% (Bolsonaro) | – | 54.1% |
| Vox Populi | 29–31 July 2017 | 1,999 | 52% (Lula) | – | – | 15% (Silva) | – | – | – | – | – | 33% |
| Vox Populi | 29–31 July 2017 | 1,999 | 52% (Lula) | – | – | – | – | – | 15% (Alckmin) | – | – | 34% |
| Vox Populi | 29–31 July 2017 | 1,999 | 53% (Lula) | – | – | – | – | – | 15% (Doria) | – | – | 33% |
| Vox Populi | 29–31 July 2017 | 1,999 | 53% (Lula) | – | – | – | – | – | – | 17% (Bolsonaro) | – | 30% |
| Paraná Pesquisas | 24–27 July 2017 | 2,020 | 36.3% (Lula) | – | – | 29.0% (Silva) | – | – | – | – | – | 34.7% |
| Paraná Pesquisas | 24–27 July 2017 | 2,020 | 39.0% (Lula) | – | – | – | – | – | 26.9% (Alckmin) | – | – | 34.1% |
| Paraná Pesquisas | 24–27 July 2017 | 2,020 | 38.5% (Lula) | – | – | – | – | – | 32.2% (Doria) | – | – | 29.3% |
| Paraná Pesquisas | 24–27 July 2017 | 2,020 | 38.7% (Lula) | – | – | – | – | – | – | 32.3% (Bolsonaro) | – | 29.1% |
| Paraná Pesquisas | 24–27 July 2017 | 2,020 | 37.1% (Lula) | – | 31.1% (Barbosa) | – | – | – | – | – | – | 31.8% |
| Datafolha | 21–23 June 2017 | 2,771 | 40% (Lula) | – | – | 40% (Silva) | – | – | – | – | – | 20% |
| Datafolha | 21–23 June 2017 | 2,771 | 45% (Lula) | – | – | – | – | – | 32% (Alckmin) | – | – | 24% |
| Datafolha | 21–23 June 2017 | 2,771 | 45% (Lula) | – | – | – | – | – | 34% (Doria) | – | – | 20% |
| Datafolha | 21–23 June 2017 | 2,771 | 45% (Lula) | – | – | – | – | – | – | 32% (Bolsonaro) | – | 22% |
| Datafolha | 21–23 June 2017 | 2,771 | 42% (Lula) | – | – | – | – | – | – | – | 44% (Moro) | 14% |
| Datafolha | 21–23 June 2017 | 2,771 | – | 31% (Gomes) | – | – | – | – | 34% (Alckmin) | – | – | 36% |
| Datafolha | 21–23 June 2017 | 2,771 | – | 34% (Gomes) | – | – | – | – | 32% (Doria) | – | – | 34% |
| Datafolha | 21–23 June 2017 | 2,771 | – | – | – | 49% (Silva) | – | – | – | 27% (Bolsonaro) | – | 25% |
| Vox Populi | 2–4 June 2017 | 2,000 | 50% (Lula) | – | – | 15% (Silva) | – | – | – | – | – | 36% |
| Vox Populi | 2–4 June 2017 | 2,000 | 52% (Lula) | – | – | – | – | – | 11% (Alckmin) | – | – | 37% |
| Vox Populi | 2–4 June 2017 | 2,000 | 51% (Lula) | – | – | – | – | – | 13% (Doria) | – | – | 36% |
| Vox Populi | 2–4 June 2017 | 2,000 | 53% (Lula) | – | – | – | – | – | 5% (Neves) | – | – | 43% |
| Datafolha | 26–27 April 2017 | 2,781 | 38% (Lula) | – | – | 41% (Silva) | – | – | – | – | – | 31% |
| Datafolha | 26–27 April 2017 | 2,781 | 43% (Lula) | – | – | – | – | – | 29% (Alckmin) | – | – | 28% |
| Datafolha | 26–27 April 2017 | 2,781 | 43% (Lula) | – | – | – | – | – | 32% (Doria) | – | – | 25% |
| Datafolha | 26–27 April 2017 | 2,781 | 43% (Lula) | – | – | – | – | – | 27% (Neves) | – | – | 30% |
| Datafolha | 26–27 April 2017 | 2,781 | 43% (Lula) | – | – | – | – | – | – | 31% (Bolsonaro) | – | 26% |
| Datafolha | 26–27 April 2017 | 2,781 | 40% (Lula) | – | – | – | – | – | – | – | 42% (Moro) | 18% |
| Datafolha | 26–27 April 2017 | 2,781 | – | 24% (Gomes) | – | 50% (Silva) | – | – | – | – | – | 26% |
| Datafolha | 26–27 April 2017 | 2,781 | – | 34% (Gomes) | – | – | – | – | 28% (Alckmin) | – | – | 37% |
| Datafolha | 26–27 April 2017 | 2,781 | – | 36% (Gomes) | – | – | – | – | 29% (Doria) | – | – | 35% |
| Datafolha | 26–27 April 2017 | 2,781 | – | 36% (Gomes) | – | – | – | – | 26% (Neves) | – | – | 38% |
| Datafolha | 26–27 April 2017 | 2,781 | – | – | – | 50% (Silva) | – | – | 22% (Alckmin) | – | – | 28% |
| Datafolha | 26–27 April 2017 | 2,781 | – | – | – | 50% (Silva) | – | – | 24% (Doria) | – | – | 26% |
| Datafolha | 26–27 April 2017 | 2,781 | – | – | – | 49% (Silva) | – | – | 21% (Neves) | – | – | 29% |
| Vox Populi | 6–10 April 2017 | 2,000 | 49% (Lula) | – | – | 19% (Silva) | – | – | – | – | – | 32% |
| Vox Populi | 6–10 April 2017 | 2,000 | 51% (Lula) | – | – | – | – | – | 17% (Alckmin) | – | – | 32% |
| Vox Populi | 6–10 April 2017 | 2,000 | 53% (Lula) | – | – | – | – | – | 16% (Doria) | – | – | 31% |
| Vox Populi | 6–10 April 2017 | 2,000 | 50% (Lula) | – | – | – | – | – | 17% (Neves) | – | – | 33% |
| MDA Archived 2019-01-09 at the Wayback Machine | 8–11 February 2017 | 2,002 | 38.9% (Lula) | – | – | 27.4% (Silva) | – | – | – | – | – | 28% |
| MDA Archived 2019-01-09 at the Wayback Machine | 8–11 February 2017 | 2,002 | 42.9% (Lula) | – | – | – | 19.0% (Temer) | – | – | – | – | 38.1% |
| MDA Archived 2019-01-09 at the Wayback Machine | 8–11 February 2017 | 2,002 | 39.7% (Lula) | – | – | – | – | – | 26.5% (Neves) | – | – | 33.8% |
| MDA Archived 2019-01-09 at the Wayback Machine | 8–11 February 2017 | 2,002 | – | – | – | 34.4% (Silva) | 16.8% (Temer) | – | – | – | – | 48.8% |
| MDA Archived 2019-01-09 at the Wayback Machine | 8–11 February 2017 | 2,002 | – | – | – | 28.3% (Silva) | – | – | 28.6% (Neves) | – | – | 43.1% |
| MDA Archived 2019-01-09 at the Wayback Machine | 8–11 February 2017 | 2,002 | – | – | – | – | 13.1% (Temer) | – | 34.1% (Neves) | – | – | 52.8% |
| Vox Populi | 10–14 December 2016 | 2,500 | 42% (Lula) | – | – | 21% (Silva) | – | – | – | – | – | 37% |
| Vox Populi | 10–14 December 2016 | 2,500 | 45% (Lula) | – | – | – | – | – | 20% (Alckmin) | – | – | 35% |
| Vox Populi | 10–14 December 2016 | 2,500 | 43% (Lula) | – | – | – | – | – | 20% (Neves) | – | – | 37% |
| Datafolha | 7–8 December 2016 | 2,828 | 34% (Lula) | – | – | 43% (Silva) | – | – | – | – | – | 23% |
| Datafolha | 7–8 December 2016 | 2,828 | 38% (Lula) | – | – | – | – | – | 34% (Alckmin) | – | – | 28% |
| Datafolha | 7–8 December 2016 | 2,828 | 38% (Lula) | – | – | – | – | – | 34% (Neves) | – | – | 28% |
| Datafolha | 7–8 December 2016 | 2,828 | 37% (Lula) | – | – | – | – | – | 35% (Serra) | – | – | 27% |
| Datafolha | 7–8 December 2016 | 2,828 | – | – | – | 48% (Silva) | – | – | 25% (Alckmin) | – | – | 27% |
| Datafolha | 7–8 December 2016 | 2,828 | – | – | – | 47% (Silva) | – | – | 25% (Neves) | – | – | 28% |
| Datafolha | 7–8 December 2016 | 2,828 | – | – | – | 47% (Silva) | – | – | 27% (Serra) | – | – | 26% |
| MDA Archived 2017-03-14 at the Wayback Machine | 13–16 October 2016 | 2,002 | 33.2% (Lula) | – | – | 35.8% (Silva) | – | – | – | – | – | 31.0% |
| MDA Archived 2017-03-14 at the Wayback Machine | 13–16 October 2016 | 2,002 | 37.3% (Lula) | – | – | – | 28.5% (Temer) | – | – | – | – | 34.2% |
| MDA Archived 2017-03-14 at the Wayback Machine | 13–16 October 2016 | 2,002 | 33.8% (Lula) | – | – | – | – | – | 37.1% (Neves) | – | – | 29.1% |
| MDA Archived 2017-03-14 at the Wayback Machine | 13–16 October 2016 | 2,002 | – | – | – | 38.1% (Silva) | 23.7% (Temer) | – | – | – | – | 38.2% |
| MDA Archived 2017-03-14 at the Wayback Machine | 13–16 October 2016 | 2,002 | – | – | – | 29.5% (Silva) | – | – | 35.4% (Neves) | – | – | 35.1% |
| MDA Archived 2017-03-14 at the Wayback Machine | 13–16 October 2016 | 2,002 | – | – | – | – | 16.4% (Temer) | – | 38.2% (Neves) | – | – | 45.4% |
| Datafolha | 14–15 July 2016 | 2,792 | 32% (Lula) | – | – | 44% (Silva) | – | – | – | – | – | 24% |
| Datafolha | 14–15 July 2016 | 2,792 | 36% (Lula) | – | – | – | – | – | 38% (Alckmin) | – | – | 26% |
| Datafolha | 14–15 July 2016 | 2,792 | 36% (Lula) | – | – | – | – | – | 38% (Neves) | – | – | 26% |
| Datafolha | 14–15 July 2016 | 2,792 | 35% (Lula) | – | – | – | – | – | 40% (Serra) | – | – | 26% |
| Datafolha | 14–15 July 2016 | 2,792 | – | – | – | 47% (Silva) | – | – | 27% (Alckmin) | – | – | 25% |
| Datafolha | 14–15 July 2016 | 2,792 | – | – | – | 46% (Silva) | – | – | 28% (Neves) | – | – | 26% |
| Datafolha | 14–15 July 2016 | 2,792 | – | – | – | 46% (Silva) | – | – | 30% (Serra) | – | – | 25% |
| MDA | 2–5 June 2016 | 2,002 | 28.9% (Lula) | – | – | 35% (Silva) | – | – | – | – | – | 36.1% |
| MDA | 2–5 June 2016 | 2,002 | 31.7% (Lula) | – | – | – | 27.3% (Temer) | – | – | – | – | 41% |
| MDA | 2–5 June 2016 | 2,002 | 29.9% (Lula) | – | – | – | – | – | 34.3% (Neves) | – | – | 35.8% |
| MDA | 2–5 June 2016 | 2,002 | – | – | – | 33.7% (Silva) | 20.9% (Temer) | – | – | – | – | 45.4% |
| MDA | 2–5 June 2016 | 2,002 | – | – | – | 28% (Silva) | – | – | 29.7% (Neves) | – | – | 42.3% |
| MDA | 2–5 June 2016 | 2,002 | – | – | – | – | 15.8% (Temer) | – | 32.3% (Neves) | – | – | 51.9% |
| Paraná Pesquisas | 28 February–2 March 2016 | 2,022 | 22.6% (Lula) | – | – | – | – | – | 53.5% (Neves) | – | – | 24.0% |
| Paraná Pesquisas | 28 February–2 March 2016 | 2,022 | – | – | – | 36.1% (Silva) | – | – | 41.7% (Neves) | – | – | 22.2% |
| MDA Archived 2017-03-02 at the Wayback Machine | 18–21 February 2016 | 2,002 | 28.2% (Lula) | 29.1% (Gomes) | – | – | – | – | – | – | – | 42.7% |
| MDA Archived 2017-03-02 at the Wayback Machine | 18–21 February 2016 | 2,002 | 26.3% (Lula) | – | – | 36.6% (Silva) | – | – | – | – | – | 37.1% |
| MDA Archived 2017-03-02 at the Wayback Machine | 18–21 February 2016 | 2,002 | 27.5% (Lula) | – | – | – | – | – | 40.6% (Neves) | – | – | 31.9% |
| MDA Archived 2017-03-02 at the Wayback Machine | 18–21 February 2016 | 2,002 | – | 16.7% (Gomes) | – | | – | – | 43.1% (Neves) | – | – | 40.2% |
| MDA Archived 2017-03-02 at the Wayback Machine | 18–21 February 2016 | 2,002 | – | – | – | 26.6% (Silva) | – | – | 38.4% (Neves) | – | – | 35.0% |
| MDA Archived 2017-03-02 at the Wayback Machine | 18–21 February 2016 | 2,002 | – | 24.0% (Gomes) | – | 33.0% (Silva) | – | – | – | – | – | 43.0% |
| Datafolha | 25–26 November 2015 | 3,541 | 31% (Lula) | – | – | 52% (Silva) | – | – | – | – | – | 16% |
| Datafolha | 25–26 November 2015 | 3,541 | 34% (Lula) | – | – | – | – | – | 45% (Alckmin) | – | – | 21% |
| Datafolha | 25–26 November 2015 | 3,541 | 32% (Lula) | – | – | – | – | – | 51% (Neves) | – | – | 17% |
| Datafolha | 25–26 November 2015 | 3,541 | – | – | – | 49% (Silva) | – | – | 33% (Alckmin) | – | – | 18% |
| Datafolha | 25–26 November 2015 | 3,541 | – | – | – | 41% (Silva) | – | – | 42% (Neves) | – | – | 16% |
| Paraná Pesquisas | October 2015 | – | 24.3% (Lula) | – | – | – | – | – | 56.7% (Neves) | – | – | 19.0% |
| Paraná Pesquisas | October 2015 | – | – | – | – | 34.1% (Silva) | – | – | 47.7% (Neves) | – | – | 18.2% |
| MDA Archived 2017-04-24 at the Wayback Machine | 20–24 October 2015 | 2,002 | 30.2% (Lula) | – | – | – | – | – | 36.4% (Alckmin) | – | – | 33.4% |
| MDA Archived 2017-04-24 at the Wayback Machine | 20–24 October 2015 | 2,002 | 28.3% (Lula) | – | – | – | – | – | 45.9% (Neves) | – | – | 25.8% |
| MDA Archived 2017-04-24 at the Wayback Machine | 20–24 October 2015 | 2,002 | 30.9% (Lula) | – | – | – | – | – | 35.2% (Serra) | – | – | 33.9% |
| MDA Archived 2017-04-24 at the Wayback Machine | 20–24 October 2015 | 2,002 | – | – | – | 39.7% (Silva) | – | – | 25.9% (Alckmin) | – | – | 34.4% |
| MDA Archived 2017-04-24 at the Wayback Machine | 20–24 October 2015 | 2,002 | – | – | – | 32.9% (Silva) | – | – | 37.7% (Neves) | – | – | 29.4% |
| MDA Archived 2017-04-24 at the Wayback Machine | 20–24 October 2015 | 2,002 | – | – | – | 39.6% (Silva) | – | – | 26.8% (Serra) | – | – | 33.6% |
| Paraná Pesquisas | August 2015 | – | 28.3% (Lula) | – | – | – | – | – | 54.7% (Neves) | – | – | 17.0% |
| Paraná Pesquisas | August 2015 | – | – | – | – | 35.2% (Silva) | – | – | 49.2% (Neves) | – | – | 15.7% |
| IBOPE Archived 2017-11-07 at the Wayback Machine | 15–19 August 2015 | 2,002 | 37% (Lula) | – | – | – | – | – | 41% (Alckmin) | – | – | 23% |
| IBOPE Archived 2017-11-07 at the Wayback Machine | 15–19 August 2015 | 2,002 | 31% (Lula) | – | – | – | – | – | 50% (Neves) | – | – | 19% |
| IBOPE Archived 2017-11-07 at the Wayback Machine | 15–19 August 2015 | 2,002 | 36% (Lula) | – | – | – | – | – | 43% (Serra) | – | – | 21% |
| MDA Archived 2017-04-25 at the Wayback Machine | 12–16 July 2015 | 2,002 | 32.3% (Lula) | – | – | – | – | – | 39.9% (Alckmin) | – | – | 27.8% |
| MDA Archived 2017-04-25 at the Wayback Machine | 12–16 July 2015 | 2,002 | 28.5% (Lula) | – | – | – | – | – | 49.6% (Neves) | – | – | 21.9% |
| MDA Archived 2017-04-25 at the Wayback Machine | 12–16 July 2015 | 2,002 | 31.8% (Lula) | – | – | – | – | – | 40.3% (Serra) | – | – | 27.9% |
| IBOPE Archived 2017-11-07 at the Wayback Machine | 13–17 June 2015 | 2,002 | 39% (Lula) | – | – | – | – | – | 40% (Alckmin) | – | – | 21% |
| IBOPE Archived 2017-11-07 at the Wayback Machine | 13–17 June 2015 | 2,002 | 33% (Lula) | – | – | – | – | – | 48% (Neves) | – | – | 18% |
| Paraná Pesquisas | 26–31 March 2015 | 2,022 | 27.2% (Lula) | – | – | – | – | – | 51.5% (Neves) | – | – | 21.4% |
| Paraná Pesquisas | 26–31 March 2015 | 2,022 | 19.4% (Rousseff) | – | – | – | – | – | 57.2% (Neves) | – | – | 23.4% |
| 2014 election | 26 October 2014 | 112,683,879 | 51.6% (Rousseff) | – | – | – | – | – | 48.4% (Neves) | – | – | 21.1% |