# Opinion polling for the 2016 Spanish general election

In the run up to the 2016 Spanish general election, various organisations carried out opinion polling to gauge voting intention in Spain during the term of the 11th Cortes Generales. Results of such polls are displayed in this article. The date range for these opinion polls is from the previous general election, held on 20 December 2015, to the day the next election was held, on 26 June 2016.
Voting intention estimates refer mainly to a hypothetical Congress of Deputies election. Polls are listed in reverse chronological order, showing the most recent first and using the dates when the survey fieldwork was done, as opposed to the date of publication. Where the fieldwork dates are unknown, the date of publication is given instead. The highest percentage figure in each polling survey is displayed with its background shaded in the leading party's colour. If a tie ensues, this is applied to the figures with the highest percentages. The "Lead" columns on the right shows the percentage-point difference between the parties with the highest percentages in a poll.

## Electoral polling
### Nationwide polling
#### Voting intention estimates

The table below lists nationwide voting intention estimates. Refusals are generally excluded from the party vote percentages, while question wording and the treatment of "don't know" responses and those not intending to vote may vary between polling organisations. When available, seat projections determined by the polling organisations are displayed below (or in place of) the percentages in a smaller font; 176 seats were required for an absolute majority in the Congress of Deputies.

##### Color key

Poll conducted after legal ban on opinion polls  Exit poll
| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | | | | | | | PNV | | | | | Lead |
| 2016 general election | 26 Jun 2016 | — | 66.5 | 33.0 137 | 22.6 85 | | 13.1 32 | | 2.7 9 | 2.0 8 | 1.2 5 | 1.2 0 | 0.8 2 | 0.3 1 | 21.2 71 | 10.4 |
| Sigma Dos/RTVE–FORTA | 26 Jun 2016 | 132,000 | ? | 28.5 117/121 | 22.0 81/85 | | 11.8 26/30 | | 3.1 11/12 | 1.4 5 | 1.3 5/6 | – | 1.0 3/4 | 0.3 1 | 25.6 91/95 | 2.9 |
| NC Report | 25 Jun 2016 | ? | ? | 31.9 128/132 | 22.0 83/88 | | 13.0 30/33 | | 2.4 8/9 | 1.8 7/8 | 1.1 5/6 | – | 0.8 2 | 0.3 1 | 23.7 76/80 | 8.2 |
| GESOP/El Periòdic | 23–25 Jun 2016 | 1,000 | 68–70 | 28.7 116/120 | 21.6 83/87 | | 14.5 37/41 | | – | – | – | – | – | – | 23.9 83/87 | 4.8 |
| GESOP/El Periòdic | 22–24 Jun 2016 | 900 | 70–72 | 28.7 116/120 | 21.6 83/87 | | 14.9 38/42 | | – | – | – | – | – | – | 23.7 83/87 | 5.0 |
| GAD3/ABC | 13–24 Jun 2016 | 4,000 | ? | 30.4 121/124 | 21.8 84/86 | | 13.2 29/32 | | 2.8 10/11 | 1.6 6 | 1.2 5 | – | 0.9 2 | 0.3 0/1 | 24.8 87/89 | 5.6 |
| NC Report | 23 Jun 2016 | ? | ? | 31.7 126/131 | 21.6 82/85 | | 13.1 31/34 | | 2.3 8/9 | 1.7 6/7 | 1.1 5/6 | – | 0.7 2 | 0.3 1 | 24.5 79/84 | 7.2 |
| GESOP/El Periòdic | 21–23 Jun 2016 | 900 | 69–71 | 28.0 114/118 | 21.8 83/87 | | 15.2 40/44 | | – | – | – | – | – | – | 24.0 84/88 | 4.0 |
| GESOP/El Periòdic | 20–22 Jun 2016 | 900 | 69–71 | 28.2 114/118 | 21.7 83/87 | | 15.2 40/44 | | – | – | – | – | – | – | 23.6 83/87 | 4.6 |
| NC Report | 21 Jun 2016 | ? | ? | 31.3 126/131 | 21.4 81/84 | | 13.2 32/35 | | 2.3 8/9 | 1.7 6/7 | 1.1 5/6 | – | 0.7 2 | 0.3 1 | 25.1 81/86 | 6.2 |
| GESOP/El Periòdic | 19–21 Jun 2016 | 900 | 68–70 | 28.5 115/119 | 21.5 82/86 | | 15.2 40/44 | | – | – | – | – | – | – | 23.7 83/87 | 4.8 |
| GESOP/El Periòdic | 18–20 Jun 2016 | 900 | 69–71 | 29.0 116/120 | 21.5 82/86 | | 14.9 38/42 | | – | – | – | – | – | – | 23.7 83/87 | 5.3 |
| GAD3/ABC | 13–20 Jun 2016 | 1,900 | ? | 30.7 122/125 | 21.2 79/82 | | 14.1 36/38 | | ? 9 | ? 6 | ? 5 | – | ? 2 | ? 0/1 | 24.9 84/86 | 5.8 |
| GIPEyOP | 6–20 Jun 2016 | 10,244 | ? | 27.8– 31.2 114/130 | 20.6– 23.3 74/88 | | 13.3– 15.8 33/45 | | 2.2– 3.3 8/11 | 1.6– 2.5 5/9 | 0.8– 1.5 3/6 | – | 0.6– 1.3 1/4 | – | 23.0– 26.2 80/92 | 4.8– 5.0 |
| Redondo & Asociados/Expansión | 19 Jun 2016 | ? | ? | 29.4 121 | 21.5 83 | | 15.1 37 | | ? 9 | ? 7 | ? 5 | – | ? 2 | ? 1 | 24.9 85 | 4.5 |
| JM&A/Público | 19 Jun 2016 | ? | 69.0 | 29.8 119 | 22.1 85 | | 13.9 34 | | 2.4 9 | 2.2 9 | 1.3 6 | – | 0.9 2 | 0.3 1 | 23.9 85 | 5.9 |
| Infortécnica | 19 Jun 2016 | 2,071 | ? | ? 121/129 | ? 84/88 | | ? 40/44 | | – | – | – | – | – | – | ? 71/77 | ? |
| InvyMark/laSexta | 17–19 Jun 2016 | 1,200 | ? | 30.1 | 19.9 | | 13.8 | | – | – | – | – | – | – | 26.1 | 4.0 |
| GESOP/El Periódico | 17–19 Jun 2016 | 900 | 70–72 | 28.3 114/118 | 21.9 83/87 | | 14.9 38/42 | | – | – | – | – | – | – | 24.0 83/87 | 4.3 |
| TNS Demoscopia | 13–19 Jun 2016 | 500 | 70–71 | 29.6 | 21.0 | | 14.8 | | – | – | – | – | – | – | 24.7 | 4.9 |
| Encuestamos | 11–19 Jun 2016 | 2,400 | ? | 30.6 125/129 | 22.0 84/88 | | 13.6 31/35 | | 2.2 6/9 | 2.0 5/8 | 1.2 4/7 | – | 0.8 1/3 | 0.2 0/1 | 23.9 85/89 | 6.7 |
| GESOP/El Periódico | 16–18 Jun 2016 | 900 | 71–73 | 28.8 116/120 | 21.6 81/85 | | 15.4 40/44 | | – | – | – | – | – | – | 23.7 83/87 | 5.1 |
| GESOP/El Periódico | 15–17 Jun 2016 | 900 | 70–72 | 28.3 114/118 | 21.2 80/84 | | 15.6 40/44 | | – | – | – | – | – | – | 24.2 84/88 | 4.1 |
| Celeste-Tel/eldiario.es | 14–17 Jun 2016 | 1,100 | 66.5 | 30.5 123/128 | 21.8 84/86 | | 13.3 32/34 | | 2.4 8 | 1.7 6 | 1.1 5 | 0.8 0 | 0.8 2 | 0.3 1 | 25.3 83/88 | 5.2 |
| A+M/20minutos | 13–17 Jun 2016 | 4,000 | 68.8 | 28.8 118/124 | 21.7 79/82 | | 16.2 41/48 | | 2.3 8/9 | 1.7 6/7 | 1.1 5 | – | 0.8 3 | 0.2 1 | 24.3 78/86 | 4.5 |
| Hamalgama Métrica/La Provincia | 8–17 Jun 2016 | 1,450 | 69.7 | 30.4 125/133 | 21.0 75/85 | | 12.5 30/38 | | 2.1 7/9 | 2.0 6/8 | 1.3 6/7 | – | 0.8 2 | 0.3 1 | 26.2 72/93 | 4.2 |
| Netquest/El Español | 7–17 Jun 2016 | 2,000 | ? | 30.4 125 | 20.4 75 | | 15.2 42 | | – | – | – | – | – | – | 24.0 85 | 6.4 |
| NC Report/La Razón | 5–17 Jun 2016 | 2,000 | 64.6 | 31.1 126/131 | 21.2 80/83 | | 13.2 33/35 | | 2.3 8/9 | 1.7 6/7 | 1.1 5/6 | – | 0.8 2 | 0.3 1 | 25.4 82/87 | 5.7 |
| InvyMark/laSexta | 15–16 Jun 2016 | ? | ? | 29.8 | 20.4 | | 14.1 | | – | – | – | – | – | – | 25.3 | 4.5 |
| Sigma Dos/El Mundo | 14–16 Jun 2016 | 1,500 | ? | 30.5 124/129 | 20.0 73/78 | | 14.1 35/40 | | 2.4 8/9 | 1.8 5/6 | 1.2 4/6 | – | ? 2 | ? 0/1 | 24.8 86/92 | 5.7 |
| GESOP/El Periódico | 14–16 Jun 2016 | 900 | 69–71 | 28.6 114/118 | 20.8 79/83 | | 15.6 40/44 | | – | – | – | – | – | – | 24.1 84/88 | 4.5 |
| GAD3/ABC | 13–16 Jun 2016 | 1,400 | ? | 30.3 121/124 | 21.4 80/83 | | 14.4 38/40 | | 2.3 9 | 1.7 6 | 1.2 5 | – | 0.8 2 | 0.3 0/1 | 24.6 84/85 | 5.7 |
| Celeste-Tel/eldiario.es | 13–16 Jun 2016 | 1,100 | 66.4 | 30.3 123/128 | 21.8 83/86 | | 13.4 32/34 | | 2.4 8 | 1.7 6 | 1.2 5 | 0.8 0 | 0.8 2 | 0.3 1 | 25.1 82/87 | 5.2 |
| MyWord/Cadena SER | 13–16 Jun 2016 | 1,502 | ? | 28.9 118/123 | 20.4 75/80 | | 14.4 38/39 | | – | – | – | – | – | – | 24.8 87/90 | 4.1 |
| DYM/El Confidencial | 14–15 Jun 2016 | 1,011 | 72–73 | 29.0 116/117 | 21.0 81/82 | | 15.2 41 | | ? 9/10 | ? 8 | ? 5/6 | – | ? 2 | ? 1 | 24.9 85/89 | 4.1 |
| Metroscopia/El País | 13–15 Jun 2016 | 1,800 | 70 | 29.0 113/116 | 20.5 78/85 | | 14.5 37/41 | | – | – | – | – | – | – | 26.0 92/95 | 3.0 |
| GESOP/El Periódico | 13–15 Jun 2016 | 900 | 68–70 | 28.3 113/117 | 20.8 79/83 | | 15.4 40/44 | | – | – | – | – | – | – | 24.5 85/89 | 3.8 |
| Advice Strategic/Europa Press | 5–15 Jun 2016 | 2,500 | ? | 29.6 | 20.5 | | 14.8 | | – | – | – | – | – | – | 25.1 | 4.5 |
| Simple Lógica | 1–15 Jun 2016 | 1,226 | 70.9 | 29.2 | 22.5 | | 15.4 | | – | – | – | – | – | – | 23.5 | 5.7 |
| GESOP/El Periódico | 12–14 Jun 2016 | 900 | 69–71 | 27.8 112/116 | 21.1 81/85 | | 15.2 39/43 | | – | – | – | – | – | – | 24.7 85/89 | 3.1 |
| Redondo & Asociados/Tiempo | 9–14 Jun 2016 | 1,000 | ? | 29.2 122 | 21.1 80 | | 15.3 38 | | 2.2 9 | 1.5 7 | 1.1 5 | – | 0.9 2 | 0.3 1 | 24.6 86 | 4.6 |
| Celeste-Tel/eldiario.es | 8–14 Jun 2016 | 1,100 | 66.3 | 29.8 121/126 | 22.0 83/86 | | 13.8 35/36 | | 2.4 8 | 1.7 6/7 | 1.2 6 | 1.0 0 | 0.8 2 | 0.3 1 | 24.9 80/84 | 4.9 |
| JM&A/Público | 13 Jun 2016 | ? | 69.0 | 29.2 118 | 21.1 80 | | 15.1 39 | | 2.4 9 | 2.2 9 | 1.2 5 | – | 0.9 2 | 0.3 1 | 24.4 87 | 4.8 |
| GESOP/El Periódico | 11–13 Jun 2016 | 900 | 70–72 | 28.0 113/117 | 21.0 80/84 | | 14.9 38/42 | | – | – | – | – | – | – | 24.9 86/90 | 3.1 |
| TNS Demoscopia | 6–12 Jun 2016 | 500 | 69–70 | 29.0 | 21.3 | | 15.6 | | – | – | – | – | – | – | 24.5 | 4.5 |
| SYM Consulting/Valencia Plaza | 7–10 Jun 2016 | 1,816 | 72.8 | 29.7 122/125 | 22.9 79/82 | | 13.4 36/38 | | ? 7/8 | ? 6/7 | ? 5 | – | ? 3 | ? 0/1 | 24.4 87/89 | 5.3 |
| NC Report/La Razón | 5–10 Jun 2016 | 1,000 | ? | 30.6 126/130 | 21.3 81/83 | | 13.7 35/37 | | 2.3 8/9 | 1.7 6/7 | 1.1 5/6 | – | 0.8 2 | 0.3 1 | 24.8 81/86 | 5.8 |
| Netquest/El Español | 1–10 Jun 2016 | 2,000 | ? | 28.8 117 | 21.0 78 | | 15.8 45 | | – | – | – | – | – | – | 24.7 87 | 4.1 |
| GAD3/La Vanguardia | 6–9 Jun 2016 | 1,016 | 70 | 29.8 119/122 | 21.4 80/82 | | 14.9 40/41 | | 2.4 8/9 | 1.8 6/7 | 1.2 5 | – | 0.9 2 | 0.3 0/1 | 24.3 85/87 | 5.5 |
| Sondaxe/La Voz de Galicia | 1–9 Jun 2016 | 1,005 | ? | 29.2 121 | 21.4 85 | | 12.9 34 | | 2.4 8 | 1.9 6 | 0.9 3 | – | 0.9 3 | – | 26.1 90 | 3.1 |
| Metroscopia/El País | 7–8 Jun 2016 | 1,200 | 70 | 28.9 | 20.8 | | 15.9 | | – | – | – | – | – | – | 25.4 | 3.5 |
| InvyMark/laSexta | 6–7 Jun 2016 | ? | ? | 30.1 | 20.0 | | 14.4 | | 2.6 | 1.7 | 1.3 | – | – | – | 24.8 | 5.3 |
| GESOP/El Periódico | 3–7 Jun 2016 | 1,816 | ? | 27.9 113/117 | 21.2 80/84 | | 15.5 40/44 | | 2.3 8/9 | 1.6 5/6 | – | – | – | – | 24.5 84/88 | 3.4 |
| Celeste-Tel/eldiario.es | 1–7 Jun 2016 | 1,100 | 65.6 | 29.7 122/125 | 22.1 83/86 | | 14.3 36/37 | | 2.4 7/8 | 1.7 5/6 | 1.2 6 | 1.0 0 | 0.9 2 | 0.3 1 | 24.4 79/85 | 5.3 |
| Encuestamos | 26 May–5 Jun 2016 | 2,000 | ? | 30.4 122/126 | 21.9 84/87 | | 13.6 31/34 | | 2.3 7/9 | 2.0 5/7 | 1.3 4/6 | – | 0.7 1/2 | 0.2 0/1 | 23.6 87/90 | 6.8 |
| Netquest/El Español | 1–3 Jun 2016 | 1,000 | ? | 27.7 113 | 21.6 82 | | 15.4 44 | | – | – | – | – | – | – | 24.3 86 | 3.4 |
| NC Report/La Razón | 30 May–3 Jun 2016 | 2,000 | 63.9 | 30.5 125/130 | 21.4 80/83 | | 13.9 37/39 | | 2.3 8/9 | 1.7 6 | 1.1 5/6 | – | 0.8 2 | 0.3 1 | 24.5 80/84 | 6.0 |
| Sigma Dos/El Mundo | 31 May–2 Jun 2016 | 1,000 | ? | 31.0 130 | 20.3 77 | | 14.0 37 | | 2.6 9 | 2.2 8 | 1.3 6 | – | – | – | 23.7 80 | 7.3 |
| JM&A/Público | 1 Jun 2016 | ? | 69.5 | 28.7 118 | 21.7 83 | | 14.8 38 | | 2.3 8 | 2.5 10 | 1.3 6 | – | 0.9 2 | 0.4 1 | 24.1 84 | 4.6 |
| PSOE | 1 Jun 2016 | 1,000 | ? | 27.9 | 23.8 | | 14.5 | | – | – | – | – | – | – | 22.4 | 4.1 |
| Metroscopia/El País | 31 May–1 Jun 2016 | 1,200 | 68 | 28.5 | 20.2 | | 16.6 | | – | – | – | – | – | – | 25.6 | 2.9 |
| CDC | 31 May 2016 | ? | 69 | ? 117 | ? 79 | | ? 41 | | ? 8 | ? 9 | ? 5 | – | ? 2 | ? 1 | ? 88 | ? |
| NC Report/La Razón | 16–27 May 2016 | 2,000 | ? | 30.5 124/130 | 21.3 80/82 | | 14.2 38/40 | | 2.2 8 | 1.6 5/6 | 1.1 5/6 | – | 0.8 2 | 0.3 1 | 24.7 79/84 | 5.8 |
| GAD3/ABC | 23–26 May 2016 | 1,000 | 70 | 29.6 121 | 21.6 86 | | 14.8 40 | | 2.4 9 | 2.2 8 | 1.2 6 | – | 0.9 2 | 0.3 1 | 22.5 77 | 7.1 |
| Advice Strategic/Europa Press | 19–25 May 2016 | 2,500 | ? | 29.8 | 20.4 | | 14.7 | | – | – | – | – | – | – | 24.4 | 5.4 |
| MyWord/Cadena SER | 20–24 May 2016 | 1,000 | ? | 29.2 | 20.7 | | 14.2 | | – | – | – | – | – | – | 24.8 | 4.4 |
| CIS | 4–22 May 2016 | 17,488 | ? | 29.2 118/121 | 21.2 78/80 | | 14.6 38/39 | | 2.4 8/9 | 1.8 6/7 | 1.2 5 | – | 0.9 3 | 0.2 0 | 25.6 88/92 | 3.6 |
| Encuestamos | 2–22 May 2016 | 2,000 | ? | 30.3 121/125 | 22.9 87/90 | | 13.9 33/36 | | 2.4 7/9 | 2.2 6/8 | 1.1 4/6 | – | 0.6 1/2 | 0.3 1/2 | 23.2 84/87 | 7.1 |
| Celeste-Tel/eldiario.es | 16–20 May 2016 | 1,100 | 65.0 | 29.5 120/122 | 22.0 84/87 | | 14.9 38/41 | | 2.3 7/8 | 1.5 5/6 | 1.2 6 | 1.1 0 | 0.9 2 | 0.3 1 | 24.2 78/82 | 5.3 |
| NC Report/La Razón | 9–20 May 2016 | 2,500 | 63.5 | 30.4 125/130 | 21.1 80/83 | | 14.5 38/40 | | 2.3 8 | 1.5 6 | 1.1 6 | – | 0.8 2 | 0.3 1 | 24.9 77/82 | 5.5 |
| Metroscopia/El País | 17–18 May 2016 | 1,200 | 72 | 28.4 | 20.1 | | 16.4 | | – | – | – | – | – | – | 22.9 | 5.5 |
| Metroscopia/El País | 17–18 May 2016 | 1,200 | 68 | 29.9 | 20.2 | | 15.5 | | – | – | – | – | – | – | 23.2 | 6.7 |
| Metroscopia/El País | 17–18 May 2016 | 1,200 | 63 | 31.5 | 21.1 | | 13.3 | | – | – | – | – | – | – | 23.7 | 7.8 |
| GIPEyOP | 12–18 May 2016 | 2,940 | ? | 29.3 113/120 | 21.9 85/89 | | 13.3 33/36 | | 2.5 9 | 2.1 7/8 | 1.2 5 | – | 0.8 2 | 0.3 1 | 24.3 82/88 | 5.0 |
| Redondo & Asociados/Tiempo | 13–17 May 2016 | 1,000 | 70.1 | 29.4 126 | 21.2 82 | | 15.1 38 | | 2.2 9 | 1.5 7 | 1.1 6 | – | 0.9 2 | 0.3 1 | 24.3 79 | 5.1 |
| JM&A/Público | 13 May 2016 | ? | 69.2 | 27.8 112 | 20.3 73 | | 16.6 52 | | 2.3 8 | 2.3 9 | 1.3 5 | – | 0.9 2 | 0.3 1 | 24.5 88 | 3.3 |
| Netquest/El Español | 10–13 May 2016 | 1,000 | ? | 30.8 123 | 19.7 73 | | 14.7 40 | | – | – | – | – | – | – | 23.7 84 | 7.1 |
| InvyMark/laSexta | 9–13 May 2016 | ? | ? | 29.6 | 20.1 | | 15.1 | | – | – | – | – | – | – | 24.2 | 5.4 |
| NC Report/La Razón | 9–12 May 2016 | 1,500 | ? | 30.2 125/130 | 21.0 80/84 | | 14.7 39/41 | | 2.2 8 | 1.5 6 | 1.1 6 | – | 0.9 2 | 0.3 1 | 24.9 76/81 | 5.3 |
| Simple Lógica | 2–10 May 2016 | 1,035 | 71.7 | 29.9 | 21.5 | 14.2 | 17.7 | 7.9 | – | – | – | – | – | – | – | 8.4 |
| NC Report/La Razón | 25 Apr–7 May 2016 | 2,000 | 63.6 | 30.2 126/130 | 20.8 80/84 | | 15.0 39/42 | | 2.1 8 | 1.5 6 | 1.2 6 | – | 0.8 2 | 0.3 1 | 24.7 75/80 | 5.5 |
| Celeste-Tel/eldiario.es | 2–6 May 2016 | 1,100 | 64.5 | 29.2 120/123 | 22.4 85/89 | | 15.5 39/41 | | 2.4 8/9 | 1.5 5/6 | 1.2 5 | 1.0 0 | 0.9 2 | 0.3 1 | 24.2 75/80 | 5.0 |
| Celeste-Tel/eldiario.es | 2–6 May 2016 | 1,100 | 64.5 | 29.1 124/126 | 21.9 88/90 | 19.8 63/67 | 15.4 41/43 | 5.3 5/7 | 2.4 8/9 | 1.5 5/6 | 1.2 5/6 | 0.9 0 | 0.9 2 | 0.3 1 | – | 7.2 |
| Encuestamos | 23 Apr–2 May 2016 | 1,800 | ? | 30.0 129/132 | 22.8 91/93 | 19.1 58/61 | 14.1 40/41 | 4.8 4/5 | 2.4 9/10 | 2.3 8/9 | 1.2 5/6 | – | 0.6 1/2 | 0.3 1/2 | – | 7.2 |
| NC Report/La Razón | 18–30 Apr 2016 | 2,000 | 63.9 | 29.9 127/132 | 20.4 82/85 | 20.9 67/70 | 15.0 41/45 | 5.0 4/6 | – | – | – | – | – | – | – | 9.0 |
| GAD3/ABC | 26–29 Apr 2016 | 800 | 69 | 29.3 129 | 22.6 95 | 17.0 50 | 13.9 41 | 5.3 8 | 2.1 8 | 1.8 8 | 1.3 6 | – | 0.9 4 | 0.4 1 | – | 6.7 |
| InvyMark/laSexta | 25–29 Apr 2016 | 1,200 | ? | 28.7 | 19.4 | 20.7 | 15.4 | 4.8 | – | – | – | – | – | – | – | 8.0 |
| Metroscopia/El País | 26–28 Apr 2016 | 1,200 | 70 | 29.0 | 20.3 | 18.1 | 16.9 | 6.6 | – | – | – | – | – | – | – | 8.7 |
| NC Report/La Razón | 18–23 Apr 2016 | 2,000 | 63.9 | 29.9 127/132 | 20.5 82/85 | 21.2 68/71 | 15.2 41/46 | 4.6 3/5 | – | – | – | – | – | – | – | 8.7 |
| Netquest/El Español | 18–22 Apr 2016 | 1,000 | ? | 27.3 | 20.2 | 18.7 | 17.0 | 5.8 | – | – | – | – | – | – | – | 7.1 |
| Sigma Dos/El Mundo | 18–22 Apr 2016 | 800 | ? | 29.5 126 | 22.2 91 | 18.6 58 | 14.7 45 | 4.5 6 | 2.6 9 | 1.9 6 | 1.1 6 | – | – | – | – | 7.3 |
| Encuestamos | 1–20 Apr 2016 | 2,000 | ? | 30.3 131/135 | 23.0 92/94 | 19.4 60/63 | 14.2 40/42 | 4.4 3/5 | 2.6 9/10 | 2.2 7/8 | 1.1 5/6 | – | 0.6 1/2 | 0.3 1/2 | – | 7.3 |
| NC Report/La Razón | 12–16 Apr 2016 | 2,400 | 64.2 | 29.8 128/131 | 20.7 83/85 | 20.9 67/71 | 15.4 42/47 | 4.5 3/5 | 2.2 8 | 1.5 6 | 1.2 6 | – | 0.7 2 | 0.3 1 | – | 8.9 |
| InvyMark/laSexta | 11–15 Apr 2016 | ? | ? | 28.6 | 20.4 | 19.2 | 15.8 | 5.4 | – | – | – | – | – | – | – | 8.2 |
| TNS Demoscopia | 12–14 Apr 2016 | 1,000 | 68–69 | 29.4 | 22.3 | 17.5 | 15.8 | 6.0 | – | – | – | – | – | – | – | 7.1 |
| NC Report | 7–14 Apr 2016 | 955 | ? | 30.7 | 21.2 | 21.9 | 14.5 | 4.9 | – | – | – | – | – | – | – | 8.8 |
| JM&A/Público | 13 Apr 2016 | ? | 66.9 | 27.9 115 | 19.8 77 | 20.9 69 | 17.0 60 | 3.6 2 | 2.4 9 | 2.4 9 | 1.3 6 | – | 0.9 2 | 0.4 1 | – | 7.0 |
| Simple Lógica | 4–12 Apr 2016 | 1,047 | 73.8 | 28.3 | 20.6 | 16.9 | 17.7 | 6.9 | – | – | – | – | – | – | – | 7.7 |
| IMOP/Llorente & Cuenca | 6–10 Apr 2016 | 1,027 | 69 | 28.8 123 | 22.2 90 | 15.6 48 | 16.6 53 | 7.5 12 | 2.2 9 | 1.7 6 | 1.1 6 | – | 0.7 2 | ? 1 | – | 6.6 |
| Advice Strategic/Europa Press | 4–10 Apr 2016 | 2,500 | ? | 29.1 | 21.7 | 17.4 | 16.0 | 5.5 | 2.3 | 2.0 | 1.2 | – | – | – | – | 7.4 |
| CIS | 1–10 Apr 2016 | 2,490 | ? | 27.4 119 | 21.6 90 | 17.7 56 | 15.6 52 | 5.4 8 | 2.5 9 | 1.9 7 | 1.0 6 | – | 0.7 2 | 0.4 1 | – | 5.8 |
| NC Report/La Razón | 4–9 Apr 2016 | 2,300 | ? | 29.6 127/129 | 21.0 84/86 | 20.4 64/69 | 15.5 43/48 | 4.4 2/4 | 2.3 8/9 | 1.5 6/7 | 1.3 6 | – | 0.7 2 | 0.3 1 | – | 8.6 |
| GAD3/ABC | 6–7 Apr 2016 | 800 | 68 | 29.2 127 | 23.3 95 | 15.5 46 | 14.4 45 | 6.7 11 | 2.3 9 | 2.0 8 | 1.1 6 | – | 0.8 3 | 0.2 0 | – | 5.9 |
| Metroscopia | 5–6 Apr 2016 | 1,200 | 70 | 29.0 | 20.1 | 17.0 | 17.7 | 6.7 | – | – | – | – | – | – | – | 8.9 |
| DYM/El Confidencial | 30 Mar–6 Apr 2016 | 1,036 | ? | 29.2 | 20.7 | 19.6 | 15.2 | 5.9 | – | – | – | – | – | – | – | 8.5 |
| Celeste-Tel/eldiario.es | 1–5 Apr 2016 | 1,100 | 64.9 | 29.1 123/125 | 22.2 89/90 | 19.4 61/66 | 15.9 44/47 | 4.5 3/5 | 2.7 9/10 | 1.8 7 | 1.1 5/6 | 1.0 0 | 0.7 2 | 0.3 1 | – | 6.9 |
| Estudio de Sociología Consultores | 28 Mar–5 Apr 2016 | 2,300 | ? | 29.2 128 | 23.7 92 | 17.5 58 | 16.1 45 | 4.6 2 | 3.0 11 | 1.7 5 | – | – | – | – | – | 4.5 |
| Redondo & Asociados/Tiempo | 28 Mar–4 Apr 2016 | 1,000 | 69.7 | 29.1 126 | 21.8 87 | 19.1 61 | 15.7 47 | 4.9 4 | 2.4 9 | 1.7 7 | 1.3 6 | – | 0.7 2 | 0.3 1 | – | 7.3 |
| NC Report/La Razón | 22 Mar–2 Apr 2016 | 1,800 | ? | 29.4 126/128 | 21.8 86/88 | 19.2 62/64 | 15.5 44/49 | 4.6 2/4 | 2.4 9 | 1.6 7 | 1.3 6 | – | 0.7 2 | 0.3 1 | – | 7.6 |
| InvyMark/laSexta | 28 Mar–1 Apr 2016 | 1,200 | ? | 28.6 | 21.6 | 19.9 | 15.2 | 4.1 | – | – | – | – | – | – | – | 7.0 |
| Sigma Dos/El Mundo | 28–31 Mar 2016 | 800 | ? | 30.2 128 | 22.0 90 | 16.7 49 | 16.2 52 | 4.5 6 | 2.3 8 | 2.1 7 | 1.1 6 | – | – | – | – | 8.2 |
| Metroscopia/El País | 28–30 Mar 2016 | 1,200 | 73 | 27.7 | 21.0 | 15.9 | 18.8 | 6.9 | – | – | – | – | – | – | – | 6.7 |
| Netquest/El Español | 23–30 Mar 2016 | 1,002 | ? | 27.5 | 19.3 | 17.3 | 16.9 | 7.3 | – | – | – | – | – | – | – | 8.2 |
| NC Report/La Razón | 22–27 Mar 2016 | 900 | ? | 29.4 126/128 | 22.0 87/89 | 19.4 63/65 | 15.3 43/48 | 4.6 2/4 | 2.4 9 | 1.7 7 | 1.3 6 | – | 0.7 2 | 0.3 1 | – | 7.4 |
| Encuestamos | 1–20 Mar 2016 | 2,000 | ? | 30.1 128/131 | 23.2 93/95 | 19.6 61/64 | 14.2 40/42 | 4.1 2/4 | 2.6 9/10 | 2.2 7/8 | 1.2 6/7 | – | 0.6 1/2 | 0.3 1/2 | – | 6.9 |
| NC Report/La Razón | 13–17 Mar 2016 | 1,000 | 64.7 | 29.3 124/128 | 22.1 87/90 | 19.5 62/66 | 15.1 44/48 | 4.4 2/4 | 2.3 9 | 1.8 7 | 1.2 6 | – | 0.8 2 | 0.4 1 | – | 7.2 |
| MyWord/Cadena SER | 10–14 Mar 2016 | 1,004 | ? | 27.0 | 20.9 | 15.9 | 18.0 | 7.1 | – | – | – | – | – | – | – | 6.1 |
| InvyMark/laSexta | 7–11 Mar 2016 | ? | ? | 28.5 | 20.8 | 21.5 | 14.3 | 4.3 | – | – | – | – | – | – | – | 7.0 |
| NC Report/La Razón | 1–11 Mar 2016 | 2,300 | ? | 29.3 126/128 | 22.0 87/90 | 19.8 63/67 | 15.1 42/47 | 4.4 2/4 | 2.4 9 | 1.8 7 | 1.2 6 | – | 0.8 2 | 0.3 1 | – | 7.3 |
| GAD3/ABC | 7–10 Mar 2016 | 800 | 67 | 28.2 123 | 24.2 98 | 18.7 60 | 14.1 42 | 3.2 1 | 2.9 10 | 1.8 7 | 1.2 6 | – | 0.7 2 | 0.3 1 | – | 4.0 |
| Metroscopia/El País | 8–9 Mar 2016 | 1,200 | 75 | 26.0 | 23.1 | 16.8 | 19.5 | 5.4 | – | – | – | – | – | – | – | 2.9 |
| Sondaxe/La Voz de Galicia | 5–9 Mar 2016 | 1,002 | ? | 28.6 124 | 22.0 89 | 19.1 60 | 15.6 48 | 4.2 4 | 2.5 8 | 2.1 8 | 1.2 6 | – | 0.8 2 | 0.3 1 | – | 6.6 |
| Simple Lógica | 1–9 Mar 2016 | 1,206 | 72.5 | 26.2 | 21.6 | 18.3 | 17.1 | 7.9 | – | – | – | – | – | – | – | 4.6 |
| GESOP/El Periódico | 5–8 Mar 2016 | 1,000 | ? | 26.4 107/110 | 21.9 88/91 | 18.1 58/61 | 17.8 59/62 | 5.9 7/9 | 2.4 9/10 | 1.5 6/7 | – | – | – | – | – | 4.5 |
| Celeste-Tel/eldiario.es | 2–5 Mar 2016 | 1,100 | 66.1 | 28.6 120/124 | 22.6 91/94 | 19.6 63/67 | 15.7 42/45 | 4.6 3/5 | 2.5 9 | 1.9 7 | 1.1 5 | 1.0 0 | 0.8 2 | 0.3 1 | – | 6.0 |
| NC Report/La Razón | 1–4 Mar 2016 | 1,400 | 65.0 | 29.2 125/128 | 21.8 87/90 | 20.2 64/67 | 14.9 42/46 | 4.2 2/4 | 2.4 9 | 1.9 7/8 | 1.2 6 | – | 0.8 2 | 0.4 1 | – | 7.4 |
| JM&A/Público | 3 Mar 2016 | ? | 67.3 | 26.5 112 | 20.2 78 | 20.9 69 | 16.9 61 | 3.3 1 | 2.6 9 | 2.4 9 | 1.3 6 | – | 1.0 4 | 0.4 1 | – | 5.6 |
| InvyMark/laSexta | 22–26 Feb 2016 | 1,200 | ? | 26.8 | 20.3 | 22.1 | 15.8 | 4.5 | – | – | – | – | – | – | – | 4.7 |
| DYM/El Confidencial | 19–23 Feb 2016 | 1,071 | ? | 25.6 | 22.1 | 19.8 | 17.6 | 5.4 | – | – | – | – | – | – | – | 3.5 |
| InvyMark/laSexta | 15–19 Feb 2016 | ? | ? | 26.4 | 21.8 | 20.7 | 16.2 | 4.2 | – | – | – | – | – | – | – | 4.6 |
| Sigma Dos/El Mundo | 16–18 Feb 2016 | 1,000 | ? | 27.8 119 | 23.1 93 | 18.8 60 | 15.3 50 | 4.0 3 | 2.4 9 | 2.1 7 | 1.1 6 | – | – | – | – | 4.7 |
| NC Report/La Razón | 10–18 Feb 2016 | 1,400 | 65.3 | 28.9 125/127 | 21.4 87/89 | 21.1 68/72 | 14.2 41/42 | 3.4 1/2 | 2.5 9 | 2.0 7/8 | 1.2 6 | – | 0.8 2 | 0.3 1 | – | 7.5 |
| Encuestamos | 1–17 Feb 2016 | 1,800 | ? | 27.7 117/119 | 24.2 98/100 | 20.5 66/68 | 13.9 38/40 | 3.4 1/2 | 2.5 9/10 | 2.1 7/8 | 1.1 6 | – | 0.9 2/3 | 0.3 1/2 | – | 3.5 |
| GIPEyOP | 7–16 Feb 2016 | 1,960 | ? | 27.1 | 22.3 | 22.3 | 14.9 | 3.2 | 2.4 | 2.4 | 1.2 | – | 0.7 | – | – | 4.8 |
| GAD3/ABC | 8–11 Feb 2016 | 800 | 68 | 27.9 119 | 20.8 84 | 21.4 75 | 14.9 44 | 3.3 1 | 2.6 10 | 1.9 8 | 1.4 6 | – | 0.7 2 | 0.3 1 | – | 6.5 |
| Estudio de Sociología Consultores | 1–10 Feb 2016 | 2,100 | ? | 29.0 125 | 22.6 94 | 20.9 69 | 14.0 33 | 4.0 2 | 3.4 9 | 1.8 8 | 1.1 6 | – | – | – | – | 6.4 |
| JM&A/Público | 7 Feb 2016 | ? | 70.5 | 27.8 118 | 20.4 84 | 21.2 75 | 14.9 44 | 3.8 2 | 2.6 9 | 2.3 9 | 1.2 6 | – | 0.9 2 | 0.3 1 | – | 6.6 |
| Simple Lógica | 1–5 Feb 2016 | 1,048 | 75.6 | 26.9 | 21.7 | 20.3 | 18.9 | 5.1 | – | – | – | – | – | – | – | 5.2 |
| Celeste-Tel/eldiario.es | 1–5 Feb 2016 | 1,100 | 66.6 | 28.5 120/124 | 22.4 89/92 | 20.4 65/69 | 15.1 41/46 | 3.7 2 | 2.7 9/10 | 2.0 7/8 | 1.2 5/6 | 1.0 0 | 0.8 2 | 0.4 1 | – | 6.1 |
| InvyMark/laSexta | 1–5 Feb 2016 | ? | ? | 27.8 | 21.1 | 21.6 | 15.1 | 3.8 | – | – | – | – | – | – | – | 6.2 |
| Metroscopia/El País | 3–4 Feb 2016 | 1,000 | 73 | 24.0 | 23.3 | 19.9 | 18.5 | 4.3 | – | – | – | – | – | – | – | 0.7 |
| GAD3/ABC | 15–21 Jan 2016 | 802 | 70 | 30.1 131 | 21.3 89 | 20.0 65 | 13.4 38 | 2.9 1 | 2.4 9 | 2.1 8 | 1.1 5 | – | 1.1 3 | 0.3 1 | – | 8.8 |
| NC Report/La Razón | 4–21 Jan 2016 | 1,900 | 65.6 | 30.7 130/132 | 21.1 86/88 | 21.9 70/73 | 12.0 30/33 | 3.4 1/2 | 2.4 9 | 2.2 7/8 | 1.2 6 | – | 0.8 2 | 0.3 1 | – | 8.8 |
| MyWord/Cadena SER | 15–19 Jan 2016 | 1,000 | ? | 28.0 | 21.3 | 20.3 | 14.4 | 4.7 | – | – | – | – | – | – | – | 6.7 |
| Redondo & Asociados | 16 Jan 2016 | ? | ? | 30.5 130 | 20.7 79 | 22.8 82 | 10.9 31 | – | – | – | – | – | – | – | – | 7.7 |
| InvyMark/laSexta | 11–15 Jan 2016 | ? | ? | 30.8 | 20.8 | 21.6 | 12.6 | 3.5 | – | – | – | – | – | – | – | 9.2 |
| Celeste-Tel/eldiario.es | 4–15 Jan 2016 | 1,100 | 67.5 | 30.2 128/130 | 21.9 87/90 | 22.1 68/73 | 12.6 33/35 | 3.3 2 | 2.5 9 | 2.1 7/8 | 1.1 5/6 | 1.0 0 | 0.9 2 | 0.3 1 | – | 8.1 |
| NC Report | 4–15 Jan 2016 | 955 | ? | 30.5 | 22.1 | 20.7 | 13.4 | 3.6 | – | – | – | – | – | – | – | 8.4 |
| Encuestamos | 1–15 Jan 2016 | 1,800 | ? | 33.2 140/145 | 22.2 90/92 | 21.4 74/76 | 10.9 17/21 | 2.9 1 | 2.5 10/11 | 2.0 5/7 | 1.1 5/6 | – | 0.8 2 | 0.3 1 | – | 11.0 |
| Metroscopia/El País | 12–14 Jan 2016 | 1,200 | 76.4 | 29.0 | 21.1 | 22.5 | 16.6 | 3.2 | – | – | – | – | – | – | – | 6.5 |
| Estudio de Sociología Consultores | 2–14 Jan 2016 | 2,200 | ? | 32.4 137 | 22.4 90 | 20.5 65 | 13.2 30 | 3.9 2 | – | – | – | – | – | – | – | 10.0 |
| Simple Lógica | 4–12 Jan 2016 | 1,050 | 77.1 | 30.0 | 20.4 | 21.3 | 14.7 | 4.8 | – | – | – | – | – | – | – | 8.7 |
| IMOP/Llorente & Cuenca | 9–11 Jan 2016 | 1,000 | 69 | 31.4 136 | 23.5 96 | 19.5 63 | 11.8 29 | 3.4 1 | 2.3 9 | 1.8 7 | 1.2 6 | – | 0.9 2 | ? 1 | – | 7.9 |
| CIS | 2–11 Jan 2016 | 2,496 | ? | 28.8 123 | 20.5 83 | 21.9 79 | 13.3 39 | 3.7 2 | 2.8 11 | 1.7 7 | 1.3 6 | – | 1.0 2 | 0.0 0 | – | 6.9 |
| 2015 general election | 20 Dec 2015 | — | 69.7 | 28.7 123 | 22.0 90 | 20.7 69 | 13.9 40 | 3.7 2 | 2.4 9 | 2.2 8 | 1.2 6 | 0.9 0 | 0.9 2 | 0.3 1 | – | 6.7 |

#### Voting preferences

The table below lists raw, unweighted voting preferences.

##### Color key

Poll conducted after legal ban on opinion polls
| Polling firm/Commissioner | Fieldwork date | Sample size | | | | | | | | PNV | | | | ? | N | Lead |
| 2016 general election | 26 Jun 2016 | — | 22.9 | 15.7 | | 9.0 | | 1.8 | 1.4 | 0.8 | 0.5 | 0.2 | 14.6 | — | 30.2 | 7.2 |
| GESOP/El Periòdic | 23–25 Jun 2016 | 1,000 | 18.0 | 14.9 | | 9.6 | | 1.9 | 1.2 | 1.0 | 0.8 | 0.0 | 20.2 | 24.4 | 3.9 | 2.2 |
| GESOP/El Periòdic | 22–24 Jun 2016 | 900 | 20.3 | 16.1 | | 10.2 | | 2.1 | 1.3 | 0.9 | 1.0 | 0.1 | 19.7 | 20.1 | 4.1 | 0.6 |
| GESOP/El Periòdic | 21–23 Jun 2016 | 900 | 20.1 | 16.1 | | 11.9 | | 2.1 | 1.2 | 1.1 | 0.6 | 0.1 | 19.7 | 18.7 | 4.7 | 0.4 |
| GESOP/El Periòdic | 20–22 Jun 2016 | 900 | 21.3 | 14.8 | | 12.6 | | 2.4 | 1.2 | 0.9 | 0.9 | 0.3 | 19.2 | 17.9 | 4.0 | 2.2 |
| GESOP/El Periòdic | 19–21 Jun 2016 | 900 | 19.6 | 14.8 | | 12.2 | | 2.4 | 1.1 | 0.9 | 0.8 | 0.2 | 19.4 | 19.4 | 4.6 | 0.2 |
| GESOP/El Periòdic | 18–20 Jun 2016 | 900 | 19.3 | 15.8 | | 11.2 | | 2.7 | 0.9 | 0.9 | 0.8 | 0.2 | 18.7 | 20.2 | 4.6 | 0.6 |
| GESOP/El Periódico | 17–19 Jun 2016 | 900 | 19.2 | 16.4 | | 11.1 | | 2.7 | 0.9 | 1.0 | 0.4 | 0.0 | 18.7 | 21.2 | 5.0 | 0.5 |
| GESOP/El Periódico | 16–18 Jun 2016 | 900 | 19.9 | 16.1 | | 12.2 | | 2.3 | 0.7 | 0.9 | 0.4 | 0.0 | 19.8 | 19.7 | 4.8 | 0.1 |
| GESOP/El Periódico | 15–17 Jun 2016 | 900 | 20.3 | 14.8 | | 11.9 | | 1.7 | 0.8 | 0.7 | 0.3 | 0.0 | 20.4 | 20.4 | 4.9 | 0.1 |
| GESOP/El Periódico | 14–16 Jun 2016 | 900 | 18.4 | 15.1 | | 11.1 | | 2.2 | 0.9 | 0.7 | 0.2 | 0.0 | 19.9 | 20.9 | 5.7 | 1.5 |
| MyWord/Cadena SER | 13–16 Jun 2016 | 1,502 | 14.2 | 11.1 | | 13.0 | | 2.6 | 1.8 | 0.6 | 0.2 | 0.2 | 25.9 | 19.3 | 3.8 | 11.7 |
| DYM/El Confidencial | 14–15 Jun 2016 | 1,011 | 13.9 | 11.6 | | 10.3 | | – | – | – | – | – | 18.0 | 32.5 | 6.9 | 4.1 |
| Metroscopia/El País | 13–15 Jun 2016 | 1,800 | 19.4 | 17.9 | | 12.7 | | – | – | – | – | – | 25.2 | 17.2 | 17.2 | 5.8 |
| GESOP/El Periódico | 13–15 Jun 2016 | 900 | 19.0 | 13.7 | | 10.0 | | 2.6 | 1.1 | 0.4 | 0.1 | 0.0 | 19.1 | 23.6 | 5.8 | 0.1 |
| Simple Lógica | 1–15 Jun 2016 | 1,226 | 17.9 | 12.2 | | 10.8 | | – | – | – | – | – | 14.1 | 24.3 | 15.3 | 3.8 |
| GESOP/El Periódico | 12–14 Jun 2016 | 900 | 18.6 | 14.0 | | 9.6 | | 2.7 | 1.1 | 0.7 | 0.2 | 0.0 | 19.1 | 25.1 | 5.0 | 0.5 |
| GESOP/El Periódico | 11–13 Jun 2016 | 900 | 20.1 | 13.6 | | 9.2 | | 1.8 | 1.3 | 0.7 | 0.3 | 0.0 | 19.8 | 24.2 | 5.4 | 0.3 |
| Metroscopia/El País | 7–8 Jun 2016 | 1,200 | 20.8 | 17.7 | | 15.2 | | – | – | – | – | – | 21.0 | 16.5 | 16.5 | 0.2 |
| GESOP/El Periódico | 3–7 Jun 2016 | 1,816 | 21.2 | 14.5 | | 13.8 | | 2.1 | 1.2 | 0.6 | 0.4 | – | 21.1 | 15.2 | 4.6 | 0.1 |
| Metroscopia/El País | 31 May–1 Jun 2016 | 1,200 | 18.9 | 16.0 | | 14.0 | | – | – | – | – | – | 22.5 | 22.2 | 22.2 | 3.6 |
| MyWord/Cadena SER | 20–24 May 2016 | 1,000 | 16.2 | 12.5 | | 13.1 | | 4.4 | 1.2 | 1.7 | 0.3 | 0.1 | 22.0 | 15.1 | 4.0 | 5.8 |
| CIS | 4–22 May 2016 | 17,488 | 16.8 | 14.6 | | 8.5 | | 1.8 | 1.0 | 0.8 | 0.5 | 0.1 | 18.2 | 22.0 | 11.0 | 1.4 |
| Metroscopia/El País | 17–18 May 2016 | 1,200 | 18.1 | 16.1 | | 12.2 | | – | – | – | – | – | 21.0 | 23.5 | 23.5 | 2.9 |
| Simple Lógica | 2–10 May 2016 | 1,035 | 16.1 | 12.6 | 10.4 | 13.7 | 7.4 | – | – | – | – | – | – | 21.9 | 14.2 | 2.4 |
| GAD3/ABC | 26–29 Apr 2016 | 800 | 23.4 | 18.2 | 12.5 | 12.1 | 4.1 | 1.1 | 1.3 | 1.0 | 0.7 | 0.2 | – | – | – | 5.2 |
| Metroscopia/El País | 26–28 Apr 2016 | 1,200 | 21.2 | 19.1 | 16.3 | 14.8 | 6.6 | – | – | – | – | – | – | 15.3 | 15.3 | 2.1 |
| Netquest/El Español | 18–22 Apr 2016 | 1,000 | 15.0 | 13.0 | 19.4 | 13.4 | 6.9 | – | – | – | – | – | – | – | – | 4.4 |
| Simple Lógica | 4–12 Apr 2016 | 1,047 | 14.9 | 13.5 | 11.8 | 13.1 | 6.5 | – | – | – | – | – | – | 19.8 | 15.6 | 1.4 |
| CIS | 1–10 Apr 2016 | 2,490 | 17.3 | 15.3 | 12.6 | 10.8 | 4.5 | 1.7 | 1.3 | 0.8 | 0.4 | 0.2 | – | 18.9 | 11.5 | 2.0 |
| GAD3/ABC | 6–7 Apr 2016 | 800 | 23.6 | 19.7 | 10.6 | 12.3 | 5.4 | 1.6 | 1.5 | 0.8 | 0.5 | 0.1 | – | – | – | 3.9 |
| Netquest/El Español | 23–30 Mar 2016 | 1,002 | 17.7 | 13.8 | 14.6 | 13.2 | 6.9 | – | – | – | – | – | – | – | – | 3.1 |
| MyWord/Cadena SER | 10–14 Mar 2016 | 1,004 | 12.1 | 13.1 | 15.5 | 13.4 | 8.1 | 3.6 | 0.9 | 0.3 | 0.2 | 0.1 | – | 18.9 | 5.3 | 2.1 |
| GAD3/ABC | 7–10 Mar 2016 | 800 | 23.4 | 20.8 | 12.3 | 12.6 | 3.0 | 2.4 | 1.2 | 0.9 | 0.2 | 0.2 | – | – | – | 2.6 |
| Metroscopia/El País | 8–9 Mar 2016 | 1,200 | 18.9 | 18.1 | 14.5 | 17.7 | 5.6 | – | – | – | – | – | – | 18.7 | 18.7 | 0.8 |
| Simple Lógica | 1–9 Mar 2016 | 1,206 | 15.1 | 13.8 | 11.7 | 11.4 | 8.1 | – | – | – | – | – | – | 22.2 | 12.3 | 1.3 |
| GESOP/El Periódico | 5–8 Mar 2016 | 1,000 | 20.5 | 18.1 | 15.5 | 17.8 | 7.3 | 2.5 | 1.2 | 0.6 | 0.5 | – | – | 9.0 | 3.3 | 2.3 |
| GAD3/ABC | 8–11 Feb 2016 | 800 | 21.4 | 16.7 | 15.8 | 14.1 | 2.7 | 1.4 | 1.3 | 0.8 | 0.3 | 0.1 | – | – | – | 4.7 |
| Simple Lógica | 1–5 Feb 2016 | 1,048 | 16.9 | 13.7 | 14.6 | 15.6 | 4.8 | – | – | – | – | – | – | 15.9 | 14.1 | 1.3 |
| Metroscopia/El País | 3–4 Feb 2016 | 1,000 | 17.2 | 17.8 | 18.0 | 14.5 | 4.7 | – | – | – | – | – | – | 20.4 | 20.4 | 0.2 |
| GAD3/ABC | 15–21 Jan 2016 | 802 | 24.4 | 17.6 | 15.1 | 10.1 | 2.2 | 1.5 | 1.1 | 0.8 | 1.0 | 0.3 | – | – | – | 6.8 |
| MyWord/Cadena SER | 15–19 Jan 2016 | 1,000 | 13.4 | 11.7 | 22.3 | 13.3 | 4.3 | 3.5 | 1.5 | 0.1 | 0.2 | 0.1 | – | 19.0 | 3.2 | 8.9 |
| Metroscopia/El País | 12–14 Jan 2016 | 1,200 | 22.2 | 17.6 | 21.6 | 12.6 | 4.0 | – | – | – | – | – | – | 16.7 | 16.7 | 0.6 |
| Simple Lógica | 4–12 Jan 2016 | 1,050 | 19.1 | 10.9 | 17.7 | 11.4 | 5.0 | – | – | – | – | – | – | 19.4 | 10.9 | 1.4 |
| CIS | 2–11 Jan 2016 | 2,496 | 18.2 | 14.5 | 18.4 | 8.3 | 3.1 | 2.6 | 1.2 | 0.8 | 0.9 | 0.0 | – | 17.6 | 10.1 | 0.2 |
| 2015 general election | 20 Dec 2015 | — | 20.8 | 16.0 | 15.0 | 10.1 | 2.7 | 1.7 | 1.6 | 0.9 | 0.6 | 0.2 | – | — | 26.8 | 4.8 |

#### Victory likelihood

The table below lists opinion polling on the perceived likelihood of victory for each party in the event of a general election taking place.
| Polling firm/Commissioner | Fieldwork date | Sample size | | | | | | Other/ None | ? | Lead |
| TNS Demoscopia | 13–19 Jun 2016 | 500 | 70.7 | 4.7 | – | 1.3 | 2.5 | 1.8 | 19.0 | 66.0 |
| TNS Demoscopia | 6–12 Jun 2016 | 500 | 68.6 | 4.6 | – | 1.4 | 3.4 | 1.8 | 20.2 | 64.0 |
| GESOP/El Periódico | 3–7 Jun 2016 | 1,816 | 73.7 | 6.3 | – | 1.3 | 4.2 | 0.0 | 14.3 | 67.4 |
| Metroscopia/El País | 31 May–1 Jun 2016 | 1,200 | 77.0 | 7.0 | – | 2.0 | 6.0 | 8.0 | 8.0 | 70.0 |
| CIS | 4–22 May 2016 | 17,488 | 67.4 | 6.7 | – | 0.9 | 4.0 | 1.5 | 19.5 | 60.7 |
| GAD3/ABC | 26–29 Apr 2016 | 800 | 71.4 | 9.2 | 3.6 | 4.7 | – | 11.1 | 11.1 | 62.2 |
| GAD3/ABC | 6–7 Apr 2016 | 800 | 68.6 | 13.0 | 4.4 | 4.3 | – | 9.7 | 9.7 | 55.6 |
| GAD3/ABC | 7–10 Mar 2016 | 800 | 68.4 | 12.2 | 6.6 | 2.7 | – | 10.1 | 10.1 | 56.2 |
| GESOP/El Periódico | 5–8 Mar 2016 | 1,000 | 66.6 | 11.4 | 3.8 | 1.7 | – | 0.0 | 16.5 | 55.2 |
| GAD3/ABC | 8–11 Feb 2016 | 800 | 65.2 | 12.9 | 7.0 | 2.5 | – | 12.4 | 12.4 | 52.3 |
| GAD3/ABC | 15–21 Jan 2016 | 802 | 68.8 | 9.2 | 7.7 | 3.3 | – | 11.0 | 11.0 | 59.6 |

### Hypothetical scenarios
#### Podemos–IU alliance (before confirmation)

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | | | | | PNV | | | | Lead |
| Encuestamos | 23 Apr–2 May 2016 | 1,800 | ? | 30.0 115/117 | 22.8 87/89 | 14.1 35/37 | 2.4 7/8 | 2.3 7/8 | 1.2 4/5 | 0.6 1/2 | 0.3 0/1 | 23.9 86/88 | 6.1 |
| NC Report/La Razón | 18–30 Apr 2016 | 2,000 | 63.9 | 30.1 126/130 | 20.7 80/83 | 15.3 39/44 | 2.0 8 | 1.5 6 | 1.3 6 | 0.8 2 | 0.3 1 | 24.5 75/82 | 5.6 |
| GAD3/ABC | 26–29 Apr 2016 | 800 | 68 | 29.7 125 | 23.2 94 | 14.0 39 | 2.2 8 | 1.8 7 | 1.3 6 | 0.9 2 | 0.4 1 | 20.9 68 | 6.5 |
| Metroscopia/El País | 26–28 Apr 2016 | 1,200 | 70 | 29.0 | 20.3 | 16.9 | – | – | – | – | – | 22.3 | 6.7 |
| NC Report/La Razón | 18–23 Apr 2016 | 2,000 | 63.9 | 30.2 125/130 | 20.9 80/83 | 15.5 40/45 | 2.3 8 | 1.6 6 | 1.2 6 | 0.8 2 | 0.3 1 | 24.1 74/81 | 6.1 |
| JM&A/Público | 22 Apr 2016 | ? | 68.6 | 27.8 110 | 20.0 72 | 16.5 51 | 2.3 8 | 2.3 9 | 1.3 5 | 0.8 2 | 0.3 1 | 25.2 92 | 2.6 |
| Sigma Dos/El Mundo | 18–22 Apr 2016 | 800 | ? | 29.8 123 | 22.9 90 | 15.2 44 | 2.6 9 | 1.9 6 | 1.1 5 | – | – | 21.5 70 | 6.9 |
| NC Report/La Razón | 12–16 Apr 2016 | 2,400 | 64.2 | 30.1 126/130 | 21.0 83/85 | 15.6 42/47 | 2.3 8/9 | 1.6 5/6 | 1.2 6/7 | 0.7 2 | 0.3 1 | 23.7 70/76 | 6.4 |
| CIS | 1–10 Apr 2016 | 2,490 | ? | 27.4 115 | 21.6 87 | 15.6 45 | 2.5 9 | 1.9 6 | 1.0 4 | 0.7 2 | 0.4 1 | 23.1 81 | 4.3 |
| NC Report/La Razón | 4–9 Apr 2016 | 2,300 | ? | 30.0 | 21.4 | 15.8 | 2.4 | 1.6 | 1.3 | 0.7 | 0.3 | 23.1 | 6.9 |
| Metroscopia | 5–6 Apr 2016 | 1,200 | 70 | 29.0 | 20.1 | 17.7 | – | – | – | – | – | 20.8 | 8.2 |
| Redondo & Asociados/Tiempo | 28 Mar–4 Apr 2016 | 1,000 | 69.7 | 29.1 125 | 21.8 84 | 15.7 38 | 2.4 9 | 1.7 7 | 1.3 6 | 0.7 2 | 0.3 1 | 24.0 78 | 5.1 |
| NC Report/La Razón | 22 Mar–2 Apr 2016 | 1,800 | ? | 29.8 | 22.1 | 15.8 | 2.5 | 1.7 | 1.3 | 0.7 | 0.3 | 22.1 | 7.7 |
| NC Report/La Razón | 22–27 Mar 2016 | 900 | ? | 29.8 | 22.4 | 15.5 | 2.5 | 1.8 | 1.3 | 0.7 | 0.3 | 22.3 | 7.4 |
| Redondo & Asociados/Tiempo | 16 Dec–25 Jan 2016 | 13,000 | ? | 29.8 131 | 19.4 74 | 10.3 18 | ? 9 | ? 8 | ? 6 | ? 2 | ? 1 | 25.6 101 | 4.2 |
| IMOP/Llorente & Cuenca | 9–11 Jan 2016 | 1,000 | 69 | 31.4 128 | 23.5 93 | 11.8 26 | 2.3 9 | 1.8 7 | 1.2 6 | 0.9 2 | ? 1 | 22.9 78 | 7.9 |

#### PP candidates

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | | | | | | | Lead |
| Netquest/El Español | 18–22 Apr 2016 | 1,000 | ? | – | – | 29.1 | 19.2 | 19.9 | 16.1 | 7.5 | 9.2 |
| Netquest/El Español | 18–22 Apr 2016 | 1,000 | ? | – | 30.9 | – | 20.0 | 19.9 | 15.8 | 7.0 | 10.9 |
| Netquest/El Español | 18–22 Apr 2016 | 1,000 | ? | 27.0 | – | – | 20.6 | 20.0 | 17.9 | 7.3 | 6.4 |

#### PSOE candidates

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | | | | | | Lead |
| Netquest/El Español | 18–22 Apr 2016 | 1,000 | ? | 26.2 | – | 18.3 | 20.2 | 17.8 | 7.9 | 6.0 |
| Netquest/El Español | 18–22 Apr 2016 | 1,000 | ? | 27.0 | 20.6 | – | 20.0 | 17.9 | 7.3 | 6.4 |

### Sub-national polling
## Preferred coalition

| Polling firm/Commissioner | Fieldwork date | Sample size | PP C's | PP C's | PP PSOE | PP PSOE | PP PSOE C's | PP PSOE C's | PP PSOE C's | PSOE Podemos | PSOE Podemos | PSOE Podemos C's | PSOE Podemos C's | PSOE Podemos C's | PSOE C's | PSOE C's | Other/ None/ Not care | ? |
| InvyMark/laSexta | 15–16 Jun 2016 | ? | 18.9 | 18.9 | – | – | 15.8 | 15.8 | 15.8 | 27.4 | 27.4 | – | – | – | – | – | 37.9 | 37.9 |
| MyWord/Cadena SER | 13–16 Jun 2016 | 1,502 | 15.2 | 15.2 | – | – | 20.4 | 20.4 | 20.4 | 34.4 | 34.4 | 12.4 | 12.4 | 12.4 | – | – | – | 17.6 |
| GAD3/La Vanguardia | 6–9 Jun 2016 | 1,016 | 20.7 | 20.7 | 13.7 | 13.7 | – | – | – | 28.2 | 28.2 | – | – | – | 18.4 | 18.4 | 10.4 | 8.6 |
| MyWord/Cadena SER | 20–24 May 2016 | 1,000 | 14.1 | 14.1 | – | – | 24.9 | 24.9 | 24.9 | 31.9 | 31.9 | 15.9 | 15.9 | 15.9 | – | – | – | 13.2 |
| NC Report/La Razón | 18–30 Apr 2016 | 2,000 | 22.6 | 22.6 | – | – | – | – | – | 21.4 | 21.4 | – | – | – | – | – | 45.0 | 11.0 |
| InvyMark/laSexta | 28 Mar–1 Apr 2016 | 1,200 | – | – | – | – | 28.5 | 28.5 | 28.5 | 35.7 | 35.7 | 15.6 | 15.6 | 15.6 | – | – | 20.2 | 20.2 |
| Sigma Dos/El Mundo | 28–31 Mar 2016 | 800 | 16.8 | 16.8 | – | – | 26.2 | 26.2 | 26.2 | 20.3 | 20.3 | 13.7 | 13.7 | 13.7 | 13.4 | 13.4 | – | 9.5 |
| NC Report/La Razón | 13–17 Mar 2016 | 1,000 | – | – | – | – | 41.8 | 41.8 | 41.8 | 31.2 | 31.2 | – | – | – | – | – | – | 27.0 |
| MyWord/Cadena SER | 10–14 Mar 2016 | 1,004 | – | – | – | – | 24.7 | 24.7 | 24.7 | 31.3 | 31.3 | – | – | – | 18.5 | 18.5 | – | 25.5 |
| GESOP/El Periódico | 5–8 Mar 2016 | 1,000 | – | – | 7.0 | 7.0 | 37.5 | 37.5 | 37.5 | 27.7 | 27.7 | 18.7 | 18.7 | 18.7 | – | – | 6.2 | 2.9 |
| InvyMark/laSexta | 22–26 Feb 2016 | 1,200 | – | – | – | – | 38.1 | 38.1 | 38.1 | 35.1 | 35.1 | 14.1 | 14.1 | 14.1 | – | – | 12.7 | 12.7 |
| InvyMark/laSexta | 15–19 Feb 2016 | ? | – | – | – | – | 36.4 | 36.4 | 36.4 | 35.4 | 35.4 | 8.4 | 8.4 | 8.4 | – | – | 17.7 | 2.1 |
| Sigma Dos/El Mundo | 16–18 Feb 2016 | 1,000 | 12.0 | 12.0 | – | – | 30.7 | 30.7 | 30.7 | 27.2 | 27.2 | – | – | – | 17.1 | 17.1 | – | 13.0 |
| InvyMark/laSexta | 1–5 Feb 2016 | ? | – | – | – | – | – | – | – | 38.0 | 38.0 | 17.8 | 17.8 | 17.8 | – | – | 42.3 | 1.9 |
| MyWord/Cadena SER | 15–19 Jan 2016 | 1,000 | – | – | 4.5 | 4.5 | 25.5 | 25.5 | 25.5 | 27.2 | 27.2 | 17.2 | 17.2 | 17.2 | – | – | – | 27.6 |
| NC Report/La Razón | 21–24 Dec 2015 | ? | – | – | 7.4 | 7.4 | 29.0 | 29.0 | 29.0 | 26.0 | 26.0 | – | – | – | – | – | 8.8 | 28.8 |