# Opinion polling for the 2015 Spanish general election

In the run up to the 2015 Spanish general election, various organisations carried out opinion polling to gauge voting intention in Spain during the term of the 10th 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 November 2011, to the day the next election was held, on 20 December 2015.
Voting intention estimates refer mainly to a hypothetical Congress of Deputies election. Polls are listed in reverse chronological order, showing the most recent first. The dates of when the survey fieldwork was done are used, 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.

##### 2015
###### Color key

Poll conducted after legal ban on opinion polls  Exit poll
| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | | | | | | PNV | | BNG | | | | | | Lead |
| 2015 general election | 20 Dec | — | 69.7 | 28.7 123 | 22.0 90 | 3.7 2 | 0.6 0 | – | 0.9 2 | 1.2 6 | 2.4 9 | 0.3 0 | 0.3 1 | | 13.9 40 | 20.7 69 | 2.2 8 | 6.7 |
| TNS Demoscopia/RTVE–FORTA | 20 Dec | 177,100 | ? | 26.8 114/118 | 20.5 81/85 | 4.1 3/4 | 1.1 0 | – | 1.0 3/4 | 1.1 4/5 | 2.5 9/11 | 0.3 0 | 0.3 0/1 | | 15.2 47/50 | 21.7 76/80 | 1.7 6/7 | 5.1 |
| Redondo & Asociados | 18–19 Dec | 1,790 | ? | 29.3 124 | 20.7 83 | 3.3 1 | 0.3 0 | – | 1.2 6 | 1.4 6 | 1.7 6 | 0.3 0 | 0.4 1 | | 16.6 53 | 19.5 63 | 1.8 7 | 8.6 |
| GESOP/El Periòdic | 17–19 Dec | 950 | 75–77 | 26.6 112/116 | 20.1 76/80 | 4.0 1/3 | – | – | – | – | – | – | – | | 15.3 45/49 | 21.5 80/84 | – | 5.1 |
| GESOP/El Periòdic | 16–18 Dec | 800 | 75–77 | 26.6 111/115 | 20.8 82/86 | 4.4 2/4 | – | – | – | – | – | – | – | | 15.5 47/51 | 20.1 70/74 | – | 5.8 |
| GAD3/Antena 3 | 14–18 Dec | 7,000 | 74 | 28.1 121/124 | 20.4 79/83 | 4.3 2/4 | – | – | 0.9 2/4 | 1.3 5/6 | 2.7 8/9 | – | 0.3 0/1 | | 14.9 46/50 | 21.1 70/74 | 1.8 5/7 | 7.0 |
| GESOP/El Periòdic | 15–17 Dec | 750 | 74–76 | 25.8 107/111 | 21.4 84/88 | 3.8 2/4 | – | – | – | – | – | – | – | | 16.0 50/54 | 20.4 71/75 | – | 4.4 |
| GESOP/El Periòdic | 14–16 Dec | 700 | 74–76 | 26.2 108/112 | 21.0 83/87 | 3.7 2/4 | – | – | – | – | – | – | – | | 15.9 50/54 | 20.4 71/75 | – | 5.2 |
| GESOP/El Periòdic | 13–15 Dec | 650 | ? | 25.4 106/110 | 20.6 81/85 | 4.5 3/5 | – | – | – | – | – | – | – | | 16.3 54/58 | 19.6 66/70 | – | 4.8 |
| GESOP/El Periòdic | 12–14 Dec | 700 | ? | 25.4 104/108 | 20.9 81/85 | 4.8 3/5 | – | – | – | – | – | – | – | | 17.2 57/61 | 19.0 63/67 | – | 4.5 |
| GAD3/Antena 3 | 7–14 Dec | 3,200 | ? | 28.6 120/125 | 21.0 79/82 | 3.9 3/4 | – | – | 1.1 5 | 1.3 6 | 2.3 8 | – | 0.4 0/1 | | 17.6 60/63 | 17.9 52/55 | 2.4 9 | 7.6 |
| Encuestamos | 7–14 Dec | 2,000 | ? | 26.9 116/120 | 22.9 87/91 | 4.0 1/5 | – | – | 1.1 5/7 | 1.4 5/6 | 2.2 8/11 | ? 0/2 | ? 1/2 | | 17.0 45/49 | 18.6 57/61 | 1.9 8/10 | 4.0 |
| GIPEyOP | 27 Nov–14 Dec | 14,005 | ? | 23.3– 25.9 99/111 | 20.0– 22.3 77/89 | 3.3– 4.3 1/6 | 0.6– 1.2 0/1 | – | 0.9– 1.6 4/7 | 0.9– 1.5 4/7 | 2.7– 3.6 11/14 | 0.3– 0.7 0/2 | 0.3– 0.8 1/3 | | 15.4– 17.5 48/59 | 18.6– 21.1 62/74 | 2.2– 3.2 8/11 | 3.3– 3.6 |
| JM&A/Público | 13 Dec | ? | 74.6 | 27.7 120 | 18.6 70 | 3.1 1 | 0.3 0 | – | 1.0 5 | 1.3 6 | 2.1 8 | 0.5 0 | 0.5 1 | | 20.1 68 | 18.0 61 | 2.3 9 | 7.6 |
| TNS Demoscopia/Antena 3 | 30 Nov–13 Dec | 1,017 | ? | 28.9 | 18.9 | 4.8 | – | – | – | – | – | – | – | | 20.0 | 17.3 | – | 8.9 |
| GESOP/El Periódico | 10–12 Dec | 800 | ? | 25.2 103/107 | 20.8 80/84 | ? 3/5 | – | – | – | – | – | – | – | | 18.0 60/64 | 18.4 59/63 | – | 4.4 |
| NC Report/La Razón | 9–12 Dec | 3,000 | 75.8 | 29.9 125/128 | 22.0 88/92 | 3.3 1 | 0.3 0 | – | 1.1 6 | 1.0 6 | 2.0 8 | 0.4 1 | 0.3 1 | | 17.8 55/62 | 16.3 49/51 | 1.9 7 | 7.9 |
| Celeste-Tel/eldiario.es | 7–11 Dec | 1,100 | 72.7 | 28.1 115/123 | 22.7 85/92 | 3.5 1/3 | 0.4 0 | – | 1.1 5/6 | 1.2 5/6 | 2.0 7/8 | 0.4 0/1 | 0.3 1 | | 18.1 53/61 | 17.0 47/53 | 2.0 7/8 | 5.4 |
| InvyMark/laSexta | 7–11 Dec | ? | ? | 29.0 | 18.9 | 3.6 | 0.1 | – | – | – | – | – | – | | 18.9 | 17.2 | – | 10.1 |
| Demoscopia Servicios/esRadio | 7–11 Dec | 1,500 | ? | 28.8 123 | 19.7 72 | 2.7 1 | 0.2 0 | – | – | – | ? 7 | – | – | | 19.9 70 | 17.9 59 | 1.2 7 | 8.9 |
| Simple Lógica | 1–11 Dec | 1,005 | 70.3 | 27.0 | 18.2 | 5.2 | 0.6 | – | – | 0.7 | – | – | – | | 20.9 | 17.2 | 2.0 | 6.1 |
| Hamalgama Métrica/La Provincia | 1–11 Dec | 1,206 | ? | 26.5 100/120 | 22.7 80/90 | 3.2 4/6 | 0.5 0 | – | 1.1 4/6 | 1.1 4/6 | 2.0 8/11 | – | 0.2 0/1 | | 20.3 60/80 | 18.1 45/60 | 1.7 7/9 | 3.8 |
| GAD3/ABC | 16 Nov–11 Dec | 7,300 | 77 | 28.3 117/124 | 21.2 83/85 | 4.1 3/5 | 0.3 0 | – | 1.1 5 | 1.3 6 | 2.3 8 | 0.3 0 | 0.4 1 | | 18.1 59/63 | 17.6 50/53 | 2.4 9 | 7.1 |
| Metroscopia/El País | 7–10 Dec | 2,800 | 79 | 25.3 105/112 | 21.0 85/94 | 5.0 1/3 | – | – | – | – | – | – | – | | 18.2 53/67 | 19.1 55/64 | – | 4.3 |
| IBES/Última Hora | 7–10 Dec | 1,800 | ? | 27.7 113/117 | 20.5 86/90 | 4.3 5/7 | 0.3 0 | – | 1.1 5/7 | 1.1 4/6 | 2.1 8/9 | 0.4 0/1 | 0.3 0/1 | | 19.8 65/69 | 16.2 42/48 | 2.1 8/9 | 7.2 |
| MyWord/Cadena SER | 3–9 Dec | 1,500 | ? | 26.5 114/118 | 21.7 82/86 | 4.0 3/4 | 1.0 0 | – | – | – | – | – | – | | 18.6 61/66 | 17.0 51/57 | – | 4.8 |
| Sigma Dos/El Mundo | 1–9 Dec | 8,350 | ? | 27.2 114/119 | 20.3 76/81 | 3.7 3/5 | – | – | 1.1 4 | 1.2 5 | 2.5 9 | – | ? 0/1 | | 19.6 62/69 | 18.4 56/60 | 2.4 9 | 6.9 |
| Redondo & Asociados | 1–9 Dec | 1,500 | ? | 28.3 120 | 20.8 80 | 3.3 1 | – | – | 1.2 4 | 1.4 6 | 1.9 8 | – | 0.4 1 | | 19.8 73 | 16.6 50 | 1.8 7 | 7.5 |
| DYM/El Confidencial | 27 Nov–9 Dec | 1,012 | ? | 26.7 | 17.0 | 6.3 | – | – | – | – | – | – | – | | 23.2 | 19.1 | – | 3.5 |
| Infortécnica | 16 Nov–9 Dec | 2,114 | ? | ? 110/120 | ? 70/76 | ? 2/6 | – | – | – | – | – | – | – | | ? 66/72 | ? 57/63 | – | ? |
| Encuestamos | 1–7 Dec | 1,800 | ? | 26.7 | 24.9 | 4.9 | – | – | 1.0 | 1.5 | 2.2 | – | – | | 16.2 | 16.4 | 1.9 | 1.8 |
| JM&A/Público | 6 Dec | ? | 70.1 | 26.6 118 | 18.8 75 | 3.1 1 | 0.3 0 | – | 1.0 4 | 1.2 6 | 2.0 8 | 0.5 0 | 0.5 1 | | 21.2 75 | 16.6 51 | 2.2 10 | 5.4 |
| TNS Demoscopia/Antena 3 | 23 Nov–6 Dec | 1,035 | ? | 27.9 | 20.4 | 4.3 | – | – | – | – | – | – | – | | 21.9 | 15.1 | – | 6.0 |
| Sondaxe/La Voz de Galicia | 30 Nov–4 Dec | 1,000 | ? | 27.8 124 | 19.4 78 | 3.6 1 | – | – | 0.7 4 | 1.2 7 | 2.1 6 | ? 0 | ? 0 | | 19.9 63 | 18.2 56 | 3.0 9 | 7.9 |
| Celeste-Tel/eldiario.es | 30 Nov–4 Dec | 1,100 | 71.7 | 28.2 118/121 | 23.1 90/93 | 3.8 2/3 | 0.3 0 | – | 1.0 5/6 | 1.2 5/6 | 1.9 7/8 | 0.4 0/1 | 0.3 1 | | 18.8 61/67 | 16.2 46/51 | 2.0 7/8 | 5.1 |
| InvyMark/laSexta | 30 Nov–4 Dec | ? | ? | 28.9 | 19.9 | 3.5 | 0.2 | – | – | – | – | – | – | | 18.7 | 16.0 | – | 9.0 |
| A+M/20minutos | 23 Nov–4 Dec | 5,000 | 73.8 | 28.1 112/116 | 21.0 78/82 | 3.8 2 | – | – | 1.4 6/7 | 1.4 5 | 1.8 9 | – | 0.1 1 | | 21.0 70/72 | 15.1 53/54 | 1.6 7/8 | 7.1 |
| NC Report/La Razón | 23 Nov–4 Dec | 1,500 | 74.6 | 29.8 126/133 | 22.7 89/92 | 3.7 3 | 0.3 0 | – | 1.0 5 | 1.2 6 | 2.0 7/8 | 0.3 1 | 0.4 2 | | 17.8 55/62 | 15.6 40/45 | 2.1 8/9 | 7.1 |
| Sigma Dos/Mediaset | 1–3 Dec | 1,800 | ? | 27.5 117/121 | 19.4 70/74 | 4.0 3/4 | – | – | – | 1.0 ? | 2.0 8/9 | – | – | | 21.6 75/79 | 17.2 48/52 | 2.0 8/9 | 5.9 |
| GAD3/ABC | 10 Nov–3 Dec | 5,700 | 76 | 28.2 120/123 | 21.5 85/87 | 3.7 1/3 | 0.3 0 | – | 1.1 5 | 1.5 5 | 2.2 8 | 0.2 0 | 0.4 1 | | 17.9 59/63 | 16.6 51/52 | 2.5 9 | 6.7 |
| Encuestamos | 25 Nov–1 Dec | 1,800 | ? | 26.5 | 25.2 | 5.3 | – | – | 1.1 | 1.4 | 2.2 | 0.6 | 0.4 | | 15.8 | 16.3 | 1.9 | 1.3 |
| Redondo & Asociados | 25 Nov–1 Dec | 1,500 | ? | 28.1 114 | 21.5 84 | 3.9 2 | – | – | 1.1 4 | 1.3 6 | 2.1 8 | – | 0.5 2 | | 20.2 74 | 15.3 48 | 2.0 7 | 6.6 |
| TNS Demoscopia/Antena 3 | 16–29 Nov | 1,033 | ? | 27.1 | 20.0 | 4.0 | 0.3 | – | – | – | – | – | – | | 21.6 | 15.5 | – | 5.5 |
| GESOP/El Periódico | 23–28 Nov | 1,816 | ? | 23.9 98/102 | 21.4 82/86 | 4.9 4/6 | – | – | – | – | 2.7 9/11 | – | – | | 21.0 76/80 | 16.0 52/56 | 2.0 7/8 | 2.5 |
| Celeste-Tel/eldiario.es | 23–27 Nov | 1,100 | ? | 28.1 118/121 | 23.9 95/98 | 3.6 2/3 | 0.4 0 | – | 1.0 5/6 | 1.2 5/6 | 1.9 8/9 | 0.5 0/1 | 0.4 1/2 | | 18.6 57/61 | 15.3 39/44 | 1.9 8/9 | 4.2 |
| InvyMark/laSexta | 23–27 Nov | 1,200 | ? | 29.5 | 20.8 | 3.4 | 0.2 | – | – | – | – | – | – | | 18.0 | 14.3 | – | 8.7 |
| NC Report/La Razón | 9–27 Nov | 3,000 | 74.0 | 29.3 125/130 | 23.1 91/95 | 3.5 3 | 0.3 0 | – | 0.9 5 | 1.2 6 | 2.0 7/8 | 0.3 1 | 0.4 2 | | 17.4 52/55 | 15.6 42/46 | 2.1 8/9 | 6.2 |
| Sigma Dos/El Mundo | 24–26 Nov | 1,500 | ? | 27.1 111/115 | 20.2 78/79 | 3.8 3/5 | – | – | – | 1.1 5/6 | 2.2 8/9 | – | – | | 23.0 82/84 | 16.2 43/45 | 2.2 8/9 | 4.1 |
| Demoscopia Servicios/esRadio | 23–26 Nov | 1,500 | ? | 28.3 117 | 21.2 83 | 4.1 2 | 0.2 0 | – | 1.1 4 | 1.3 6 | 2.1 8 | – | ? 2 | | 19.9 72 | 15.5 48 | 2.0 7 | 7.1 |
| GAD3/ABC | 2–26 Nov | 4,300 | 74.5 | 28.3 125 | 23.1 91 | 4.0 3 | 0.3 0 | – | 1.3 5 | 1.4 5 | 2.5 9 | 0.2 0 | 0.4 1 | | 17.4 59 | 14.9 41 | 2.5 9 | 5.2 |
| Metroscopia/El País | 23–25 Nov | 1,200 | 78 | 22.7 | 22.5 | 5.2 | – | – | – | – | – | – | – | | 22.6 | 17.1 | – | 0.1 |
| Encuestamos | 18–24 Nov | 1,800 | ? | 26.6 | 25.4 | 6.2 | – | – | 0.9 | 1.4 | 2.1 | 0.6 | 0.4 | | 15.1 | 16.0 | 1.9 | 1.2 |
| Deimos Estadística | 22 Nov | ? | ? | 25.0 111 | 21.7 88 | 5.0 6 | – | – | 1.6 7 | 1.6 6 | 2.7 10 | 0.5 1 | 0.5 2 | | 20.2 62 | 16.8 47 | 2.2 8 | 3.3 |
| TNS Demoscopia/Antena 3 | 9–22 Nov | 1,018 | ? | 27.4 | 20.6 | 4.3 | 0.2 | – | – | – | – | – | – | | 21.3 | 14.3 | – | 6.1 |
| Celeste-Tel/eldiario.es | 16–20 Nov | 1,100 | 71.4 | 27.5 115/118 | 23.9 97/100 | 3.4 2/3 | 0.4 0 | – | 1.0 5/6 | 1.2 5/6 | 1.8 7/8 | 0.5 0/1 | 0.4 1/2 | | 18.9 59/63 | 15.1 36/42 | 2.0 8/9 | 3.6 |
| JM&A/Público | 19 Nov | ? | 69.9 | 27.2 121 | 18.7 76 | 4.2 4 | 0.5 0 | – | 1.2 5 | 1.3 6 | 2.7 11 | – | 0.5 2 | | 19.5 70 | 15.9 46 | 2.2 8 | 7.7 |
| GAD3/ABC | 26 Oct–19 Nov | 3,000 | 75 | 28.5 129 | 22.8 93 | 4.4 2 | 0.2 0 | – | 1.3 5 | 1.5 5 | 2.6 10 | 0.2 0 | 0.3 0 | | 16.4 52 | 15.6 44 | 2.2 9 | 5.7 |
| Encuestamos | 1–17 Nov | 1,800 | ? | 26.2 | 25.7 | 6.8 | – | – | 1.0 | 1.5 | 1.9 | – | – | | 15.0 | 15.4 | 2.1 | 0.5 |
| Simple Lógica | 2–16 Nov | 1,746 | 74.5 | 26.5 | 20.4 | 4.5 | 0.6 | – | – | 0.9 | – | – | – | | 21.9 | 16.9 | 1.6 | 4.6 |
| CIS | 27 Oct–16 Nov | 17,452 | ? | 28.6 120/128 | 20.8 77/89 | 3.6 3/4 | 0.7 0 | – | 1.2 6/7 | 1.1 5 | 1.9 7 | 0.3 0 | 0.3 1 | | 19.0 63/66 | 15.7 45/49 | 2.2 0 | 7.8 |
| TNS Demoscopia/Antena 3 | 2–15 Nov | 1,018 | ? | 26.4 | 20.5 | 5.1 | 0.4 | – | – | – | – | – | – | | 20.4 | 14.2 | – | 5.9 |
| Sigma Dos/Mediaset | 11–13 Nov | ? | ? | 27.3 112/115 | 20.3 77/79 | 4.7 5/6 | – | – | – | – | – | – | – | | 21.4 73/75 | 15.7 42/44 | – | 5.9 |
| InvyMark/laSexta | 9–13 Nov | ? | ? | 28.5 | 22.2 | 3.2 | 0.2 | – | – | – | – | – | – | | 18.2 | 14.0 | – | 6.7 |
| Celeste-Tel/eldiario.es | 9–13 Nov | 1,100 | 71.2 | 27.1 114/118 | 23.8 97/101 | 3.5 2/3 | 0.4 0 | – | 1.0 5/6 | 1.3 5/6 | 1.7 7/8 | 0.5 0/1 | 0.4 1/2 | | 19.5 63/68 | 14.6 33/39 | 2.1 8/9 | 3.3 |
| GAD3/ABC | 19 Oct–12 Nov | 3,100 | 75 | 27.9 127 | 22.1 89 | 4.9 5 | 0.4 0 | – | 1.4 6 | 1.6 6 | 2.5 9 | 0.4 1 | 0.4 1 | 0.9 2 | 17.9 56 | 13.7 37 | 2.2 9 | 5.8 |
| Sondaxe/La Voz de Galicia | 28 Oct–9 Nov | 1,000 | ? | 29.4 | 19.3 | 3.7 | 0.6 | – | 0.6 | 1.1 | 1.6 | 0.3 | 0.3 | – | 20.9 | 15.2 | 2.7 | 8.5 |
| IBES/Última Hora | 8 Nov | 2,508 | ? | 27.4 118 | 20.3 93 | 4.4 6 | 0.5 0 | – | 1.2 6 | 1.0 6 | 3.1 10 | 0.4 0 | 0.2 1 | 0.5 2 | 18.0 58 | 15.0 40 | 2.8 9 | 7.1 |
| TNS Demoscopia/Antena 3 | 26 Oct–8 Nov | 1,014 | ? | 26.3 | 19.6 | 4.7 | 0.6 | – | – | – | – | – | – | – | 20.2 | 15.0 | – | 6.1 |
| Celeste-Tel/eldiario.es | 2–6 Nov | 1,100 | 71.1 | 26.4 118/122 | 24.0 102/104 | 4.2 4/5 | 0.6 0 | – | 1.1 6/7 | 1.3 5/6 | 1.7 6/7 | 0.7 1/2 | 0.4 1/2 | 1.1 4 | 21.1 58/62 | 10.8 26/30 | 2.3 9/10 | 2.4 |
| Demoscopia Servicios/esRadio | 29 Oct–6 Nov | 1,800 | ? | 29.0 123 | 22.3 91 | 5.3 8 | 0.6 0 | – | – | ? 6 | ? 7 | – | – | – | 18.1 64 | 13.4 32 | 2.4 9 | 6.7 |
| JM&A/Público | 4 Nov | ? | 68.3 | 28.0 125 | 18.2 72 | 3.7 2 | 0.3 0 | – | 1.3 6 | 1.3 6 | 1.9 8 | – | 0.6 2 | 0.9 1 | 19.7 68 | 14.8 44 | 3.0 13 | 8.3 |
| GAD3/ABC | 14 Oct–4 Nov | 3,300 | 75.5 | 28.1 128 | 22.4 89 | 4.6 5 | 0.2 0 | – | 1.4 5 | 1.6 6 | 2.5 10 | 0.5 2 | 0.5 2 | 0.9 2 | 17.7 55 | 13.2 35 | 2.4 9 | 5.7 |
| TNS Demoscopia/Antena 3 | 19 Oct–1 Nov | 1,010 | ? | 26.7 | 19.3 | 4.4 | 0.4 | – | – | – | – | – | – | – | 19.8 | 15.4 | – | 6.9 |
| GAD3/ABC | 14–29 Oct | 2,800 | 75.5 | 27.8 128 | 22.1 88 | 4.4 5 | 0.2 0 | – | 1.4 5 | 1.6 6 | 2.6 9 | 0.6 2 | 0.5 2 | 0.9 2 | 17.5 55 | 13.9 37 | 2.6 9 | 5.7 |
| Metroscopia/El País | 26–28 Oct | 1,400 | 77 | 23.5 93/100 | 21.0 88/98 | 6.3 5 | – | – | – | – | – | – | – | – | 22.5 72/84 | 17.0 42/46 | – | 1.0 |
| MyWord/Cadena SER | 22–26 Oct | 1,001 | ? | 26.3 | 21.6 | 3.1 | 1.0 | – | – | – | – | – | – | – | 18.6 | 14.9 | – | 4.7 |
| DYM/El Confidencial | 15–26 Oct | 1,002 | ? | 27.0 | 18.2 | 6.1 | – | – | – | – | – | – | – | – | 20.3 | 13.8 | – | 6.7 |
| Encuestamos | 3–26 Oct | 1,800 | ? | 23.5 | 26.3 | 7.7 | – | – | 0.9 | 1.4 | 2.0 | – | – | – | 15.2 | 15.4 | 2.3 | 2.8 |
| TNS Demoscopia/Antena 3 | 12–25 Oct | 1,009 | ? | 26.0 | 20.5 | 4.4 | 0.5 | – | – | – | – | – | – | – | 19.2 | 14.6 | – | 5.5 |
| InvyMark/laSexta | 19–23 Oct | ? | ? | 28.6 | 23.9 | 3.0 | 0.1 | – | – | – | – | – | – | – | 18.3 | 13.5 | – | 4.7 |
| JM&A/Público | 22 Oct | ? | 71.1 | 27.4 120 | 22.9 94 | 3.7 2 | 0.3 0 | – | 1.1 5 | 1.2 6 | 1.6 7 | – | 0.6 2 | 0.7 1 | 17.7 59 | 14.5 39 | 2.9 12 | 4.5 |
| Demoscopia Servicios/13TV | 19–22 Oct | 1,500 | ? | 29.5 127 | 24.1 92 | 4.5 4 | – | – | 1.0 4 | 1.3 6 | 1.6 6 | – | ? 1 | ? 1 | 16.6 57 | 13.7 41 | 2.5 10 | 5.4 |
| GAD3/ABC | 14 Sep–19 Oct | 2,600 | 75.5 | 27.7 128 | 21.8 84 | 4.1 4 | 0.3 0 | – | 1.5 6 | 1.6 6 | 2.5 9 | 0.6 2 | 0.5 2 | 0.9 1 | 17.6 56 | 14.1 39 | 2.7 11 | 5.9 |
| TNS Demoscopia/Antena 3 | 5–18 Oct | 1,050 | ? | 26.7 | 21.3 | 4.2 | 0.7 | – | – | – | – | – | – | – | 18.1 | 14.3 | – | 5.4 |
| NC Report/La Razón | 12–17 Oct | 1,500 | 69.8 | 31.3 125/130 | 24.9 109/112 | 4.1 3/5 | 0.4 0 | – | 1.1 5/6 | 1.3 7/8 | 1.9 6/7 | 0.6 1/2 | 0.4 1/2 | 1.1 3/4 | 15.4 32/38 | 10.3 23/25 | 2.2 9/10 | 6.4 |
| Sigma Dos/Mediaset | 13–15 Oct | 1,800 | ? | 27.4 | 23.7 | 4.1 | – | – | – | 1.5 | 2.0 | – | – | – | 18.1 | 16.3 | 2.2 | 3.7 |
| NC Report | 8–15 Oct | ? | ? | 30.9 | 24.5 | 4.0 | – | – | – | – | – | – | – | – | 14.9 | 12.4 | – | 6.4 |
| CIS | 1–12 Oct | 2,493 | ? | 29.1 130 | 25.3 109 | 4.7 5 | 1.2 0 | – | 1.2 ? | 0.7 ? | 2.2 8 | 0.5 ? | 0.6 ? | 1.4 ? | 14.7 48 | 10.8 25 | 2.9 11 | 3.8 |
| TNS Demoscopia/Antena 3 | 28 Sep–11 Oct | 1,072 | ? | 26.9 | 21.0 | 4.3 | 0.7 | – | – | – | – | – | – | – | 17.8 | 14.2 | – | 5.9 |
| InvyMark/laSexta | 5–9 Oct | ? | ? | 27.6 | 24.6 | 2.0 | 0.1 | – | – | 1.4 | 2.6 | – | – | – | 17.2 | 16.1 | 2.8 | 3.0 |
| Simple Lógica | 1–9 Oct | 1,047 | 70.0 | 28.0 | 20.3 | 6.2 | 0.7 | – | – | 0.3 | – | – | – | – | 22.6 | 11.9 | 1.7 | 5.4 |
| Metroscopia/El País | 7–8 Oct | 1,200 | 77 | 23.4 | 23.5 | 5.6 | – | – | – | – | – | – | – | – | 21.5 | 14.1 | – | 0.1 |
| Celeste-Tel/eldiario.es | 1–7 Oct | 1,100 | 70.8 | 28.9 121/125 | 27.1 106/108 | 4.4 4/5 | 0.5 0 | – | 1.0 6/7 | 1.3 5/6 | 1.5 6/7 | 0.7 1/2 | 0.4 1/2 | 1.0 3 | 16.2 56/59 | 10.1 20/23 | 2.0 8/9 | 1.8 |
| TNS Demoscopia/Antena 3 | 21 Sep–4 Oct | 1,040 | ? | 27.0 | 21.9 | 4.5 | 0.7 | – | – | – | – | – | – | – | 16.5 | 14.8 | – | 5.1 |
| Demoscopia Servicios/esRadio | 29 Sep–2 Oct | 1,000 | ? | 30.4 139 | 26.5 111 | 4.4 7 | 0.3 0 | – | – | ? 6 | ? 6 | – | – | – | 12.3 27 | 16.7 36 | 2.2 8 | 3.9 |
| NC Report/La Razón | 28 Sep–2 Oct | 1,500 | 69.1 | 33.8 136/139 | 24.8 108/112 | 4.2 3/5 | 0.4 0 | – | 1.2 5/6 | 1.2 7/8 | 2.0 7/8 | 0.6 1/2 | 0.4 1/2 | 1.2 3/4 | 11.7 26/28 | 11.2 26/27 | 2.5 9/10 | 9.0 |
| Intercampo/GETS | 8 Sep–2 Oct | 2,321 | ? | 25.0– 28.0 | 29.0– 32.0 | 4.0– 6.0 | 0.1– 0.3 | – | – | 1.4– 2.0 | 2.0– 4.0 | – | – | – | 11.0– 15.0 | 16.0– 18.0 | 0.7– 1.5 | 4.0 |
| JM&A/Público | 1 Oct | ? | 69.8 | 28.3 124 | 22.7 96 | 3.7 2 | 0.5 0 | – | 0.9 3 | 1.2 6 | 1.8 8 | – | 0.6 3 | 1.1 3 | 15.4 42 | 15.0 48 | 3.1 11 | 5.6 |
| TNS Demoscopia/Antena 3 | 14–27 Sep | 1,060 | ? | 27.9 | 23.0 | 4.2 | 0.8 | – | – | – | – | – | – | – | 14.0 | 15.9 | – | 4.9 |
| Podemos | 10–24 Sep | 1,738 | ? | 27.0– 29.0 | 19.0– 21.0 | 3.0– 4.0 | – | – | – | – | – | – | – | – | 19.0– 21.0 | 19.0– 21.0 | – | 8.0 |
| Encuestamos | 3–24 Sep | 1,600 | ? | 26.2 | 26.1 | 6.1 | – | – | 0.8 | 1.5 | 2.1 | – | – | – | 11.0 | 17.9 | 2.5 | 0.1 |
| TNS Demoscopia/Antena 3 | 7–20 Sep | 1,054 | ? | 28.6 | 22.5 | 4.8 | 0.7 | – | – | – | – | – | – | – | 13.7 | 16.2 | – | 6.1 |
| TNS Demoscopia/Antena 3 | 31 Aug–13 Sep | 1,040 | ? | 29.0 | 22.0 | 4.2 | 0.8 | – | – | – | – | – | – | – | 13.2 | 16.5 | – | 7.0 |
| Metroscopia/El País | 7–11 Sep | 1,800 | 73 | 23.4 | 24.6 | 5.0 | 0.9 | – | – | – | – | – | – | – | 16.1 | 18.6 | – | 1.2 |
| Demoscopia Servicios/esRadio | 3–11 Sep | 1,800 | ? | 31.7 153 | 25.6 102 | 3.9 5 | 0.4 0 | – | – | ? 6 | ? 5 | – | – | – | 10.5 18 | 18.2 41 | 2.3 9 | 6.1 |
| Simple Lógica | 1–9 Sep | ? | ? | 28.0 | 19.1 | 5.0 | 1.5 | – | – | 1.1 | – | – | – | – | 19.6 | 16.1 | 2.8 | 8.4 |
| Celeste-Tel/eldiario.es | 1–7 Sep | 1,100 | 66.8 | 32.0 134/137 | 27.4 116/120 | 4.6 2/4 | 0.6 0 | – | 1.1 5/6 | 1.3 5/7 | 1.6 8/9 | 0.8 1/2 | 0.4 1/2 | 1.1 3/5 | 10.0 17/19 | 12.2 31/36 | 2.1 10/11 | 4.6 |
| TNS Demoscopia/Antena 3 | 24 Aug–6 Sep | 1,096 | ? | 28.6 | 22.5 | 3.9 | 1.0 | – | – | – | – | – | – | – | 12.7 | 16.0 | – | 6.1 |
| Sondaxe/La Voz de Galicia | 26 Aug–5 Sep | 1,000 | ? | 31.5 118 | 22.7 85 | 3.7 14 | 0.5 2 | – | 0.8 3 | 1.1 4 | 1.6 6 | 0.5 2 | 0.3 1 | – | 11.8 44 | 16.3 61 | 2.4 9 | 8.8 |
| JM&A/Público | 30 Aug | ? | 69.8 | 29.5 127 | 22.4 93 | 3.3 2 | 0.6 0 | – | 0.9 3 | 1.2 6 | 1.8 8 | – | 0.6 3 | 1.1 3 | 12.7 33 | 16.7 56 | 3.1 12 | 7.1 |
| TNS Demoscopia/Antena 3 | 17–30 Aug | 1,118 | ? | 28.5 | 22.8 | 4.2 | 0.9 | – | – | – | – | – | – | – | 12.3 | 16.2 | – | 5.7 |
| NC Report/La Razón | 25–29 Aug | 900 | 67.3 | 32.1 138/141 | 24.9 107/114 | 4.4 4/5 | 1.0 0/1 | – | 1.1 5 | 1.3 5 | 1.7 7/8 | 0.6 1/2 | 0.4 1/2 | 1.5 2/3 | 10.4 21/23 | 12.1 30/32 | 2.3 8/9 | 7.2 |
| MyWord/Cadena SER | 20–27 Aug | 1,001 | ? | 28.3 | 25.9 | 2.6 | 1.5 | – | – | – | – | – | – | – | 11.3 | 15.4 | – | 2.4 |
| TNS Demoscopia/Antena 3 | 10–23 Aug | 1,112 | ? | 27.3 | 22.6 | 4.5 | 0.9 | – | – | – | – | – | – | – | 13.2 | 16.3 | – | 4.7 |
| Encuestamos | 1–23 Aug | 1,500 | ? | 27.5 | 26.0 | 5.7 | – | – | 1.1 | 1.6 | 1.9 | – | – | – | 8.6 | 19.4 | 2.1 | 1.5 |
| TNS Demoscopia/Antena 3 | 3–16 Aug | 1,086 | ? | 27.0 | 22.9 | 4.5 | 0.8 | – | – | – | – | – | – | – | 12.9 | 16.5 | – | 4.1 |
| Simple Lógica | 3–11 Aug | 1,022 | 72.2 | 29.9 | 21.4 | 5.4 | 1.2 | – | – | 1.0 | – | – | – | – | 17.1 | 16.5 | 1.2 | 8.5 |
| TNS Demoscopia/Antena 3 | 27 Jul–9 Aug | 1,080 | ? | 26.4 | 22.4 | 4.7 | 1.0 | – | – | – | – | – | – | – | 13.4 | 16.8 | – | 4.0 |
| Celeste-Tel/eldiario.es | 3–7 Aug | 1,100 | 66.3 | 31.4 135/137 | 27.6 118/121 | 4.6 2/4 | 0.8 0 | – | 0.9 5/6 | 1.1 5/7 | 1.6 8/9 | 0.7 1/2 | 0.4 1/2 | 1.2 3/4 | 9.9 18/20 | 11.9 30/34 | 2.0 8/9 | 3.8 |
| TNS Demoscopia/Antena 3 | 20 Jul–2 Aug | 1,075 | ? | 25.7 | 22.9 | 5.0 | 1.2 | – | – | – | – | – | – | – | 13.6 | 16.9 | – | 2.8 |
| TNS Demoscopia/Antena 3 | 13–26 Jul | 920 | ? | 26.8 | 23.0 | 4.0 | 1.2 | – | – | – | – | – | – | – | 13.7 | 17.6 | – | 3.8 |
| Demoscopia Servicios/esRadio | 16–24 Jul | 1,800 | ? | 30.5 142 | 25.1 98 | 3.3 4 | 0.7 0 | – | – | ? 6 | ? 6 | – | – | – | 10.6 17 | 19.3 56 | 2.5 10 | 5.4 |
| Sigma Dos/Mediaset | 21–23 Jul | 1,800 | ? | 28.8 | 24.2 | 4.2 | – | – | – | 1.3 | 2.1 | – | – | – | 11.1 | 20.3 | 2.1 | 4.6 |
| Metroscopia/El País | 20–22 Jul | 1,000 | 72 | 23.1 | 23.5 | 5.6 | 0.3 | – | – | – | – | – | – | – | 16.0 | 18.1 | – | 0.4 |
| Encuestamos | 1–20 Jul | 1,450 | ? | 26.0 | 25.4 | 4.1 | – | – | 1.0 | 1.8 | 2.4 | 0.9 | 0.5 | 1.8 | 9.2 | 21.1 | 2.9 | 0.6 |
| TNS Demoscopia/Antena 3 | 6–19 Jul | 910 | ? | 27.1 | 22.6 | 2.9 | 0.8 | – | – | – | – | – | – | – | 13.5 | 18.6 | – | 4.5 |
| NC Report | 8–16 Jul | 955 | ? | 31.7 | 24.8 | 4.5 | – | – | – | – | – | – | – | – | 11.0 | 12.3 | – | 6.9 |
| TNS Demoscopia/Antena 3 | 29 Jun–12 Jul | 1,000 | ? | 26.1 | 22.2 | 2.8 | 0.9 | – | – | – | – | – | – | – | 13.6 | 19.1 | – | 3.9 |
| InvyMark/laSexta | 6–10 Jul | 1,200 | ? | 27.7 | 23.3 | 2.0 | 0.2 | – | – | 1.4 | 2.8 | – | – | – | 11.5 | 21.9 | 2.6 | 4.4 |
| CIS | 1–9 Jul | 2,486 | ? | 28.2 126 | 24.9 105 | 3.7 2 | 1.3 ? | – | 1.1 3 | 1.3 6 | 2.1 8 | 0.7 ? | 0.4 ? | 1.2 ? | 11.1 26 | 15.7 53 | 3.3 14 | 3.3 |
| Simple Lógica | 1–9 Jul | 1,040 | 71.5 | 26.2 | 23.1 | 5.4 | 0.5 | – | – | 1.0 | – | – | – | – | 18.4 | 14.9 | 1.4 | 3.1 |
| GAD3/ABC | 23 Jun–8 Jul | 1,000 | 71 | 29.1 131 | 25.5 106 | 3.6 2 | 0.3 0 | – | 1.3 6 | 1.2 5 | 2.3 9 | 0.6 2 | 0.6 2 | 0.9 2 | 12.1 32 | 15.0 41 | 2.7 11 | 3.6 |
| Celeste-Tel/eldiario.es | 1–7 Jul | 1,100 | 66.0 | 30.7 133/135 | 27.4 118/123 | 4.8 3/5 | 1.0 0 | – | 0.9 5/6 | 1.1 5/7 | 1.7 8/9 | 0.7 1/2 | 0.4 1/2 | 1.2 3/4 | 10.2 20/21 | 13.3 33/37 | 1.8 7/8 | 3.3 |
| TNS Demoscopia/Antena 3 | 22 Jun–5 Jul | ? | ? | 26.0 | 22.8 | 2.9 | 0.8 | – | – | – | – | – | – | – | 12.5 | 19.2 | – | 3.2 |
| Metroscopia/El País | 1–2 Jul | 1,000 | 72 | 23.0 | 22.5 | 4.0 | 0.5 | – | – | – | – | – | – | – | 15.0 | 21.5 | – | 0.5 |
| TNS Demoscopia/Antena 3 | 15–28 Jun | ? | ? | 26.9 | 22.6 | 3.0 | 1.5 | – | – | – | – | – | – | – | 11.7 | 19.3 | – | 4.3 |
| NC Report/La Razón | 22–27 Jun | 900 | 66.9 | 31.2 136/144 | 24.4 108/116 | 4.4 4/6 | 1.1 0/1 | – | 1.1 5 | 1.2 5 | 1.8 7/8 | 0.5 1 | 0.3 1 | 1.5 3 | 11.6 25/27 | 12.5 30/33 | 2.2 8/9 | 6.8 |
| InvyMark/laSexta | 22–26 Jun | 1,200 | ? | 25.9 | 23.0 | 1.9 | 0.4 | – | – | 1.4 | 2.7 | – | – | – | 13.2 | 23.0 | 2.6 | 2.9 |
| Demoscopia Servicios/esRadio | 16–26 Jun | 1,800 | ? | 29.2 131 | 24.4 92 | 2.8 2 | 0.6 0 | 2.6 12 | 1.0 5 | 1.2 6 | 1.6 6 | 0.4 0 | 0.7 3 | 0.7 3 | 11.8 23 | 20.2 65 | – | 4.8 |
| Encuestamos | 1–23 Jun | 1,450 | ? | 25.7 | 25.2 | 4.3 | – | 2.9 | 1.1 | 1.6 | 2.2 | 0.9 | 0.6 | 1.9 | 9.8 | 21.4 | – | 0.5 |
| TNS Demoscopia/Antena 3 | 8–21 Jun | ? | ? | 26.6 | 22.0 | 3.3 | 1.9 | – | – | – | – | – | – | – | 12.8 | 19.7 | – | 4.6 |
| JM&A/Público | 19 Jun | ? | ? | 26.8 118 | 22.7 95 | 3.9 2 | 0.6 0 | ? 11 | ? 3 | ? 5 | ? 7 | – | – | – | 14.7 43 | 17.1 58 | – | 3.3 |
| Sigma Dos/Mediaset | 15–17 Jun | 1,800 | ? | 27.0 | 26.1 | 4.1 | – | 2.5 | – | 1.5 | 2.5 | – | – | – | 10.3 | 20.2 | – | 0.9 |
| TNS Demoscopia/Antena 3 | 1–14 Jun | 1,087 | ? | 23.8 | 21.1 | 4.4 | 1.0 | – | – | – | – | – | – | – | 15.5 | 19.2 | – | 2.7 |
| Simple Lógica | 1–10 Jun | 1,026 | ? | 23.8 | 19.4 | 4.1 | 0.6 | 1.3 | – | 1.3 | – | – | – | – | 17.3 | 23.3 | – | 0.5 |
| NC Report/La Razón | 2–6 Jun | 900 | 66.6 | 29.7 134/144 | 24.2 106/108 | 4.9 5/7 | 1.4 0/1 | 2.5 10/12 | 1.0 5 | 1.3 5 | 1.9 7/9 | 0.5 1 | 0.3 1 | 1.4 2/3 | 11.6 28/30 | 12.1 28/30 | – | 5.5 |
| Celeste-Tel/eldiario.es | 1–5 Jun | 1,100 | 65.9 | 30.1 134/138 | 27.2 118/125 | 4.7 4/6 | 1.0 0 | 2.6 10/11 | 1.0 4/5 | 1.1 5/6 | 1.9 8/9 | 0.7 1/2 | 0.4 1/2 | 1.3 3 | 10.5 20/22 | 13.2 31/35 | – | 2.9 |
| Metroscopia/El País | 28 May–2 Jun | 2,000 | 72 | 24.5 | 23.0 | 4.1 | 0.4 | – | – | – | – | – | – | – | 13.0 | 21.5 | – | 1.5 |
| InvyMark/laSexta | 25–29 May | 1,200 | ? | 25.4 | 22.0 | 2.5 | 0.8 | 2.6 | – | 1.4 | 2.8 | – | – | – | 15.2 | 21.9 | – | 3.4 |
| 2015 local elections | 24 May | — | 64.8 | 27.0 | 25.0 | 4.9 | 1.0 | 3.0 | 1.4 | 1.6 | 2.3 | 0.8 | 0.7 | 1.7 | 6.6 | – | – | 2.0 |
| JM&A/Público | 18 May | ? | ? | ? 115 | ? 94 | ? 3 | ? 0 | ? 12 | ? 4 | ? 6 | ? 8 | – | – | – | ? 45 | ? 59 | – | ? |
| JM&A/Público | 13 May | ? | 65.3 | 25.7 111 | 22.4 93 | 3.7 2 | 0.6 0 | ? 12 | ? 4 | ? 6 | ? 8 | – | – | – | 15.3 46 | 17.7 64 | – | 3.3 |
| Simple Lógica | 4–12 May | 1,064 | ? | 25.9 | 19.2 | 3.9 | 1.7 | 2.0 | – | 1.3 | – | – | – | – | 18.9 | 18.6 | – | 6.7 |
| Encuestamos | 1–12 May | 1,000 | ? | 23.0 | 24.3 | 4.8 | 0.7 | 2.5 | 1.0 | 1.3 | 2.6 | 1.1 | 0.5 | 1.1 | 14.9 | 20.7 | – | 1.3 |
| Celeste-Tel | 4–8 May | 1,100 | 65.3 | 29.2 132/136 | 26.6 120/123 | 5.2 7/8 | 1.2 1/2 | 2.5 9/10 | 1.0 5/6 | 1.1 5/6 | 1.8 7/8 | 0.7 1/2 | 0.6 2 | 1.0 2/3 | 12.1 22/25 | 12.9 26/32 | – | 2.6 |
| NC Report/La Razón | 20–25 Apr | 900 | ? | 28.6 | 23.8 | 6.8 | 2.0 | – | – | – | – | – | – | – | 12.0 | 12.9 | – | 4.8 |
| MyWord/Cadena SER | 17–22 Apr | 1,000 | ? | 22.0 | 21.0 | 3.1 | 1.8 | – | – | – | – | – | – | – | 19.4 | 17.9 | – | 1.0 |
| Encuestamos | 2–20 Apr | 1,000 | ? | 22.9 | 24.0 | 4.5 | 0.9 | 2.8 | 1.1 | 1.0 | 3.0 | – | – | – | 15.8 | 21.2 | – | 1.1 |
| InvyMark/laSexta | 13–17 Apr | ? | ? | 26.2 | 21.0 | 2.9 | 1.0 | 2.7 | – | 1.3 | 2.7 | – | – | – | 17.6 | 19.4 | – | 5.2 |
| NC Report | 8–16 Apr | ? | ? | 28.6 | 23.7 | 6.6 | – | – | – | – | – | – | – | – | 11.7 | 13.2 | – | 4.9 |
| GESOP/El Periódico | 8–13 Apr | 1,000 | ? | 23.5 102/107 | 19.1 75/78 | 3.7 2/4 | 1.4 1/2 | 2.9 10/12 | – | – | 1.9 6/8 | – | – | – | 17.7 55/59 | 20.1 78/82 | – | 3.4 |
| Simple Lógica | 1–13 Apr | 1,059 | 67.4 | 21.3 | 21.1 | 4.1 | 1.2 | 2.0 | – | 1.3 | – | – | – | – | 20.8 | 21.3 | – | Tie |
| CIS | 1–12 Apr | 2,479 | ? | 25.6 112 | 24.3 102 | 4.8 ? | 1.9 ? | 3.2 ? | 0.9 ? | 0.7 ? | 2.0 ? | 0.6 ? | 0.5 ? | 0.8 ? | 13.8 41 | 16.5 57 | – | 1.3 |
| Sigma Dos/Mediaset | 7–9 Apr | 1,800 | ? | 26.6 | 19.7 | 4.4 | 1.1 | 2.1 | – | 1.2 | 2.3 | – | – | – | 16.6 | 20.9 | – | 5.7 |
| Metroscopia/El País | 7–9 Apr | 1,000 | 74 | 20.8 | 21.9 | 5.0 | 2.0 | – | – | – | – | – | – | – | 19.4 | 22.1 | – | 0.2 |
| Celeste-Tel | 1–8 Apr | 1,100 | 64.6 | 29.5 134/138 | 26.6 120/123 | 5.1 7/8 | 1.3 1/2 | 2.4 9/10 | 1.0 5/6 | 1.1 5/6 | 1.8 7/8 | 0.8 1/2 | 0.7 2 | 0.9 2/3 | 12.1 22/25 | 12.8 25/31 | – | 2.9 |
| NC Report/La Razón | 30 Mar–2 Apr | 900 | 65.6 | 29.7 136/142 | 23.5 99/107 | 6.0 8/10 | 2.4 2/3 | 2.7 11/12 | 0.9 5 | 1.2 5 | 2.1 8/9 | 0.4 1 | 0.4 2 | 0.7 2 | 10.5 21/27 | 14.1 35/41 | – | 6.2 |
| Intercampo/GETS | 13–29 Mar | 2,024 | 80 | 26.0– 27.0 | 27.0– 28.0 | 4.0– 5.0 | 1.0– 1.5 | 1.5– 2.0 | – | 1.0– 1.5 | 1.5– 2.5 | – | – | – | 10.0– 11.0 | 21.0– 22.0 | – | 1.0 |
| InvyMark/laSexta | 23–27 Mar | 1,200 | ? | 26.4 | 20.3 | 3.0 | 1.6 | – | – | – | – | – | – | – | 14.8 | 20.8 | – | 5.6 |
| Encuestamos | 26 Mar | 900 | ? | 23.7 | 23.6 | 3.8 | 2.5 | 3.1 | 1.3 | 1.2 | 2.1 | – | – | – | 14.7 | 21.7 | – | 0.1 |
| Simple Lógica | 2–13 Mar | 1,058 | 70.5 | 23.0 | 18.7 | 5.1 | 3.2 | 2.4 | – | 1.3 | – | – | – | – | 18.0 | 21.0 | – | 2.0 |
| MyWord/Cadena SER | 4–9 Mar | 1,000 | ? | 22.0 | 19.1 | 2.9 | 2.3 | – | – | – | – | – | – | – | 18.8 | 23.4 | – | 1.4 |
| Celeste-Tel | 2–6 Mar | 1,100 | 63.6 | 30.9 139/143 | 26.4 118/121 | 4.9 8/9 | 1.3 1/2 | 2.4 8/9 | 1.1 5/6 | 1.0 5/6 | 1.9 7/8 | 0.8 1/2 | 0.7 2/3 | 0.6 2 | 11.7 20/23 | 12.2 22/28 | – | 4.5 |
| Metroscopia/El País | 3–4 Mar | 1,000 | 74.6 | 18.6 | 20.2 | 5.6 | 3.6 | – | – | – | – | – | – | – | 18.4 | 22.5 | – | 2.3 |
| JM&A/El Español | 1 Mar | ? | 68.0 | 25.9 114 | 18.6 80 | 4.3 4 | 3.1 2 | 2.8 11 | 1.2 5 | 1.1 5 | 2.0 8 | 0.3 0 | 0.4 1 | 0.6 1 | 9.4 19 | 24.1 99 | – | 1.8 |
| Encuestamos | 26 Feb | 600 | ? | 25.5 | 19.9 | 4.5 | 3.8 | 3.2 | 1.4 | 1.3 | 2.2 | – | – | – | 10.1 | 25.4 | – | 0.1 |
| InvyMark/laSexta | 23–26 Feb | ? | ? | 27.8 | 21.5 | 3.8 | 4.0 | 2.8 | – | 1.3 | 2.8 | – | – | – | 6.4 | 23.6 | – | 4.2 |
| NC Report/La Razón | 15 Feb | ? | 65.4 | 29.3 125/136 | 22.8 87/91 | 5.5 6/9 | 3.8 2/4 | 2.6 11 | 0.8 4 | 1.2 6 | 2.0 9 | 0.4 1 | 0.4 2 | 0.6 2 | 3.3 7 | 22.5 71/74 | – | 6.5 |
| JM&A/El Español | 14 Feb | ? | 65.1 | 27.1 121 | 19.6 84 | 4.5 5 | 3.5 3 | 2.9 11 | 1.0 3 | 1.0 5 | 2.3 9 | 0.3 0 | 0.4 1 | 0.7 2 | 4.0 8 | 25.6 96 | – | 1.5 |
| Sigma Dos/Mediaset | 9–12 Feb | 1,800 | ? | 29.6 | 20.1 | 4.1 | 1.8 | 2.6 | – | 1.2 | 2.4 | – | – | – | 7.3 | 25.8 | – | 3.8 |
| MyWord/Cadena SER | 9–11 Feb | 1,000 | ? | 22.5 | 19.5 | 3.0 | 3.3 | – | – | – | – | – | – | – | 13.4 | 24.6 | – | 2.1 |
| Simple Lógica | 2–9 Feb | 1,058 | 71.0 | 26.8 | 17.8 | 3.4 | 3.6 | 3.0 | – | 1.0 | – | – | – | – | 8.5 | 29.6 | – | 2.8 |
| Celeste-Tel/eldiario.es | 2–6 Feb | 1,100 | 59.4 | 31.8 132/139 | 24.4 90/93 | 4.5 6/8 | 3.0 3/4 | 2.2 8/9 | 1.0 5/6 | 1.0 5/6 | 2.0 8/9 | 0.7 1/2 | 0.6 2/3 | 0.6 2 | 6.2 10/11 | 18.3 61/64 | – | 7.4 |
| Demoscopia Servicios/esRadio | 2–6 Feb | ? | ? | 28.3 133 | 21.8 75 | 4.9 9 | 3.9 7 | – | – | – | – | – | – | – | 4.5 10 | 25.3 78 | – | 3.0 |
| InvyMark/laSexta | 2–6 Feb | 1,200 | ? | 26.1 | 20.1 | 4.3 | 5.0 | 2.9 | – | 1.2 | 3.1 | – | – | – | 3.8 | 26.0 | – | 0.1 |
| Metroscopia/El País | 3–4 Feb | 1,000 | 72.0 | 20.9 | 18.3 | 6.5 | 4.5 | – | – | – | – | – | – | – | 12.2 | 27.7 | – | 6.8 |
| Sigma Dos/Mediaset | 26–29 Jan | 1,000 | ? | 27.1 | 21.4 | 4.8 | 4.0 | 2.5 | – | – | 2.4 | – | – | – | 5.0 | 26.3 | – | 0.8 |
| Encuestamos | 23 Jan | ? | ? | 22.0 | 19.1 | 6.0 | 4.1 | 3.8 | 1.4 | 1.3 | 2.3 | – | – | – | 7.6 | 30.2 | – | 8.2 |
| GAD3/ABC | 9–16 Jan | 1,000 | 76 | 29.3 132 | 19.2 80 | 3.7 2 | 4.8 5 | 2.8 11 | 1.0 3 | 1.3 6 | 1.8 8 | – | – | 1.4 1 | 6.3 11 | 21.1 89 | – | 8.2 |
| NC Report | 7–15 Jan | ? | ? | 29.3 | 23.0 | 5.4 | – | – | – | – | – | – | – | – | 3.8 | 23.2 | – | 6.1 |
| Sigma Dos/Mediaset | 12–14 Jan | 1,800 | ? | 29.4 | 19.4 | 4.7 | 4.1 | 2.7 | – | 1.1 | 2.7 | – | – | – | 4.6 | 26.2 | – | 3.2 |
| Simple Lógica | 7–14 Jan | 1,025 | 68.6 | 24.5 | 18.6 | 4.6 | 6.4 | 2.3 | – | 0.4 | – | – | – | – | 5.8 | 30.8 | – | 6.3 |
| CIS | 2–12 Jan | 2,481 | ? | 27.3 120 | 22.2 91 | 5.2 6 | 4.6 4 | 3.0 14 | 1.0 4 | 0.7 3 | 1.6 6 | 0.5 ? | 0.5 ? | 0.6 ? | 3.1 3 | 23.9 96 | – | 3.4 |
| PP | 9–10 Jan | ? | ? | 28.0– 29.0 | 20.0– 21.0 | – | – | – | – | – | – | – | – | – | – | 24.0– 26.0 | – | 3.0– 4.0 |
| Celeste-Tel/eldiario.es | 2–9 Jan | 1,100 | 60.2 | 31.1 128/135 | 23.8 89/92 | 4.7 7/9 | 2.7 3/4 | 2.1 9/10 | 1.1 6/7 | 1.0 5/6 | 2.0 9/10 | 0.6 1/2 | 0.5 2/3 | 0.6 2 | 4.5 9/10 | 20.9 62/65 | – | 7.3 |
| Metroscopia/El País | 7–8 Jan | 1,000 | 71.6 | 19.2 | 23.5 | 5.3 | 5.0 | – | – | – | – | – | – | – | 8.1 | 28.2 | – | 4.7 |
| MyWord/Cadena SER | 30 Dec–6 Jan | 1,001 | ? | 24.6 | 19.0 | 3.7 | 5.5 | 1.9 | – | – | 2.4 | – | – | – | 5.0 | 27.5 | – | 2.9 |

##### 2014

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | | | | | | PNV | | BNG | | | | | Lead |
| NC Report/La Razón | 9–30 Dec | 1,600 | 66.1 | 28.6 113/120 | 23.4 86/90 | 5.1 6/10 | 3.9 3/4 | 2.6 11/12 | 0.8 4 | 1.3 6 | 2.0 9/10 | ? 1 | ? 2 | ? 2 | 2.8 4/7 | 23.2 73/77 | 5.2 |
| InvyMark/laSexta | 15–19 Dec | 1,200 | ? | 25.5 | 22.0 | 4.5 | 5.2 | 2.9 | – | 1.2 | 3.1 | – | – | – | 3.1 | 25.3 | 0.2 |
| Sigma Dos/Mediaset | 12–18 Dec | 1,800 | ? | 26.5 | 18.7 | 5.3 | 4.4 | 2.8 | – | 1.1 | 2.8 | – | – | – | 3.1 | 28.7 | 2.2 |
| GESOP/El Periódico | 9–15 Dec | 1,000 | ? | 26.1 115/118 | 19.8 77/80 | 4.1 2/4 | 6.5 8/10 | 2.9 9/10 | – | – | 2.2 8/9 | – | – | – | 3.8 3/5 | 25.6 101/104 | 0.5 |
| DYM/El Confidencial | 13 Dec | ? | ? | 26.1 | 16.7 | 5.6 | 5.9 | – | – | – | – | – | – | – | 4.2 | 29.6 | 3.5 |
| Simple Lógica | 1–10 Dec | 1,039 | ? | 23.1 | 19.3 | 5.5 | 5.4 | 0.9 | – | 0.3 | – | – | – | – | – | 31.1 | 8.0 |
| Celeste-Tel/eldiario.es | 1–5 Dec | 1,100 | 60.7 | 29.9 125/130 | 24.1 89/94 | 4.9 10/11 | 3.2 5/6 | 2.0 9/10 | 1.0 6/7 | 1.0 5/6 | 2.1 9/10 | 0.6 1/2 | 0.6 2/3 | 0.7 2/3 | 3.9 8/10 | 21.7 60/66 | 5.8 |
| InvyMark/laSexta | 1–5 Dec | ? | ? | 25.7 | 21.8 | 4.6 | 5.5 | 3.0 | – | – | 3.1 | – | – | – | 2.7 | 24.8 | 0.9 |
| Sigma Dos/Mediaset | 2–4 Dec | 1,000 | ? | 26.5 | 19.6 | 4.8 | 4.4 | 2.6 | – | 1.0 | 2.6 | – | – | – | 2.4 | 29.1 | 2.6 |
| Metroscopia/El País | 2–3 Dec | 1,000 | 73 | 20.0 | 27.7 | 5.6 | 4.8 | – | – | – | – | – | – | – | – | 25.0 | 2.7 |
| Sigma Dos/El Mundo | 17–19 Nov | 1,000 | ? | 26.3 | 20.1 | 4.2 | 4.5 | 3.0 | 1.0 | 1.1 | 2.8 | – | – | – | 2.5 | 28.3 | 2.0 |
| JM&A | 14 Nov | ? | 66.9 | 27.7 123 | 22.0 94 | 5.5 10 | 4.0 5 | 2.9 12 | 1.0 3 | 1.0 4 | 2.6 10 | 0.3 0 | 0.4 1 | 0.6 1 | 2.6 3 | 22.0 80 | 5.7 |
| InvyMark/laSexta | 10–14 Nov | ? | ? | 26.0 | 21.6 | 5.0 | 5.8 | 2.9 | – | – | 3.2 | – | – | – | 2.3 | 24.7 | 1.3 |
| Simple Lógica | 1–12 Nov | 1,030 | ? | 25.0 | 18.2 | 3.6 | 4.7 | 2.3 | – | 0.7 | – | – | – | – | – | 31.1 | 6.1 |
| Celeste-Tel/eldiario.es | 3–7 Nov | 1,100 | 61.6 | 30.5 127/131 | 24.5 92/97 | 4.4 11/12 | 3.2 6/7 | 1.8 8/9 | 1.0 6/7 | 1.0 5/6 | 2.2 10/11 | 0.6 1/2 | 0.6 2/3 | 0.6 2/3 | 4.0 8/10 | 21.6 57/61 | 6.0 |
| DYM/El Confidencial | 28 Oct–6 Nov | 985 | ? | 26.9 | 19.5 | 7.3 | 3.2 | – | – | – | – | – | – | – | 5.6 | 26.3 | 0.6 |
| Llorente & Cuenca | 31 Oct | ? | ? | 25.1 | 22.6 | 8.7 | 7.8 | – | – | – | – | – | – | – | – | 19.5 | 2.5 |
| InvyMark/laSexta | 27–31 Oct | ? | ? | 26.4 | 20.5 | 5.4 | 6.0 | 2.6 | – | – | 3.4 | – | – | – | – | 22.7 | 3.7 |
| Metroscopia/El País | 28–29 Oct | 1,000 | 70.5 | 20.7 | 26.2 | 3.8 | 3.4 | – | – | – | – | – | – | – | – | 27.7 | 1.5 |
| Asturbarómetro/ICNdiario | 10–25 Oct | 402 | ? | 29.5 | 23.9 | 5.8 | 5.7 | – | – | – | – | – | – | – | – | 19.0 | 5.6 |
| InvyMark/laSexta | 13–17 Oct | ? | ? | 28.2 | 21.4 | 6.9 | 6.2 | 2.7 | – | 1.2 | 3.4 | – | – | – | – | 18.6 | 6.8 |
| Sigma Dos/Mediaset | 13–16 Oct | 1,100 | ? | 28.3 | 23.7 | 5.2 | 3.7 | 2.5 | – | 1.2 | 2.6 | – | – | – | 1.8 | 24.1 | 3.7 |
| CIS | 1–13 Oct | 2,480 | ? | 27.5 120 | 23.9 101 | 4.8 6 | 4.1 3 | 3.8 15 | 0.9 3 | 1.0 4 | 2.3 8 | 0.4 ? | 0.3 ? | 1.1 ? | 2.1 ? | 22.5 87 | 3.6 |
| Intercampo/GETS | 15 Sep–12 Oct | 1,724 | 60–70 | 20.0– 22.0 | 31.0– 34.0 | 6.0– 9.0 | 2.0– 3.0 | 1.0– 1.5 | – | 1.3– 1.6 | 2.5– 3.5 | – | – | – | – | 21.0– 24.0 | 10.0 |
| Simple Lógica | 3–10 Oct | ? | ? | 29.7 | 24.6 | 3.5 | 4.2 | 1.3 | – | 1.1 | – | – | – | – | – | 23.3 | 5.1 |
| JM&A | 9 Oct | ? | 60.4 | 32.6 147 | 21.6 90 | 5.5 9 | 5.4 8 | – | – | – | – | – | – | – | – | 16.4 54 | 11.0 |
| Celeste-Tel/eldiario.es | 1–7 Oct | 1,100 | 61.7 | 32.6 137/141 | 25.4 90/98 | 5.4 13/15 | 3.4 6/8 | 2.3 10/11 | 1.0 6/7 | 1.0 5/6 | 1.9 8/9 | 0.6 1/2 | 0.6 2/3 | 0.7 2/3 | 3.6 7/9 | 17.1 42/51 | 7.2 |
| InvyMark/laSexta | 29 Sep–3 Oct | ? | ? | 28.6 | 20.9 | 7.1 | 6.1 | 2.8 | – | 1.2 | 3.3 | – | – | – | – | 17.9 | 7.7 |
| Metroscopia/El País | 29–30 Sep | 1,000 | 70 | 30.2 | 30.9 | 5.2 | 3.4 | – | – | – | – | – | – | – | – | 13.8 | 0.7 |
| Demoscopia Servicios/esRadio | 22–26 Sep | ? | ? | 32.7 151 | 24.2 89 | 5.2 12 | 4.3 8 | ? 9 | ? 6 | ? 6 | ? 8 | – | – | – | 3.1 5 | 20.4 48 | 4.0 |
| InvyMark/laSexta | 15–19 Sep | ? | ? | 29.2 | 20.7 | 7.4 | 6.0 | 2.8 | – | 1.2 | 3.4 | – | – | – | – | 17.6 | 8.5 |
| NC Report | 8–12 Sep | 955 | ? | 34.2 | 23.3 | 5.8 | 4.4 | – | – | – | – | – | – | – | – | 16.5 | 10.9 |
| Simple Lógica | 5–12 Sep | ? | ? | 32.8 | 20.0 | 5.5 | 5.7 | 1.7 | – | 1.0 | – | – | – | – | – | 23.1 | 9.7 |
| Celeste-Tel | 1–5 Sep | 1,100 | 60.1 | 33.1 142/149 | 24.5 89/96 | 4.7 11/14 | 4.0 7/9 | 2.5 10/11 | 1.1 6/7 | 1.0 5/6 | 2.0 8/9 | 0.6 1/2 | 0.6 2/3 | 0.9 2/3 | 3.7 7/9 | 16.1 36/44 | 8.6 |
| NC Report/La Razón | 25–30 Aug | 900 | 61.3 | 33.9 132/138 | 23.4 89/93 | 5.6 9/13 | 4.4 7/10 | 2.8 9/11 | 1.2 6 | 1.3 5 | 2.2 8/10 | 0.6 1/2 | 1.0 2 | 0.9 2 | 2.6 4/6 | 15.0 56/60 | 10.5 |
| Sigma Dos/El Mundo | 26–28 Aug | 1,000 | ? | 30.1 | 22.3 | 4.1 | 5.6 | 3.0 | 1.0 | 1.0 | 3.3 | – | – | – | – | 21.2 | 7.8 |
| Simple Lógica | 1–8 Aug | 1,053 | ? | 29.4 | 16.7 | 4.1 | 5.4 | 1.4 | – | 0.8 | – | – | – | – | – | 28.4 | 1.0 |
| Celeste-Tel/eldiario.es | 18–24 Jul | 1,100 | 59.4 | 33.8 143/151 | 24.1 90/94 | 5.0 11/15 | 4.7 9/11 | 2.9 12/13 | 1.1 7/8 | 1.1 5/6 | 1.8 7/8 | 0.7 1/2 | 0.6 2/3 | 0.9 2/3 | 3.7 7/9 | 13.7 32/37 | 9.7 |
| Metroscopia/El País | 16–24 Jul | 1,200 | 71 | 32.3 | 31.7 | 4.9 | 3.3 | – | – | – | – | – | – | – | – | 10.7 | 0.6 |
| InvyMark/laSexta | 14–18 Jul | ? | ? | 26.4 | 22.7 | 11.2 | 7.5 | – | – | – | – | – | – | – | 3.1 | 12.1 | 3.7 |
| InvyMark/laSexta | 7–11 Jul | ? | ? | 26.5 | 22.4 | 11.3 | 7.3 | – | – | – | – | – | – | – | 3.0 | 11.8 | 4.1 |
| CIS | 1–9 Jul | 2,471 | ? | 30.0 142 | 21.2 93 | 8.2 15 | 5.9 9 | 2.9 12 | 1.0 4 | 1.0 5 | 3.3 13 | 0.5 ? | 0.3 ? | 1.4 ? | 0.9 ? | 15.3 52 | 8.8 |
| Simple Lógica | 1–8 Jul | 1,112 | ? | 29.0 | 15.1 | 6.2 | 7.9 | 1.1 | – | 1.6 | – | – | – | – | – | 27.1 | 1.9 |
| Demoscopia Servicios/esRadio | 5 Jul | ? | ? | 30.0 | 26.0 | 7.0 | 7.0 | – | – | – | – | – | – | – | – | 12.0 | 4.0 |
| Celeste-Tel/eldiario.es | 1–5 Jul | 1,100 | 58.8 | 33.5 144/149 | 23.2 89/92 | 5.1 12/15 | 4.9 9/12 | 3.0 12/13 | 1.1 7/8 | 1.1 5/6 | 1.7 6/7 | 0.6 1/2 | 0.6 2/3 | 0.8 2/3 | 3.7 6/8 | 14.1 34/37 | 10.3 |
| Simple Lógica | 2–14 Jun | 1,035 | ? | 28.8 | 14.7 | 6.0 | 6.4 | 2.4 | – | 1.6 | – | – | – | – | – | 26.7 | 2.1 |
| NC Report | 28 May–11 Jun | 955 | ? | 34.6 | 21.9 | 6.1 | 5.3 | – | – | – | – | – | – | – | – | 16.3 | 12.7 |
| Celeste-Tel/eldiario.es | 4–6 Jun | 1,100 | 57.9 | 32.4 139/142 | 22.3 94/98 | 5.6 13/15 | 5.7 12/14 | 3.0 12/13 | 1.2 7/8 | 1.1 6/7 | 1.9 7/8 | 0.6 1/2 | 0.6 2/3 | 0.9 2/3 | 3.7 5/6 | 13.9 28/32 | 10.1 |
| GESOP/El Periódico | 27–31 May | 1,000 | ? | 25.6 125/127 | 19.4 87/89 | 8.1 15/17 | 7.8 13/14 | 3.4 12/13 | – | – | 3.3 11/12 | – | – | – | 3.5 3/5 | 15.1 56/58 | 6.2 |
| 2014 EP election | 25 May | — | 43.8 | 26.1 (138) | 23.0 (105) | 10.0 (25) | 6.5 (10) | 3.5 (14) | 1.4 (8) | 1.4 (7) | 3.8 (15) | 0.5 (0) | 0.4 (2) | 0.9 (2) | 3.2 (4) | 8.0 (19) | 3.1 |
| Sigma Dos/El Mundo | 13–15 May | 1,111 | ? | 33.8 | 25.7 | 10.3 | 6.2 | – | – | – | – | – | – | – | 2.9 | 3.1 | 8.1 |
| Simple Lógica | 2–10 May | ? | ? | 30.9 | 22.9 | 12.4 | 12.3 | 2.7 | – | 1.8 | – | – | – | – | – | – | 8.0 |
| Celeste-Tel | 2–8 May | 1,100 | 57.9 | 32.4 138/147 | 29.0 114/118 | 12.1 25/27 | 7.3 11/13 | 2.6 11/12 | 1.4 7 | 1.3 6 | 1.8 6/7 | 0.8 2 | 0.8 3/4 | 0.9 3 | 2.0 3/4 | 1.8 1 | 3.4 |
| Feedback/La Vanguardia | 30 Apr–8 May | 1,500 | 56.9 | 34.9 144 | 27.1 105 | 12.5 38 | 9.2 24 | 3.9 13 | 1.5 6 | 1.4 5 | 2.4 7 | – | – | – | – | – | 7.8 |
| Sigma Dos/El Mundo | 10–15 Apr | 1,000 | ? | 33.1 | 30.2 | 10.4 | 7.2 | – | – | – | – | – | – | – | 2.3 | 1.2 | 2.9 |
| Simple Lógica | 1–9 Apr | 1,020 | ? | 28.4 | 23.8 | 11.5 | 13.3 | 3.5 | – | 1.4 | – | – | – | – | – | – | 4.6 |
| CIS | 1–7 Apr | 2,469 | ? | 31.9 | 26.2 | 10.9 | 8.9 | 3.0 | 1.3 | 1.1 | 2.5 | 0.6 | 0.4 | 1.7 | – | – | 5.7 |
| Celeste-Tel | 1–5 Apr | 1,100 | 57.5 | 32.3 139/149 | 28.9 115/118 | 12.5 26/28 | 7.5 12/14 | 2.7 11/12 | 1.6 7 | 1.4 6 | 1.9 6/7 | 0.9 2/3 | 0.9 3/4 | 1.0 3 | 1.4 3/4 | – | 3.4 |
| Metroscopia/El País | 25 Mar–1 Apr | 1,200 | 65 | 31.8 | 32.3 | 11.7 | 6.8 | – | – | – | – | – | – | – | – | – | 0.5 |
| NC Report | 3–14 Mar | 955 | ? | 33.3 | 27.8 | 12.3 | 7.8 | – | – | – | – | – | – | – | – | – | 5.5 |
| Simple Lógica | 3–7 Mar | 1,068 | 54.6 | 29.3 | 22.8 | 13.3 | 12.7 | 3.5 | – | 1.2 | – | – | – | – | – | – | 6.5 |
| Celeste-Tel | 1–6 Mar | 1,100 | 56.9 | 32.0 138/150 | 28.9 115/118 | 12.8 26/28 | 7.7 12/14 | 2.6 11/12 | 1.5 7 | 1.4 6 | 2.0 6/7 | 1.0 2 | 1.0 3 | 1.0 3 | 1.4 2/4 | – | 3.1 |
| Metroscopia/El País | 25 Feb–4 Mar | 1,200 | 65 | 31.5 | 32.0 | 12.0 | 7.0 | – | – | – | – | – | – | – | – | – | 0.5 |
| NC Report/La Razón | 28 Feb–1 Mar | 630 | 58.7 | 32.6 | 26.7 | 12.1 | 9.4 | 3.3 | 1.3 | 1.6 | 2.3 | 0.7 | 1.3 | 1.0 | – | – | 5.9 |
| InvyMark/laSexta | 24–28 Feb | ? | ? | 28.8 | 23.6 | 14.5 | 12.2 | – | – | – | – | – | – | – | – | – | 5.2 |
| MyWord/Cadena SER | 13–19 Feb | 1,000 | ? | 27.5 | 23.2 | 11.5 | 15.7 | – | – | – | – | – | – | – | – | – | 4.3 |
| InvyMark/laSexta | 10–14 Feb | ? | ? | 28.9 | 23.2 | – | – | – | – | – | – | – | – | – | – | – | 5.7 |
| GAD3/ABC | 5–13 Feb | 1,000 | ? | 32.3 148 | 26.3 115 | 10.7 21 | 10.1 20 | 3.3 12 | 1.3 6 | 1.3 6 | 2.1 7 | – | – | – | 0.9 1 | – | 6.0 |
| Simple Lógica | 3–10 Feb | 1,119 | ? | 29.6 | 20.3 | 14.9 | 11.8 | 3.8 | – | 1.0 | – | – | – | – | – | – | 9.3 |
| Metroscopia/El País | 5–6 Feb | 1,200 | 65 | 30.8 | 31.7 | 13.5 | 8.5 | – | – | – | – | – | – | – | – | – | 0.9 |
| Celeste-Tel/eldiario.es | 1–6 Feb | 1,100 | 56.6 | 31.6 137/148 | 28.7 114/118 | 13.1 26/29 | 7.8 12/14 | 2.4 11/12 | 1.6 8 | 1.2 6 | 2.1 7/8 | 0.9 2 | 0.8 3 | 1.1 3 | 1.4 2/4 | – | 2.9 |
| InvyMark/laSexta | 20–24 Jan | ? | ? | 28.7 | 23.3 | 14.7 | 12.5 | – | – | – | – | – | – | – | – | – | 5.4 |
| GESOP/El Periódico | 20–23 Jan | 1,000 | ? | 28.6 126/129 | 24.9 104/107 | 13.2 37/39 | 11.5 30/32 | 3.3 12/13 | – | – | 2.1 7/8 | – | – | – | 4.1 2/4 | – | 3.7 |
| CIS | 3–15 Jan | 2,480 | ? | 32.1 150 | 26.6 112 | 11.3 26 | 9.2 18 | 3.4 13 | 1.2 6 | 1.5 7 | 2.5 9 | 0.7 ? | 1.0 ? | 0.8 ? | – | – | 5.5 |
| InvyMark/laSexta | 4–11 Jan | ? | ? | 28.5 | 23.4 | 14.7 | 12.7 | – | – | – | – | – | – | – | – | – | 5.1 |
| Simple Lógica | 2–10 Jan | 1,030 | ? | 28.1 | 22.0 | 14.8 | 13.0 | 2.6 | – | 1.9 | – | – | – | – | – | – | 6.1 |
| Metroscopia/El País | 8–9 Jan | 1,200 | 65 | 32.0 | 33.5 | 12.5 | 7.3 | – | – | – | – | – | – | – | – | – | 1.5 |
| Celeste-Tel/eldiario.es | 2–7 Jan | 1,100 | 56.3 | 32.1 139/149 | 28.8 114/118 | 13.2 27/29 | 7.7 12/14 | 2.3 11 | 1.6 8 | 1.3 6 | 2.2 8 | 0.9 2 | 0.9 3/4 | 1.1 3 | 1.3 2/3 | – | 3.3 |

##### 2013

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | | | | | | PNV | | BNG | | | | Lead |
| Sigma Dos/El Mundo | 26–28 Dec | 1,000 | ? | 33.3 | 24.4 | 14.7 | 9.8 | 3.6 | 1.0 | 1.6 | 2.6 | – | – | – | – | 8.9 |
| InvyMark/laSexta | 16–20 Dec | ? | ? | 28.2 | 23.6 | 14.6 | 12.7 | – | – | – | – | – | – | – | – | 4.6 |
| Simple Lógica | 2–10 Dec | 1,044 | ? | 30.7 | 22.8 | 14.1 | 13.6 | 2.8 | – | 1.5 | – | – | – | – | – | 7.9 |
| Celeste-Tel/eldiario.es | 1–5 Dec | 1,100 | 55.4 | 32.0 138/148 | 28.6 114/118 | 13.1 27/30 | 7.8 12/14 | 2.3 11 | 1.7 8 | 1.3 6 | 2.3 8/9 | 0.9 2 | 0.9 4 | 1.1 3 | 1.3 2/3 | 3.4 |
| Metroscopia/El País | 30 Nov | 12,000 | 65 | 33.9 146 | 31.5 131 | 12.0 25 | 7.1 11 | 2.8 11 | 1.2 5 | 1.5 7 | 2.2 8 | 0.6 1 | 0.5 2 | 0.6 2 | – | 2.4 |
| GESOP/El Periódico | 25–28 Nov | 1,000 | ? | 29.5 132/136 | 25.1 104/108 | 12.9 32/34 | 11.1 28/29 | 3.0 11/12 | – | – | 2.5 8/9 | – | – | – | 4.0 2/4 | 4.4 |
| NC Report | 18–28 Nov | 955 | ? | 34.2 | 28.4 | 12.2 | 7.4 | – | – | – | – | – | – | – | – | 5.8 |
| InvyMark/laSexta | 18–22 Nov | ? | ? | 28.4 | 23.3 | 14.5 | 12.9 | – | – | – | – | – | – | – | – | 5.1 |
| Sigma Dos/El Mundo | 12–14 Nov | 1,000 | ? | 30.6 | 27.0 | 13.4 | 10.1 | 3.6 | 1.2 | 1.4 | 2.6 | – | – | – | – | 3.6 |
| GAD3/Antena 3 | 11–14 Nov | 801 | ? | 33.1 150 | 28.5 122 | 9.2 16 | 11.2 21 | 3.6 12 | 1.3 6 | 1.3 6 | 2.1 7 | – | – | – | – | 7.4 |
| Simple Lógica | 4–13 Nov | 1,959 | ? | 30.9 | 21.7 | 12.2 | 14.8 | 2.3 | – | 1.6 | – | – | – | – | – | 9.2 |
| InvyMark/laSexta | 4–8 Nov | ? | ? | 28.2 | 23.1 | 14.7 | 13.2 | – | – | – | – | – | – | – | – | 5.1 |
| Celeste-Tel | 2–7 Nov | 1,100 | 55.1 | 31.8 138/147 | 28.2 113/117 | 13.3 27/30 | 7.9 12/14 | 2.3 11 | 1.7 8 | 1.4 7 | 2.4 8 | 0.9 2 | 0.9 4 | 1.2 3 | 1.4 3 | 3.6 |
| MyWord/Cadena SER | 30 Oct–4 Nov | 1,000 | ? | 27.1 | 22.7 | 13.5 | 15.6 | – | – | – | – | – | – | – | – | 4.4 |
| DYM/El Confidencial | 22–31 Oct | 967 | ? | 32.5 | 21.2 | 17.3 | 11.0 | – | – | – | – | – | – | – | – | 11.3 |
| InvyMark/laSexta | 14–18 Oct | ? | ? | 27.2 | 23.4 | 14.8 | 13.3 | – | – | – | – | – | – | – | – | 3.8 |
| Intercampo/GETS | 16 Sep–14 Oct | 1,726 | High | 28.3 | 34.8 | 12.7 | 6.8 | 2.3 | – | 1.6 | 2.2 | – | – | – | – | 6.5 |
| Intercampo/GETS | 16 Sep–14 Oct | 1,726 | Low | 26.5 | 35.6 | 13.8 | 7.2 | 2.4 | – | 1.8 | 2.6 | – | – | – | – | 9.1 |
| NC Report/La Razón | 2–11 Oct | 920 | 58.8 | 35.0 150/154 | 26.9 106/110 | 12.2 26/28 | 7.8 13/14 | 2.8 12 | 1.6 7 | 1.6 6 | 2.2 8 | – | – | – | – | 8.1 |
| GAD3/Antena 3 | 7–10 Oct | 805 | ? | 33.2 154 | 25.8 109 | 13.3 28 | 8.6 16 | 3.0 10 | 1.4 7 | 1.4 6 | 2.6 8 | – | – | – | – | 7.4 |
| CIS | 1–9 Oct | 2,485 | ? | 34.0 161 | 26.8 111 | 11.3 24 | 7.7 12 | 2.9 12 | 1.2 7 | 1.2 5 | 2.5 9 | 1.1 ? | 0.5 ? | 0.5 ? | – | 7.2 |
| Simple Lógica | 1–7 Oct | 1,001 | 51.0 | 27.5 | 21.6 | 12.6 | 13.8 | 3.0 | – | 1.6 | – | – | – | – | – | 5.9 |
| Celeste-Tel | 1–5 Oct | 1,100 | 53.9 | 31.5 137/143 | 28.1 114/116 | 13.7 28/31 | 8.0 12/15 | 2.4 11 | 1.6 8 | 1.4 7 | 2.3 8 | 0.8 2 | 0.9 4 | 1.2 3 | 1.3 3 | 3.4 |
| Metroscopia/El País | 2–3 Oct | 1,000 | 62 | 34.1 | 29.0 | 11.5 | 9.1 | – | – | – | – | – | – | – | – | 5.1 |
| InvyMark/laSexta | 23–27 Sep | ? | ? | 26.0 | 23.5 | 14.8 | 13.2 | – | – | – | – | – | – | – | – | 2.5 |
| NC Report | 9–20 Sep | 955 | ? | 33.8 | 26.5 | 12.7 | 7.5 | – | – | – | – | – | – | – | – | 7.3 |
| GAD3/Antena 3 | 10–13 Sep | 935 | ? | 32.4 147 | 27.4 118 | 12.8 27 | 9.3 17 | 3.1 11 | 1.4 7 | 1.4 6 | 2.1 7 | – | – | – | – | 5.0 |
| InvyMark/laSexta | 9–13 Sep | ? | ? | 26.1 | 23.6 | 14.7 | 13.1 | – | – | – | – | – | – | – | – | 2.5 |
| Simple Lógica | 3–9 Sep | ? | ? | 28.1 | 23.3 | 14.9 | 13.3 | 2.6 | – | 0.9 | – | – | – | – | – | 4.8 |
| Celeste-Tel | 2–6 Sep | 1,100 | 52.3 | 30.9 137/140 | 27.8 114/115 | 14.2 28/31 | 8.3 13/16 | 2.6 11 | 1.7 8 | 1.5 7 | 2.3 8 | 0.8 2 | 0.9 4 | 1.3 3 | 1.2 3 | 3.1 |
| Feedback/La Vanguardia | 2–6 Sep | 1,500 | 58.6 | 37.9 153 | 25.2 98 | 12.0 37 | 9.6 25 | 3.4 13 | 1.4 6 | 1.2 5 | 2.1 7 | – | – | – | – | 12.7 |
| Metroscopia/El País | 4–5 Sep | 700 | 62 | 30.1 | 30.5 | 11.6 | 9.0 | – | – | – | – | – | – | – | – | 0.4 |
| MyWord/Cadena SER | 26–30 Aug | 1,000 | ? | 28.4 | 20.9 | 15.0 | 14.8 | – | – | – | – | – | – | – | – | 7.5 |
| Simple Lógica | 1–10 Aug | 1,025 | ? | 29.6 | 22.2 | 16.5 | 10.2 | 1.9 | – | 1.1 | – | – | – | – | – | 7.4 |
| TNS Demoscopia | 29–31 Jul | 1,000 | 57 | 30.0 | 25.0 | 15.0 | 10.0 | – | – | – | – | – | – | – | – | 5.0 |
| Celeste-Tel | 26–31 Jul | 1,100 | 50.8 | 31.3 139/142 | 27.1 114/115 | 14.0 28/29 | 8.2 13/14 | 2.6 11 | 1.7 8 | 1.5 7 | 2.2 8 | 0.7 1/2 | 0.9 4 | 1.3 3 | 1.4 3 | 4.2 |
| Metroscopia/El País | 24–25 Jul | 1,000 | 65 | 34.7 148 | 27.5 127 | 11.4 28 | 7.7 12 | – | – | – | – | – | – | – | – | 7.2 |
| Metroscopia/El País | 24–25 Jul | 1,000 | 52 | 23.0 | 22.8 | 16.2 | 11.8 | – | – | – | – | – | – | – | – | 0.2 |
| Sigma Dos/El Mundo | 16–18 Jul | 1,000 | ? | 30.7 | 27.8 | 14.3 | 8.3 | 4.2 | 1.1 | 1.4 | 1.6 | – | – | – | – | 2.9 |
| CIS | 1–10 Jul | 2,476 | ? | 32.5 150 | 27.2 114 | 11.5 26 | 8.8 16 | 3.1 13 | 1.4 7 | 1.4 6 | 2.3 9 | 0.7 ? | 0.5 ? | 0.9 ? | – | 5.3 |
| Simple Lógica | 1–9 Jul | 1,012 | ? | 25.8 | 24.2 | 14.7 | 12.3 | 3.4 | – | 1.5 | – | – | – | – | – | 1.6 |
| Celeste-Tel | 1–5 Jul | 1,100 | 51.2 | 31.7 138/144 | 27.0 111/116 | 13.6 26/28 | 8.0 11/14 | 2.7 11 | 1.6 7 | 1.6 7 | 2.2 8 | 0.7 1/2 | 0.9 4 | 1.4 3/4 | 1.4 3/4 | 4.7 |
| InvyMark/laSexta | 1–5 Jul | ? | ? | 29.1 | 24.5 | – | – | – | – | – | – | – | – | – | – | 4.6 |
| Metroscopia/El País | 3–4 Jul | 1,000 | 52 | 23.0 | 21.6 | 16.6 | 13.0 | – | – | – | – | – | – | – | – | 1.4 |
| GESOP/El Periódico | 25–28 Jun | 1,000 | ? | 28.1 118/122 | 25.5 104/107 | 15.6 48/50 | 12.2 31/33 | 3.0 11/12 | – | – | 2.1 7/9 | – | – | – | – | 2.6 |
| MyWord/Cadena SER | 14–18 Jun | 1,000 | ? | 30.3 | 22.0 | 15.2 | 17.7 | – | – | – | – | – | – | – | – | 8.3 |
| InvyMark/laSexta | 10–14 Jun | ? | ? | 28.9 | 24.4 | – | – | – | – | – | – | – | – | – | – | 4.5 |
| Simple Lógica | 3–11 Jun | 1,018 | ? | 31.9 | 21.2 | 12.9 | 10.6 | 3.7 | – | 1.3 | – | – | – | – | – | 10.7 |
| Celeste-Tel | 3–7 Jun | 1,100 | 49.9 | 30.9 136/144 | 26.5 110/115 | 13.8 26/28 | 8.4 13/15 | 2.9 12 | 1.5 7 | 1.6 7 | 2.1 7 | 0.6 1 | 0.9 4 | 1.5 3/4 | 1.6 3/4 | 4.4 |
| Metroscopia/El País | 5–6 Jun | 1,000 | 52 | 24.5 | 21.5 | 16.8 | 13.4 | – | – | – | – | – | – | – | – | 3.0 |
| Asturbarómetro/El Comercio | 5 May–3 Jun | 403 | ? | 39.7 | 25.6 | 14.3 | 8.6 | – | – | – | – | – | – | – | – | 14.1 |
| GAD3/Antena 3 | 27–30 May | 1,000 | ? | 34.1 155 | 25.7 111 | 12.5 26 | 9.7 19 | 3.2 10 | – | – | – | – | – | – | – | 8.4 |
| NC Report | 13–23 May | 955 | ? | 32.6 | 25.2 | 12.5 | 7.8 | – | – | – | – | – | – | – | – | 7.4 |
| Metroscopia/El País | 18 May | 14,000 | 55 | 28.6 139 | 25.1 90 | 15.9 48 | 10.7 30 | 2.9 10 | 1.5 7 | 1.1 5 | 2.7 9 | 1.0 5 | 0.8 4 | 0.6 2 | – | 3.5 |
| Sigma Dos/El Mundo | 8–10 May | 1,000 | ? | 35.4 | 25.3 | 13.4 | 9.6 | 4.3 | 1.0 | 1.4 | 1.5 | – | – | – | – | 10.1 |
| InvyMark/laSexta | 6–10 May | ? | ? | 29.0 | 24.5 | – | – | – | – | – | – | – | – | – | – | 4.5 |
| Simple Lógica | 3–10 May | 987 | ? | 29.2 | 22.4 | 14.0 | 12.6 | 1.7 | – | 1.2 | – | – | – | – | – | 6.8 |
| Metroscopia/El País | 8–9 May | 1,000 | 52 | 22.5 | 20.2 | 16.6 | 13.1 | – | – | – | – | – | – | – | – | 2.3 |
| MyWord/Cadena SER | 2–8 May | 1,000 | ? | 28.7 | 24.4 | 13.3 | 14.9 | – | – | – | – | – | – | – | – | 4.3 |
| Celeste-Tel | 2–7 May | 1,100 | 46.6 | 30.5 134/144 | 26.7 110/116 | 14.0 26/29 | 8.9 13/16 | 3.0 12 | 1.6 7 | 1.5 7 | 2.2 7 | 0.5 1 | 1.0 4 | 1.6 3/4 | 1.7 3/4 | 3.8 |
| InvyMark/laSexta | 8–12 Apr | ? | ? | 29.2 | 24.9 | – | – | – | – | – | – | – | – | – | – | 4.3 |
| Simple Lógica | 1–8 Apr | 1,010 | ? | 29.2 | 21.4 | 13.6 | 11.8 | 2.8 | – | 1.7 | – | – | – | – | – | 7.8 |
| CIS | 1–8 Apr | 2,482 | ? | 34.0 155 | 28.2 122 | 9.9 20 | 7.4 12 | 3.4 15 | 0.9 4 | 1.2 6 | 2.0 7 | 0.7 ? | 0.9 ? | 0.5 ? | – | 5.8 |
| Celeste-Tel | 1–5 Apr | 1,100 | 44.1 | 30.4 136/145 | 27.1 112/118 | 13.9 26/28 | 8.6 13/15 | 3.2 12 | 1.6 7 | 1.5 7 | 2.1 6 | 0.5 1 | 1.1 4 | 1.7 3/4 | 1.6 3/4 | 3.3 |
| Metroscopia/El País | 3–4 Apr | 1,000 | 53 | 24.5 | 23.0 | 15.6 | 13.7 | – | – | – | – | – | – | – | – | 1.5 |
| InvyMark/laSexta | 18–22 Mar | ? | ? | 29.1 | 25.0 | – | – | – | – | – | – | – | – | – | – | 4.1 |
| Simple Lógica | 4–8 Mar | 1,017 | 48.3 | 31.2 | 21.5 | 14.2 | 11.2 | 2.2 | – | 1.2 | – | – | – | – | – | 9.7 |
| Celeste-Tel | 1–6 Mar | 1,100 | 44.3 | 29.4 134/146 | 27.8 114/120 | 13.8 25/28 | 8.6 13/16 | 3.4 13 | 1.6 7 | 1.5 7 | 2.0 5 | 0.6 1 | 1.1 4 | 1.8 3/4 | – | 1.6 |
| InvyMark/laSexta | 25 Feb–1 Mar | ? | ? | 29.0 | 25.0 | – | – | – | – | – | – | – | – | – | – | 4.0 |
| Metroscopia/El País | 27–28 Feb | 1,000 | 53 | 24.3 | 23.1 | 15.4 | 10.0 | – | – | – | – | – | – | – | – | 1.2 |
| InvyMark/laSexta | 11–15 Feb | ? | ? | 29.4 | 24.8 | – | – | – | – | – | – | – | – | – | – | 4.6 |
| Sigma Dos/El Mundo | 6–8 Feb | 1,000 | ? | 33.5 | 28.2 | 12.3 | 10.0 | 4.0 | 1.3 | 1.3 | 1.4 | – | – | – | – | 5.3 |
| Simple Lógica | 4–8 Feb | ? | ? | 33.3 | 24.2 | 13.0 | 9.9 | 3.2 | – | 1.5 | – | – | – | – | – | 9.1 |
| Celeste-Tel | 1–6 Feb | 1,100 | 49.2 | 29.8 136/146 | 28.6 117/121 | 12.8 23/25 | 9.1 14/17 | 3.7 14 | 1.6 7 | 1.6 7 | 1.6 4/5 | 0.6 1 | 1.0 3/4 | 1.8 3/4 | – | 1.2 |
| Metroscopia/El País | 30 Jan–1 Feb | 2,000 | 53 | 23.9 | 23.5 | 15.3 | 13.6 | – | – | – | – | – | – | – | – | 0.4 |
| GESOP/El Periódico | 25–29 Jan | 1,000 | ? | 30.2 133/135 | 28.0 120/123 | 12.3 22/25 | 11.5 23/26 | 3.0 13/15 | – | – | 1.7 6/7 | – | – | – | – | 2.2 |
| InvyMark/laSexta | 21–25 Jan | ? | ? | 30.0 | 24.7 | – | – | – | – | – | – | – | – | – | – | 5.3 |
| NC Report | 10–21 Jan | 955 | ? | 36.5 | 26.3 | 11.8 | 7.7 | – | – | – | – | – | – | – | – | 10.2 |
| CIS | 4–14 Jan | 2,483 | ? | 35.0 155 | 30.2 125 | 9.4 18 | 6.8 10 | 3.6 15 | 0.9 4 | 1.3 7 | 2.0 7 | 0.8 ? | 0.9 ? | 1.1 ? | – | 4.8 |
| InvyMark/laSexta | 8–11 Jan | ? | ? | 30.6 | 24.8 | – | – | – | – | – | – | – | – | – | – | 5.8 |
| Simple Lógica | 7–11 Jan | ? | ? | 32.5 | 25.5 | 13.2 | 10.5 | 3.2 | – | 1.4 | – | – | – | – | – | 7.0 |
| Metroscopia/El País | 9–10 Jan | 1,000 | 61 | 29.8 | 23.3 | 15.6 | 10.1 | – | – | – | – | – | – | – | – | 6.5 |
| Celeste-Tel | 2–9 Jan | 1,100 | 58.9 | 32.8 146/154 | 28.6 113/117 | 12.0 21/23 | 8.2 10/13 | 3.8 14/15 | 1.5 7 | 1.6 7 | 1.7 5/6 | 0.7 1/2 | 0.9 3/4 | 1.6 3 | – | 4.6 |

##### 2012

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | | | | | | PNV | | BNG | | | Lead |
| Sigma Dos/El Mundo | 21–28 Dec | 1,000 | ? | 36.7 | 30.7 | 9.8 | 7.1 | 4.0 | 1.3 | 1.2 | 1.2 | – | – | – | 6.0 |
| InvyMark/laSexta | 17–21 Dec | ? | ? | 30.9 | 24.7 | – | – | – | – | – | – | – | – | – | 6.2 |
| Celeste-Tel | 3–12 Dec | 1,100 | 58.4 | 33.1 147/154 | 28.5 112/117 | 11.8 21/23 | 8.5 11/13 | 3.6 14/15 | 1.5 7 | 1.5 7 | 1.8 5/6 | 0.7 1/2 | 0.7 3/4 | 1.6 3 | 4.6 |
| Simple Lógica | 3–10 Dec | 1,009 | ? | 33.6 | 23.0 | 13.5 | 9.9 | 3.2 | – | 1.4 | – | – | – | – | 10.6 |
| Metroscopia/El País | 28–29 Nov | 1,000 | 61 | 31.3 | 22.7 | 13.3 | 10.2 | – | – | – | – | – | – | – | 8.6 |
| Celeste-Tel | 5–9 Nov | 1,100 | 58.4 | 33.6 148/153 | 28.3 112/115 | 12.0 22/25 | 8.4 11/13 | 3.6 15 | 1.5 7 | 1.7 7 | 1.9 6 | 0.7 1/2 | 0.8 4 | 1.4 3 | 5.3 |
| InvyMark/laSexta | 5–9 Nov | ? | ? | 32.0 | 26.0 | – | – | – | – | – | – | – | – | – | 6.0 |
| Simple Lógica | 1–8 Nov | 1,025 | ? | 34.5 | 24.3 | 13.4 | 10.1 | 3.8 | – | 1.0 | – | – | – | – | 10.2 |
| Metroscopia/El País | 6–7 Nov | 1,000 | 61 | 31.8 | 22.9 | 12.9 | 8.5 | – | – | – | – | – | – | – | 8.9 |
| MyWord/Cadena SER | 26–31 Oct | 1,000 | ? | 33.0 | 22.3 | 9.4 | 11.9 | – | – | – | – | – | – | – | 10.7 |
| InvyMark/laSexta | 22–26 Oct | ? | ? | 32.9 | 26.7 | – | – | – | – | – | – | – | – | – | 6.2 |
| Intercampo/GETS | 15 Sep–17 Oct | 1,724 | High | 29.4 | 27.3 | 12.1 | 8.9 | 4.4 | – | 1.7 | 1.0 | – | – | – | 2.1 |
| Intercampo/GETS | 15 Sep–17 Oct | 1,724 | Low | 32.6 | 30.1 | 11.8 | 7.8 | 4.3 | – | 1.7 | 1.0 | – | – | – | 2.5 |
| CIS | 2–14 Oct | 2,484 | ? | 35.9 163 | 28.6 119 | 9.4 18 | 7.3 11 | 3.9 17 | 1.6 7 | 1.4 6 | 1.3 3 | 0.7 ? | 0.4 ? | 0.7 ? | 7.3 |
| Simple Lógica | 1–11 Oct | ? | ? | 34.1 | 24.5 | 11.6 | 9.1 | 3.9 | – | 1.8 | – | – | – | – | 9.6 |
| Celeste-Tel | 1–5 Oct | 1,100 | 57.4 | 32.8 148/151 | 28.0 112/114 | 12.7 24/26 | 9.0 12/14 | 3.8 16 | 1.6 7 | 1.7 7 | 1.5 5 | 0.8 2 | 0.8 4 | 1.4 3 | 4.8 |
| Metroscopia/El País | 3–4 Oct | 1,000 | 60 | 29.9 | 23.9 | 12.6 | 10.2 | – | – | – | – | – | – | – | 6.0 |
| NC Report | 25–30 Sep | ? | ? | 38.6 | 26.7 | – | – | – | – | – | – | – | – | – | 11.9 |
| InvyMark/laSexta | 17–21 Sep | ? | ? | 34.1 | 29.9 | – | – | – | – | – | – | – | – | – | 4.2 |
| Simple Lógica | 3–13 Sep | 1,776 | 52.8 | 34.7 | 26.0 | 10.7 | 8.6 | 2.5 | – | 1.0 | – | – | – | – | 8.7 |
| MyWord/Cadena SER | 7–12 Sep | 1,100 | ? | 31.1 | 24.8 | 11.3 | 13.0 | – | – | – | – | – | – | – | 6.3 |
| Celeste-Tel | 3–7 Sep | 1,100 | 59.9 | 34.0 150/153 | 29.9 119/121 | 10.8 20/21 | 8.6 12/13 | 4.0 15 | 1.6 7 | 1.6 6 | 1.2 4 | 0.8 2 | 0.8 3/4 | 1.7 3/4 | 4.1 |
| Metroscopia/El País | 5–6 Sep | 1,000 | 60 | 30.9 | 24.1 | 12.4 | 9.8 | – | – | – | – | – | – | – | 6.8 |
| Simple Lógica | 1–10 Aug | 2,009 | ? | 36.4 | 24.7 | 11.0 | 9.5 | 3.4 | – | 0.7 | – | – | – | – | 11.7 |
| NC Report | 26–31 Jul | 955 | ? | 35.9 | 28.3 | – | – | – | – | – | – | – | – | – | 7.6 |
| Celeste-Tel | 23–27 Jul | 1,100 | 60.3 | 34.2 152/154 | 29.5 118/121 | 10.7 19/20 | 8.7 12/13 | 4.3 15 | 1.5 7 | 1.7 6 | 1.3 4/5 | 1.1 2/3 | 0.6 2/3 | 1.9 3/4 | 4.7 |
| Metroscopia/El País | 25–26 Jul | 1,000 | 59 | 30.0 | 24.7 | 12.3 | 9.9 | – | – | – | – | – | – | – | 5.3 |
| Sigma Dos/El Mundo | 17–19 Jul | 1,000 | ? | 35.8 | 29.6 | 11.7 | 7.8 | 4.1 | 1.3 | 1.4 | 1.1 | – | – | – | 6.2 |
| Simple Lógica | 2–10 Jul | 1,006 | ? | 37.2 | 27.7 | 10.2 | 9.3 | 3.7 | – | 0.6 | – | – | – | – | 9.5 |
| CIS | 2–10 Jul | 2,484 | ? | 36.6 | 29.9 | 8.6 | 6.6 | 4.0 | 1.2 | 1.5 | 1.3 | 0.7 | 0.7 | 0.8 | 6.7 |
| Celeste-Tel | 2–6 Jul | 1,100 | 62.8 | 40.6 164/168 | 29.4 117/125 | 10.2 19/20 | 5.1 5/7 | 4.2 15 | 1.5 6 | 1.6 7 | 1.1 3/5 | 1.2 3 | 0.7 2/3 | 1.0 1/3 | 11.2 |
| InvyMark/laSexta | 2–6 Jul | ? | ? | 40.5 | 31.8 | – | – | – | – | – | – | – | – | – | 8.7 |
| Metroscopia/El País | 4–5 Jul | 1,000 | 65 | 37.0 | 23.1 | 13.2 | 7.8 | – | – | – | – | – | – | – | 13.9 |
| DYM/ABC | 27–28 Jun | 857 | ? | 36.8 | 23.1 | 13.9 | 7.5 | 4.3 | – | 1.8 | – | – | – | – | 13.7 |
| GESOP/El Periódico | 14–18 Jun | 1,000 | ? | 38.1 168/172 | 28.1 109/112 | 10.2 19/20 | 7.5 11/12 | 3.7 15/16 | 1.1 5/6 | 1.5 6/7 | 1.0 2/3 | – | – | – | 10.0 |
| PP | 16 Jun | ? | ? | 38.0– 39.0 | 29.0– 29.5 | 9.0– 9.5 | 7.5– 8.0 | – | – | – | – | – | – | – | 9.0– 9.5 |
| Simple Lógica | 1–15 Jun | 1,017 | ? | 39.2 | 24.4 | 10.7 | 6.8 | 2.5 | – | 1.7 | – | – | – | – | 14.8 |
| Sigma Dos/El Mundo | 12–14 Jun | 1,000 | ? | 39.1 | 29.2 | 9.3 | 6.8 | 4.4 | 1.4 | 1.4 | 1.2 | – | – | – | 9.9 |
| Metroscopia/El País | 6–7 Jun | 1,004 | 65 | 37.1 | 25.9 | 12.0 | 5.9 | – | – | – | – | – | – | – | 11.2 |
| Celeste-Tel | 1–7 Jun | 1,100 | 63.2 | 40.8 164/170 | 29.3 118/125 | 10.4 20/22 | 5.1 5/8 | 4.0 15 | 1.4 7 | 1.5 7 | 0.9 3/5 | 1.1 3 | 0.6 2 | 1.0 1/3 | 11.5 |
| NC Report | 21–30 May | 955 | ? | 42.7 | 27.9 | – | – | – | – | – | – | – | – | – | 14.8 |
| Simple Lógica | 1–11 May | 1,015 | 64.2 | 39.9 | 27.1 | 10.6 | 6.5 | 2.7 | – | 0.9 | – | – | – | – | 12.8 |
| Metroscopia/El País | 9–10 May | 1,001 | 65 | 37.2 | 25.8 | 12.2 | 6.1 | – | – | – | – | – | – | – | 11.4 |
| Celeste-Tel | 2–8 May | 1,100 | 64.8 | 41.1 166/170 | 28.8 117/123 | 10.5 20/21 | 5.1 5/7 | 3.7 14 | 1.5 6 | 1.6 7 | 1.0 3/4 | 1.2 3 | 0.7 2 | 0.8 1/2 | 12.3 |
| PSOE | 25 Apr | ? | ? | 39.8 | 31.0 | – | – | – | – | – | – | – | – | – | 8.8 |
| CIS | 9–17 Apr | 2,484 | ? | 40.6 175/176 | 29.6 118/119 | 8.6 15 | 5.1 5 | 3.8 15 | 1.3 7 | 1.2 5 | 1.7 5 | 0.3 ? | 0.3 ? | 0.8 ? | 11.0 |
| Metroscopia/El País | 11–12 Apr | 1,000 | 65 | 38.1 | 23.0 | 11.6 | 5.9 | – | – | – | – | – | – | – | 15.1 |
| Simple Lógica | 1–11 Apr | 1,026 | ? | 42.0 | 24.9 | 10.5 | 6.5 | 3.8 | – | 1.1 | – | – | – | – | 17.1 |
| Celeste-Tel | 2–9 Apr | 1,100 | 65.6 | 41.3 168/171 | 28.9 118/121 | 10.2 18/20 | 5.3 5/7 | 3.9 15 | 1.4 6 | 1.5 7 | 1.2 3/4 | 1.0 3 | 0.7 2 | 0.6 1 | 12.4 |
| Celeste-Tel | 1–7 Mar | 1,100 | 67.2 | 45.1 186/188 | 26.1 102/104 | 9.5 14/15 | 5.7 5/8 | 4.1 16 | 1.3 6 | 1.4 7 | 1.2 3/4 | 1.0 3 | 0.6 2 | 0.6 1 | 19.0 |
| Metroscopia/El País | 29 Feb–1 Mar | 1,007 | 71.7 | 46.3 | 24.4 | 9.1 | 5.1 | – | – | – | – | – | – | – | 21.9 |
| GESOP/El Periódico | 23–28 Feb | 1,000 | ? | 42.0 179/181 | 28.2 110/112 | 7.7 13/14 | 6.4 9/10 | 3.6 14/15 | 1.8 7 | 1.2 5 | 1.2 3/4 | – | – | – | 13.8 |
| NC Report/La Razón | 1–17 Feb | 4,800 | 63.8 | 45.6 186/187 | 25.6 104/108 | 8.8 12/13 | 5.5 6/7 | 4.1 15/16 | 1.5 7 | 1.4 5 | 1.1 3 | 0.8 2 | 0.6 2/3 | 0.6 1/2 | 20.0 |
| Metroscopia/El País | 8–9 Feb | 1,003 | 71.7 | 46.2 | 23.0 | 8.8 | 6.3 | – | – | – | – | – | – | – | 23.2 |
| Celeste-Tel | 1–7 Feb | 1,100 | 67.8 | 44.6 184/185 | 27.4 105/107 | 9.1 14/15 | 5.4 5/7 | 4.1 15 | 1.4 6/7 | 1.4 6 | 1.2 3/4 | 1.0 3 | 0.6 2 | 0.7 1/2 | 17.2 |
| NC Report/La Razón | 16–20 Jan | 1,000 | 68.2 | 46.3 191/193 | 27.8 103/105 | 7.4 11/12 | 5.1 5 | 4.2 15/16 | 1.3 7 | 1.4 5 | 1.1 3 | 0.8 2 | 0.6 2 | 0.5 1 | 18.5 |
| CIS | 4–15 Jan | 2,480 | ? | 42.7 | 28.0 | 7.9 | 5.7 | 3.4 | 1.1 | 1.4 | 1.4 | 0.5 | 0.4 | 0.8 | 14.7 |
| Celeste-Tel | 2–6 Jan | 1,100 | 69.1 | 46.1 189/190 | 28.8 107/108 | 7.6 12 | 5.2 5 | 4.0 15 | 1.3 6 | 1.4 6 | 1.1 3 | 0.8 2 | 0.6 2 | 0.5 1/2 | 17.3 |
| Metroscopia/El País | 4–5 Jan | 1,000 | 71.7 | 46.4 | 26.5 | 7.7 | 4.6 | – | – | – | – | – | – | – | 19.9 |

##### 2011

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | | | | | | PNV | | BNG | | | Lead |
| Metroscopia/El País | 14–15 Dec | 1,000 | 71.7 | 44.9 | 28.4 | 7.0 | 4.7 | – | – | – | – | – | – | – | 16.5 |
| 2011 general election | 20 Nov | — | 68.9 | 44.6 186 | 28.8 110 | 6.9 11 | 4.7 5 | 4.2 16 | 1.4 7 | 1.3 5 | 1.1 3 | 0.8 2 | 0.6 2 | 0.5 1 | 15.8 |

#### 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 | | BNG | | | | | | ? | N | Lead |
| 2015 general election | 20 Dec 2015 | — | 20.8 | 16.0 | 2.7 | 0.4 | – | 0.6 | 0.9 | 1.7 | 0.2 | 0.2 | | 10.1 | 15.0 | 1.6 | — | 26.8 | 4.8 |
| GESOP/El Periòdic | 17–19 Dec 2015 | 950 | 17.7 | 13.3 | 4.0 | 0.3 | – | – | – | 3.2 | – | – | | 9.2 | 16.0 | – | – | – | 1.7 |
| GESOP/El Periòdic | 16–18 Dec 2015 | 800 | 18.8 | 14.6 | – | – | – | – | – | – | – | – | | – | 15.1 | – | – | – | 3.7 |
| GESOP/El Periòdic | 15–17 Dec 2015 | 750 | 17.2 | 15.5 | – | – | – | – | – | – | – | – | | – | 15.5 | – | – | – | 1.7 |
| GESOP/El Periòdic | 14–16 Dec 2015 | 700 | 17.9 | 16.1 | – | – | – | – | – | – | – | – | | 9.3 | 14.9 | – | – | – | 1.8 |
| GESOP/El Periòdic | 13–15 Dec 2015 | 650 | 16.5 | 15.1 | – | – | – | – | – | – | – | – | | 9.5 | 13.4 | – | – | – | 1.4 |
| GESOP/El Periòdic | 12–14 Dec 2015 | 700 | 17.3 | 15.0 | – | – | – | – | – | – | – | – | | 9.8 | 15.3 | – | – | – | 2.0 |
| Demoscopia Servicios/esRadio | 7–11 Dec 2015 | 1,500 | 19.3 | 13.6 | 1.7 | – | – | – | – | – | – | – | | 13.5 | 13.4 | – | 20.3 | 10.5 | 5.7 |
| Simple Lógica | 1–11 Dec 2015 | 1,005 | 13.6 | 9.1 | 3.5 | 0.3 | – | – | 0.3 | – | – | – | | 10.7 | 10.0 | 0.7 | 36.6 | 10.3 | 2.9 |
| GAD3/ABC | 16 Nov–11 Dec 2015 | 7,300 | 22.7 | 18.5 | 4.1 | 0.3 | – | 0.7 | 1.0 | 2.2 | 0.2 | 0.3 | | 16.0 | 12.9 | 2.2 | – | – | 4.2 |
| Metroscopia/El País | 7–10 Dec 2015 | 2,800 | 17.0 | 12.8 | 3.2 | – | – | – | – | – | – | – | | 11.8 | 13.6 | – | 35.2 | 35.2 | 3.4 |
| MyWord/Cadena SER | 3–9 Dec 2015 | 1,500 | 11.8 | 8.9 | 4.3 | 0.8 | – | 0.3 | 0.6 | 3.3 | 0.3 | 0.1 | | 12.3 | 14.0 | 1.0 | 32.4 | 4.6 | 1.7 |
| DYM/El Confidencial | 27 Nov–9 Dec 2015 | 1,012 | 11.8 | 9.6 | – | – | – | – | – | – | – | – | | 12.0 | 12.3 | – | – | – | 0.3 |
| Sondaxe/La Voz de Galicia | 30 Nov–4 Dec 2015 | 1,000 | 17.8 | 16.3 | – | – | – | – | – | – | – | – | | 12.0 | – | – | 24.6 | – | 1.5 |
| GAD3/ABC | 10 Nov–3 Dec 2015 | 5,700 | 22.6 | 18.5 | 4.1 | 0.2 | – | 0.6 | 1.1 | 2.3 | 0.2 | 0.3 | | 16.1 | 13.3 | 2.2 | – | – | 4.1 |
| GESOP/El Periódico | 23–28 Nov 2015 | 1,816 | 18.1 | 17.0 | 4.0 | 0.8 | – | 0.3 | 0.5 | 2.1 | 0.1 | 0.2 | | 16.0 | 13.3 | 1.3 | 20.6 | 3.0 | 1.1 |
| Demoscopia Servicios/esRadio | 23–26 Nov 2015 | 1,500 | 16.5 | 13.9 | 3.0 | – | – | – | – | – | – | – | | 12.5 | 10.4 | – | 23.3 | 13.4 | 2.6 |
| GAD3/ABC | 2–26 Nov 2015 | 4,300 | 23.0 | 18.6 | 4.1 | 0.3 | – | 0.7 | 1.0 | 2.4 | 0.2 | 0.3 | | 15.7 | 12.6 | 2.1 | – | – | 4.4 |
| Metroscopia/El País | 23–25 Nov 2015 | 1,200 | 14.6 | 14.4 | 3.7 | – | – | – | – | – | – | – | | 16.2 | 11.3 | – | 32.0 | 32.0 | 1.6 |
| Simple Lógica | 2–16 Nov 2015 | 1,746 | 14.8 | 13.2 | 2.9 | 0.4 | – | – | 0.3 | – | – | – | | 14.1 | 12.6 | 0.9 | 24.0 | 12.0 | 0.7 |
| CIS | 27 Oct–16 Nov 2015 | 17,452 | 16.2 | 14.9 | 2.6 | 0.2 | – | 0.7 | 0.7 | 1.7 | 0.1 | 0.1 | | 11.6 | 11.8 | 1.2 | 25.2 | 8.0 | 1.3 |
| IBES/Última Hora | 8 Nov 2015 | 2,508 | 21.9 | 18.2 | 4.2 | 0.1 | – | 0.6 | 0.9 | 3.3 | 0.2 | 0.1 | | 15.4 | 13.4 | 2.2 | 9.5 | 6.6 | 3.7 |
| Demoscopia Servicios/esRadio | 29 Oct–6 Nov 2015 | 1,800 | 17.1 | 14.6 | 3.7 | – | – | – | – | – | – | – | – | 11.0 | 8.3 | – | 24.2 | 13.7 | 2.5 |
| Metroscopia/El País | 26–28 Oct 2015 | 1,400 | 15.4 | 12.1 | 4.3 | – | – | – | – | – | – | – | – | 13.9 | 10.9 | – | 35.4 | 35.4 | 1.5 |
| MyWord/Cadena SER | 22–26 Oct 2015 | 1,001 | 12.0 | 9.9 | 3.2 | 0.8 | – | 0.3 | 0.6 | 3.7 | 0.4 | 0.1 | 1.2 | 14.6 | 15.5 | 1.2 | 26.4 | 4.3 | 0.9 |
| DYM/El Confidencial | 15–26 Oct 2015 | 1,002 | 11.7 | 10.0 | – | – | – | – | – | – | – | – | – | 10.7 | 8.8 | – | – | – | 1.0 |
| CIS | 1–12 Oct 2015 | 2,493 | 15.0 | 16.6 | 3.1 | 0.4 | – | 0.7 | 0.5 | 1.9 | 0.2 | 0.3 | 0.8 | 11.0 | 8.8 | 1.2 | 24.9 | 9.7 | 1.6 |
| Simple Lógica | 1–9 Oct 2015 | 1,047 | 14.2 | 11.8 | 4.0 | 0.3 | – | – | 0.1 | – | – | – | – | 13.3 | 7.1 | 0.5 | 25.4 | 18.0 | 0.9 |
| Metroscopia/El País | 7–8 Oct 2015 | 1,200 | 15.1 | 13.6 | 3.4 | – | – | – | – | – | – | – | – | 13.7 | 8.3 | – | 37.9 | 37.9 | 1.4 |
| Demoscopia Servicios/esRadio | 29 Sep–2 Oct 2015 | 1,000 | 18.3 | 15.2 | 3.1 | – | – | – | – | – | – | – | – | 7.3 | 9.6 | – | 23.7 | 15.9 | 3.1 |
| Metroscopia/El País | 7–11 Sep 2015 | 1,800 | 15.4 | 16.8 | 3.2 | – | – | – | – | – | – | – | – | 11.2 | 12.7 | – | 31.2 | 31.2 | 1.4 |
| Demoscopia Servicios/esRadio | 3–11 Sep 2015 | 1,800 | 20.8 | 13.7 | 2.8 | – | – | – | – | – | – | – | – | 7.3 | 11.9 | – | 22.6 | 14.1 | 7.1 |
| MyWord/Cadena SER | 20–27 Aug 2015 | 1,001 | 13.8 | 12.2 | 3.2 | 1.2 | – | 0.3 | 0.7 | 3.2 | 0.2 | 0.4 | 1.5 | 11.0 | 14.9 | 1.8 | 22.4 | 5.5 | 1.1 |
| Simple Lógica | 3–11 Aug 2015 | 1,022 | 15.2 | 13.3 | 4.4 | 0.6 | 0.3 | – | 0.6 | – | – | – | – | 9.4 | 11.9 | – | 21.9 | 18.0 | 1.9 |
| Metroscopia/El País | 20–22 Jul 2015 | 1,000 | 15.0 | 16.0 | 3.5 | – | – | – | – | – | – | – | – | 10.4 | 11.1 | – | 34.2 | 34.2 | 1.0 |
| CIS | 1–9 Jul 2015 | 2,486 | 16.0 | 17.3 | 2.9 | 0.4 | 1.9 | 0.6 | 1.0 | 1.6 | 0.3 | 0.2 | 0.7 | 7.7 | 12.6 | – | 20.3 | 11.1 | 1.3 |
| Simple Lógica | 1–9 Jul 2015 | 1,040 | 13.6 | 16.0 | 4.3 | 0.3 | 0.7 | – | 0.5 | – | – | – | – | 10.5 | 10.6 | – | 16.0 | 20.1 | 2.4 |
| Metroscopia/El País | 1–2 Jul 2015 | 1,000 | 15.5 | 14.0 | 2.5 | 0.5 | – | – | – | – | – | – | – | 10.7 | 14.9 | – | 31.4 | 31.4 | 0.6 |
| Metroscopia/El País | 28 May–2 Jun 2015 | 2,000 | 16.0 | 14.4 | 2.2 | 0.2 | 1.6 | 0.2 | 0.6 | 1.8 | 0.1 | – | 0.4 | 6.1 | 14.2 | – | 32.7 | 5.8 | 1.6 |
| MyWord/Cadena SER | 17–22 Apr 2015 | 1,000 | 11.1 | 8.4 | 3.4 | 1.5 | 0.9 | 0.5 | 0.4 | 3.3 | 0.2 | 0.4 | 0.9 | 17.8 | 17.7 | – | 19.4 | 5.9 | 0.1 |
| GESOP/El Periódico | 8–13 Apr 2015 | 1,000 | 14.0 | 14.5 | 3.9 | 1.1 | 2.3 | 0.3 | 0.4 | 1.2 | 0.2 | 0.1 | 0.5 | 15.7 | 18.9 | – | 12.8 | 5.1 | 3.2 |
| Simple Lógica | 1–13 Apr 2015 | 1,059 | 10.4 | 12.7 | 2.4 | 0.6 | 0.9 | – | 0.1 | – | – | – | – | 11.7 | 12.7 | – | 23.3 | 21.6 | Tie |
| CIS | 1–12 Apr 2015 | 2,479 | 13.5 | 15.4 | 3.1 | 0.8 | 1.4 | 0.4 | 0.6 | 1.5 | 0.2 | 0.2 | 0.4 | 10.0 | 13.6 | – | 22.6 | 10.9 | 1.9 |
| Metroscopia/El País | 7–9 Apr 2015 | 1,000 | 14.6 | 15.1 | 3.5 | 1.3 | 1.4 | 0.2 | 0.6 | 1.6 | 0.1 | 0.2 | 0.2 | 12.5 | 15.3 | – | 25.5 | 4.6 | 0.2 |
| Intercampo/GETS | 13–29 Mar 2015 | 2,024 | 13.0 | 18.1 | 3.3 | 0.9 | 1.4 | – | 0.5 | 1.1 | – | – | – | 7.8 | 16.3 | – | 35.0 | 35.0 | 1.8 |
| Simple Lógica | 2–13 Mar 2015 | 1,058 | 11.1 | 10.2 | 3.7 | 1.7 | 0.9 | – | 0.7 | – | – | – | – | 11.3 | 13.6 | – | 23.4 | 18.9 | 2.3 |
| MyWord/Cadena SER | 4–9 Mar 2015 | 1,000 | 7.2 | 7.7 | 3.5 | 1.7 | 1.7 | 0.2 | 0.4 | 3.1 | 0.3 | 0.1 | 0.7 | 15.0 | 22.7 | – | 19.9 | 7.1 | 7.7 |
| Metroscopia/El País | 3–4 Mar 2015 | 1,000 | 12.8 | 11.6 | 4.4 | 1.9 | 1.0 | 0.5 | 0.4 | 1.5 | 0.2 | – | – | 11.0 | 17.0 | – | 26.5 | 5.0 | 4.2 |
| MyWord/Cadena SER | 9–11 Feb 2015 | 1,000 | 12.2 | 9.1 | 3.6 | 3.4 | 2.4 | 0.4 | 0.9 | 2.6 | 0.5 | 0.3 | 1.0 | 10.5 | 23.5 | – | 16.1 | 4.5 | 11.3 |
| Simple Lógica | 2–9 Feb 2015 | 1,058 | 13.9 | 10.1 | 3.0 | 2.6 | 1.0 | – | 0.6 | – | – | – | – | 5.3 | 20.0 | – | 18.5 | 20.2 | 6.1 |
| Metroscopia/El País | 3–4 Feb 2015 | 1,000 | 12.3 | 11.4 | 4.0 | 2.1 | 0.9 | 0.2 | 0.8 | 1.0 | 0.1 | 0.1 | 0.2 | 6.6 | 20.5 | – | 27.4 | 6.0 | 8.2 |
| GAD3/ABC | 9–16 Jan 2015 | 1,000 | 19.5 | 12.6 | 2.4 | 3.2 | 1.8 | 0.3 | 1.2 | 1.1 | – | – | 0.9 | 5.2 | 13.7 | – | – | – | 5.8 |
| Simple Lógica | 7–14 Jan 2015 | 1,025 | 11.5 | 9.5 | 3.4 | 3.7 | 1.2 | – | 0.2 | – | – | – | – | 3.5 | 20.7 | – | 19.1 | 22.7 | 9.2 |
| CIS | 2–12 Jan 2015 | 2,481 | 12.9 | 12.4 | 3.6 | 2.2 | 1.7 | 0.6 | 0.6 | 1.3 | 0.2 | 0.2 | 0.3 | 2.1 | 19.3 | – | 22.0 | 13.6 | 6.4 |
| Metroscopia/El País | 7–8 Jan 2015 | 1,000 | 12.8 | 12.3 | 4.4 | 3.3 | 1.5 | 0.3 | 0.2 | 1.8 | 0.2 | 0.2 | 0.4 | 4.6 | 20.4 | – | 25.6 | 7.9 | 7.6 |
| MyWord/Cadena SER | 30 Dec–6 Jan 2015 | 1,001 | 9.8 | 10.1 | 4.0 | 4.5 | 1.7 | 0.4 | 0.2 | 3.5 | 0.8 | 0.4 | – | 4.9 | 24.0 | – | 18.4 | 7.8 | 14.1 |
| GESOP/El Periódico | 9–15 Dec 2014 | 1,000 | 15.9 | 13.6 | 3.6 | 4.5 | 0.8 | 0.2 | 0.8 | 2.3 | 0.4 | 0.1 | 0.2 | 3.2 | 24.4 | – | 13.6 | 6.5 | 8.5 |
| DYM/El Confidencial | 13 Dec 2014 | ? | 7.8 | 7.2 | – | – | – | – | – | – | – | – | – | 2.9 | 16.9 | – | 28.4 | 14.4 | 9.1 |
| Metroscopia/El País | 2–3 Dec 2014 | 1,000 | 12.1 | 16.5 | 4.1 | 3.5 | – | – | – | – | – | – | – | – | 18.1 | – | 31.6 | 31.6 | 1.6 |
| DYM/El Confidencial | 28 Oct–6 Nov 2014 | 985 | 7.4 | 8.9 | – | – | – | – | – | – | – | – | – | – | 16.6 | – | – | – | 7.7 |
| Metroscopia/El País | 28–29 Oct 2014 | 1,000 | 10.4 | 13.1 | 3.7 | 3.0 | – | – | – | – | – | – | – | – | 22.2 | – | 36.7 | 36.7 | 9.1 |
| CIS | 1–13 Oct 2014 | 2,480 | 11.7 | 14.3 | 3.7 | 2.1 | 2.0 | 0.4 | 0.4 | 1.9 | 0.1 | 0.1 | 0.3 | 1.5 | 17.6 | – | 21.9 | 15.7 | 3.3 |
| Intercampo/GETS | 15 Sep–12 Oct 2014 | 1,724 | 12.8 | 18.8 | 5.3 | 1.5 | 0.8 | – | 0.8 | 2.0 | – | – | – | – | 14.8 | – | 40.0 | 40.0 | 4.0 |
| Metroscopia/El País | 29–30 Sep 2014 | 1,000 | 11.9 | 14.8 | 4.9 | 3.2 | – | – | – | – | – | – | – | – | 12.3 | – | 40.0 | 40.0 | 2.5 |
| Metroscopia/El País | 16–24 Jul 2014 | 1,200 | 14.5 | 14.4 | 3.0 | 2.0 | – | – | – | – | – | – | – | – | 13.4 | – | 42.3 | 42.3 | 0.1 |
| CIS | 1–9 Jul 2014 | 2,471 | 12.8 | 10.6 | 6.2 | 3.5 | 1.5 | 0.6 | 0.6 | 2.5 | 0.2 | 0.0 | 0.8 | 0.6 | 11.9 | – | 20.8 | 19.2 | 0.9 |
| GESOP/El Periódico | 27–31 May 2014 | 1,000 | 15.1 | 8.3 | 6.1 | 4.8 | 2.3 | 0.5 | 0.4 | 3.5 | – | 0.1 | 0.6 | 2.6 | 16.7 | – | 18.9 | 9.3 | 1.6 |
| 2014 EP election | 25 May 2014 | — | 11.7 | 10.4 | 4.5 | 2.9 | 1.6 | 0.6 | 0.6 | 1.8 | 0.2 | 0.2 | 0.4 | 1.4 | 3.6 | – | — | 54.2 | 1.3 |
| CIS | 1–7 Apr 2014 | 2,469 | 13.6 | 13.4 | 7.2 | 4.9 | 1.4 | 0.8 | 0.6 | 1.9 | 0.2 | 0.2 | 0.9 | – | – | – | 22.9 | 20.2 | 0.2 |
| Metroscopia/El País | 25 Mar–1 Apr 2014 | 1,200 | 13.6 | 13.0 | 9.5 | 5.5 | 1.2 | 0.3 | 0.4 | 2.3 | – | 0.2 | 0.1 | – | – | – | 28.4 | 14.5 | 0.6 |
| Simple Lógica | 3–7 Mar 2014 | 1,068 | 11.5 | 11.1 | 8.1 | 6.6 | 1.4 | – | 0.6 | – | – | – | – | – | – | – | 18.6 | 32.2 | 0.4 |
| Metroscopia/El País | 25 Feb–4 Mar 2014 | 1,200 | 14.1 | 13.7 | 10.9 | 6.9 | 1.8 | 0.2 | 0.8 | 2.4 | 0.3 | 0.4 | 0.3 | – | – | – | 22.2 | 14.7 | 0.4 |
| MyWord/Cadena SER | 13–19 Feb 2014 | 1,000 | 7.0 | 9.1 | 8.3 | 10.9 | 2.5 | 0.4 | 0.3 | 3.6 | 0.9 | 0.9 | 2.7 | – | – | – | 21.7 | 9.6 | 1.8 |
| Metroscopia/El País | 5–6 Feb 2014 | 1,200 | 12.6 | 12.4 | 11.9 | 5.5 | 1.6 | 0.2 | 0.8 | 1.7 | 0.2 | 0.6 | 0.4 | – | – | – | 24.1 | 16.8 | 0.2 |
| GESOP/El Periódico | 20–23 Jan 2014 | 1,000 | 15.7 | 14.6 | 9.5 | 8.0 | 2.2 | 0.8 | 0.5 | 1.6 | 0.4 | 0.2 | 0.3 | 2.3 | – | – | 16.8 | 14.7 | 1.1 |
| CIS | 3–15 Jan 2014 | 2,480 | 10.8 | 11.8 | 7.1 | 4.6 | 1.4 | 0.5 | 0.6 | 1.7 | 0.3 | 0.4 | 0.6 | – | – | – | 23.6 | 24.2 | 1.0 |
| Metroscopia/El País | 8–9 Jan 2014 | 1,200 | 12.5 | 12.9 | 9.9 | 4.1 | 1.3 | 0.4 | 0.6 | 1.4 | 0.1 | 0.2 | 0.6 | – | – | – | 23.9 | 19.4 | 0.4 |
| GESOP/El Periódico | 25–28 Nov 2013 | 1,000 | 16.1 | 17.3 | 9.3 | 7.2 | 1.5 | 0.7 | 0.5 | 2.7 | 0.3 | 0.4 | 0.2 | 2.7 | – | – | 15.6 | 11.4 | 1.2 |
| GAD3/Antena 3 | 11–14 Nov 2013 | 801 | 22.9 | 22.1 | 7.1 | 7.9 | 2.5 | – | – | – | – | – | – | – | – | – | – | – | 0.8 |
| MyWord/Cadena SER | 30 Oct–4 Nov 2013 | 1,000 | 7.1 | 9.1 | 11.0 | 10.8 | 1.5 | 0.8 | 0.4 | 3.8 | 0.7 | 0.2 | 2.4 | – | – | – | 21.6 | 11.5 | 0.2 |
| DYM/El Confidencial | 22–31 Oct 2013 | 967 | 7.5 | 8.7 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.2 |
| GAD3/Antena 3 | 7–10 Oct 2013 | 805 | 19.6 | 17.0 | 12.6 | 8.5 | 1.9 | – | – | – | – | – | – | – | – | – | – | – | 2.6 |
| CIS | 1–9 Oct 2013 | 2,485 | 11.4 | 13.0 | 8.5 | 4.8 | 1.1 | 0.6 | 0.5 | 2.0 | 0.2 | 0.4 | 0.4 | – | – | – | 24.1 | 22.0 | 1.6 |
| Simple Lógica | 1–7 Oct 2013 | 1,001 | 10.1 | 9.1 | 6.1 | 7.0 | 1.2 | – | 0.5 | – | – | – | – | – | – | – | 19.5 | 37.2 | 1.0 |
| Metroscopia/El País | 2–3 Oct 2013 | 1,000 | 14.1 | 9.6 | 9.5 | 7.4 | 1.2 | 0.2 | 1.1 | 1.5 | 0.2 | 0.2 | 0.5 | – | – | – | 26.3 | 13.6 | 4.5 |
| GAD3/Antena 3 | 10–13 Sep 2013 | 935 | 18.3 | 16.0 | 7.5 | 6.1 | 1.7 | – | – | – | – | – | – | – | – | – | – | – | 2.3 |
| Metroscopia/El País | 4–5 Sep 2013 | 700 | 11.1 | 12.3 | 10.4 | 7.3 | 1.7 | 0.7 | 0.4 | 1.9 | 0.3 | 0.3 | 0.6 | – | – | – | 24.2 | 16.4 | 1.2 |
| MyWord/Cadena SER | 26–30 Aug 2013 | 1,000 | 8.6 | 8.3 | 11.6 | 8.5 | – | – | – | – | – | – | – | – | – | – | 25.7 | 11.0 | 3.0 |
| Metroscopia/El País | 24–25 Jul 2013 | 1,000 | 11.6 | 10.3 | 9.8 | 6.3 | – | – | – | – | – | – | – | – | – | – | 16.5 | 29.2 | 1.3 |
| CIS | 1–10 Jul 2013 | 2,476 | 13.2 | 12.5 | 7.8 | 4.9 | 1.1 | 0.5 | 0.8 | 1.6 | 0.3 | 0.2 | 0.8 | – | – | – | 21.9 | 24.0 | 0.7 |
| Metroscopia/El País | 3–4 Jul 2013 | 1,000 | 10.0 | 10.4 | 9.5 | 6.7 | 1.7 | 0.5 | 0.4 | 1.6 | 0.4 | – | 0.6 | – | – | – | 18.8 | 26.0 | 0.4 |
| GESOP/El Periódico | 25–28 Jun 2013 | 1,000 | 15.5 | 17.2 | 11.5 | 8.2 | 1.4 | 0.6 | 0.6 | 1.6 | 0.3 | 0.1 | 0.4 | 0.7 | – | – | 15.6 | 13.2 | 1.7 |
| MyWord/Cadena SER | 14–18 Jun 2013 | 1,000 | 7.5 | 7.5 | 13.2 | 10.7 | – | – | – | – | – | – | – | – | – | – | 22.8 | 12.6 | 2.5 |
| Metroscopia/El País | 5–6 Jun 2013 | 1,000 | 13.7 | 10.2 | 10.0 | 8.0 | 1.4 | 0.6 | 0.5 | 1.3 | 0.2 | – | 0.4 | – | – | – | 17.6 | 25.8 | 3.5 |
| GAD3/Antena 3 | 27–30 May 2013 | 1,000 | 18.7 | 13.1 | 10.6 | 6.3 | 1.2 | – | – | – | – | – | – | – | – | – | – | – | 5.6 |
| Metroscopia/El País | 8–9 May 2013 | 1,000 | 11.3 | 7.8 | 9.5 | 5.8 | 1.3 | 0.5 | 0.3 | 1.3 | 0.7 | 0.1 | 0.2 | – | – | – | 22.8 | 25.0 | 1.8 |
| MyWord/Cadena SER | 2–8 May 2013 | 1,000 | 7.8 | 11.7 | 11.1 | 9.7 | – | – | – | – | – | – | – | – | – | – | 17.3 | 13.3 | 0.6 |
| CIS | 1–8 Apr 2013 | 2,482 | 12.5 | 13.7 | 7.1 | 4.1 | 1.2 | 0.3 | 0.8 | 1.6 | 0.2 | 0.2 | 0.6 | – | – | – | 21.5 | 22.7 | 1.2 |
| Metroscopia/El País | 3–4 Apr 2013 | 1,000 | 13.4 | 8.8 | 10.7 | 6.7 | 1.2 | 0.3 | 0.8 | 1.1 | 0.3 | 0.2 | 0.3 | – | – | – | 18.0 | 27.3 | 2.7 |
| Simple Lógica | 4–8 Mar 2013 | 1,017 | 10.0 | 8.3 | 6.6 | 4.8 | 0.4 | – | 0.1 | – | – | – | – | – | – | – | 22.4 | 40.2 | 1.7 |
| Metroscopia/El País | 27–28 Feb 2013 | 1,000 | 13.6 | 10.5 | 8.6 | 5.7 | – | – | – | – | – | – | – | – | – | – | 16.8 | 25.5 | 3.1 |
| Metroscopia/El País | 30 Jan–1 Feb 2013 | 2,000 | 12.0 | 12.4 | 7.8 | 6.9 | – | – | – | – | – | – | – | – | – | – | 19.5 | 24.6 | 0.4 |
| GESOP/El Periódico | 25–29 Jan 2013 | 1,000 | 13.6 | 20.8 | 10.1 | 7.1 | 1.8 | 0.5 | 0.7 | 2.1 | 0.5 | 0.1 | 0.6 | – | – | – | 13.8 | 12.4 | 7.2 |
| CIS | 4–14 Jan 2013 | 2,483 | 15.8 | 17.0 | 6.4 | 3.8 | 1.7 | 0.4 | 0.8 | 1.9 | 0.3 | 0.2 | 0.8 | – | – | – | 19.7 | 21.5 | 1.2 |
| Metroscopia/El País | 9–10 Jan 2013 | 1,000 | 13.9 | 11.3 | 9.8 | 5.9 | – | – | – | – | – | – | – | – | – | – | 17.0 | 24.7 | 2.6 |
| Metroscopia/El País | 6–7 Nov 2012 | 1,000 | 16.7 | 13.3 | 8.1 | 5.0 | – | – | – | – | – | – | – | – | – | – | 15.6 | 24.8 | 3.4 |
| MyWord/Cadena SER | 26–31 Oct 2012 | 1,000 | 12.2 | 10.7 | 8.4 | 9.2 | – | – | – | – | – | – | – | – | – | – | 22.3 | 10.2 | 1.5 |
| CIS | 2–14 Oct 2012 | 2,484 | 16.1 | 17.6 | 7.0 | 4.4 | 2.3 | 0.8 | 0.8 | 1.1 | 0.2 | 0.3 | 0.5 | – | – | – | 20.1 | 18.8 | 1.5 |
| Simple Lógica | 3–13 Sep 2012 | 1,776 | 14.6 | 11.1 | 5.3 | 4.0 | 0.8 | – | 0.6 | – | – | – | – | – | – | – | 21.9 | 33.5 | 3.5 |
| CIS | 2–10 Jul 2012 | 2,484 | 18.2 | 17.1 | 6.2 | 3.5 | 2.1 | 0.9 | 0.6 | 0.8 | 0.2 | 0.3 | 0.8 | – | – | – | 18.7 | 22.3 | 1.1 |
| DYM/ABC | 27–28 Jun 2012 | 857 | 17.4 | 10.9 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 6.5 |
| GESOP/El Periódico | 14–18 Jun 2012 | 1,000 | 24.8 | 22.3 | 9.5 | 6.8 | 3.2 | 0.8 | 1.0 | 0.8 | 0.8 | 0.2 | 0.3 | – | – | – | 11.9 | 7.4 | 2.5 |
| Simple Lógica | 1–11 May 2012 | 1,015 | 17.8 | 15.8 | 8.1 | 3.7 | 1.4 | – | 0.6 | – | – | – | – | – | – | – | 17.2 | 26.1 | 2.0 |
| CIS | 9–17 Apr 2012 | 2,484 | 24.0 | 20.8 | 7.0 | 2.8 | 1.9 | 0.7 | 1.0 | 1.0 | 0.1 | 0.2 | 0.4 | – | – | – | 15.6 | 17.2 | 3.2 |
| GESOP/El Periódico | 23–28 Feb 2012 | 1,000 | 33.0 | 24.0 | 7.1 | 5.0 | 2.5 | 1.2 | 0.6 | 0.9 | 0.4 | 0.1 | 0.3 | – | – | – | 10.1 | 6.4 | 9.0 |
| Metroscopia/El País | 8–9 Feb 2012 | 1,003 | 32.5 | 14.4 | 7.4 | 5.5 | – | – | – | – | – | – | – | – | – | – | 15.9 | 13.3 | 18.1 |
| CIS | 4–15 Jan 2012 | 2,480 | 30.5 | 18.2 | 5.9 | 3.8 | 2.2 | 0.7 | 0.9 | 0.7 | 0.2 | 0.2 | 0.8 | – | – | – | 16.6 | 13.4 | 12.3 |
| 2011 general election | 20 Nov 2011 | — | 31.6 | 20.3 | 4.9 | 3.3 | 3.0 | 1.0 | 0.9 | 0.7 | 0.5 | 0.4 | 0.4 | – | – | – | — | 28.3 | 11.3 |

#### Victory preference

The table below lists opinion polling on the victory preferences for each party in the event of a general election taking place.
| Polling firm/Commissioner | Fieldwork date | Sample size | | | | | | | PNV | | | | | Other/ None | ? | Lead |
| Metroscopia/El País | 7–10 Dec 2015 | 2,800 | 20.0 | 19.0 | – | – | – | – | – | – | 16.0 | 17.0 | – | – | – | 8.8 |
| CIS | 27 Oct–16 Nov 2015 | 17,452 | 18.0 | 18.9 | 3.5 | 0.3 | – | 0.3 | 0.4 | 1.2 | 13.6 | 13.1 | 0.9 | 10.6 | 19.2 | 0.9 |
| Metroscopia/El País | 26–28 Oct 2015 | 1,400 | 18.0 | 18.0 | – | – | – | – | – | – | 18.0 | 14.0 | – | 18.0 | 14.0 | Tie |
| CIS | 1–9 Jul 2015 | 2,486 | 18.9 | 22.2 | 3.2 | 0.3 | 1.3 | 0.2 | 0.4 | 1.0 | 8.3 | 15.7 | – | 3.6 | 24.8 | 3.3 |
| Intercampo/GETS | 15 Sep–12 Oct 2014 | 1,724 | 13.9 | 25.3 | 5.2 | 1.7 | 0.3 | – | 0.3 | 0.6 | 0.9 | 16.5 | – | 14.3 | 21.0 | 8.8 |
| Intercampo/GETS | 16 Sep–14 Oct 2013 | 1,726 | 14.4 | 25.6 | 8.6 | 3.7 | 1.1 | – | 0.4 | 0.9 | – | – | – | 20.3 | 25.0 | 11.2 |
| Intercampo/GETS | 15 Sep–17 Oct 2012 | 1,724 | 16.6 | 27.1 | 7.6 | 4.2 | 0.7 | – | 0.6 | 0.3 | – | – | – | 19.4 | 23.5 | 10.5 |

#### 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 |
| GAD3/ABC | 16 Nov–11 Dec 2015 | 7,300 | 59.4 | 12.3 | 10.8 | 4.1 | 13.4 | 13.4 | 47.1 |
| GAD3/ABC | 10 Nov–3 Dec 2015 | 5,700 | 58.1 | 13.0 | 11.4 | 4.1 | 13.4 | 13.4 | 45.1 |
| GESOP/El Periódico | 23–28 Nov 2015 | 1,816 | 61.7 | 11.0 | 7.3 | 1.7 | 0.2 | 18.1 | 50.7 |
| GAD3/ABC | 2–26 Nov 2015 | 4,300 | 56.3 | 15.0 | 9.9 | 4.9 | 13.9 | 13.9 | 41.3 |
| GAD3/ABC | 26 Oct–19 Nov 2015 | 3,000 | 54.9 | 16.2 | 10.0 | 5.0 | 13.9 | 13.9 | 38.7 |
| CIS | 27 Oct–16 Nov 2015 | 17,452 | 52.4 | 13.5 | 4.9 | 2.0 | 2.4 | 24.8 | 38.9 |
| GAD3/ABC | 19 Oct–12 Nov 2015 | 3,100 | 53.2 | 17.5 | 9.6 | 5.8 | 13.9 | 13.9 | 35.7 |
| GAD3/ABC | 14 Oct–4 Nov 2015 | 3,300 | 51.5 | 18.3 | 9.4 | 6.2 | 14.6 | 14.6 | 33.2 |
| GAD3/ABC | 14–29 Oct 2015 | 2,800 | 49.0 | 18.1 | 9.6 | 5.5 | 17.8 | 17.8 | 30.9 |
| GAD3/ABC | 14 Sep–19 Oct 2015 | 2,600 | 48.2 | 17.7 | 6.8 | 6.0 | 21.3 | 21.3 | 30.5 |
| CIS | 1–9 Jul 2015 | 2,486 | 40.1 | 22.2 | 1.6 | 6.9 | 0.6 | 28.7 | 17.9 |
| GAD3/ABC | 23 Jun–8 Jul 2015 | 1,000 | 43.7 | 26.6 | 4.7 | 15.5 | 9.5 | 9.5 | 17.1 |
| GESOP/El Periódico | 8–13 Apr 2015 | 1,000 | 44.7 | 17.4 | 2.1 | 10.7 | 0.1 | 25.0 | 27.3 |
| Encuestamos | 26 Feb 2015 | 600 | 32.1 | – | – | 33.3 | – | – | 1.2 |
| Encuestamos | 23 Jan 2015 | ? | 26.5 | 9.1 | – | 45.5 | – | – | 19.0 |
| GAD3/ABC | 9–16 Jan 2015 | 1,000 | 32.2 | 10.4 | – | 25.7 | 6.2 | 25.5 | 6.5 |
| GESOP/El Periódico | 9–15 Dec 2014 | 1,000 | 29.8 | 16.7 | 0.5 | 26.9 | 1.3 | 24.8 | 2.9 |
| Intercampo/GETS | 15 Sep–12 Oct 2014 | 1,724 | 39.6 | 20.3 | – | 5.9 | 2.7 | 31.5 | 19.3 |
| GAD3/Antena 3 | 11–14 Nov 2013 | 801 | 48.5 | 20.8 | – | – | 30.7 | 30.7 | 27.7 |
| Intercampo/GETS | 16 Sep–14 Oct 2013 | 1,726 | 30.5 | 23.9 | – | – | 6.8 | 38.8 | 6.6 |
| GAD3/Antena 3 | 7–10 Oct 2013 | 805 | 43.5 | 17.6 | – | – | 20.4 | 18.6 | 25.9 |
| GAD3/Antena 3 | 10–13 Sep 2013 | 935 | 36.0 | 19.4 | – | – | 22.3 | 22.3 | 16.6 |
| GAD3/Antena 3 | 27–30 May 2013 | 1,000 | 39.0 | 16.4 | – | – | 20.4 | 24.2 | 22.6 |
| Intercampo/GETS | 15 Sep–17 Oct 2012 | 1,724 | 29.1 | 23.8 | – | – | 7.7 | 39.4 | 5.3 |

### Sub-national polling
## Preferred coalition

| Polling firm/Commissioner | Fieldwork date | Sample size | PP | PP PSOE | PP PSOE | PP C's | PP C's | PSOE | PSOE Podemos | PSOE Podemos | PSOE C's | PSOE C's | C's Podemos | C's Podemos | Other/ None/ Not care | ? |
| NC Report/La Razón | 9–12 Dec 2015 | 3,000 | – | 8.4 | 8.4 | 35.8 | 35.8 | – | 16.7 | 16.7 | 17.5 | 17.5 | – | – | 4.5 | 17.1 |
| InvyMark/laSexta | 7–11 Dec 2015 | ? | – | 3.1 | 3.1 | 30.0 | 30.0 | – | 32.0 | 32.0 | 11.8 | 11.8 | 5.9 | 5.9 | – | 17.2 |
| InvyMark/laSexta | 30 Nov–4 Dec 2015 | ? | – | 3.3 | 3.3 | 31.9 | 31.9 | – | 35.5 | 35.5 | 8.3 | 8.3 | 3.3 | 3.3 | – | 17.7 |
| GESOP/El Periódico | 23–28 Nov 2015 | 1,816 | – | 5.3 | 5.3 | 28.4 | 28.4 | – | 24.8 | 24.8 | 19.9 | 19.9 | 5.9 | 5.9 | 2.8 | 12.9 |
| InvyMark/laSexta | 23–27 Nov 2015 | 1,200 | – | 5.3 | 5.3 | 29.5 | 29.5 | – | 32.8 | 32.8 | 12.8 | 12.8 | 3.0 | 3.0 | – | 16.6 |
| MyWord/Cadena SER | 22–26 Oct 2015 | 1,001 | 10.5 | 2.2 | 2.2 | 14.4 | 14.4 | 3.7 | 21.1 | 21.1 | 13.9 | 13.9 | – | – | 23.9 | 10.3 |
| InvyMark/laSexta | 19–23 Oct 2015 | ? | – | 7.3 | 7.3 | 29.4 | 29.4 | – | 26.2 | 26.2 | 17.6 | 17.6 | 5.3 | 5.3 | – | 14.2 |
| InvyMark/laSexta | 5–9 Oct 2015 | ? | – | 5.7 | 5.7 | 26.7 | 26.7 | – | 31.7 | 31.7 | 19.0 | 19.0 | 3.4 | 3.4 | – | 13.5 |
| CIS | 1–9 Jul 2015 | 2,486 | 11.6 | 5.0 | 5.0 | 10.3 | 10.3 | 9.1 | 21.1 | 21.1 | 10.9 | 10.9 | – | – | 12.8 | 19.2 |
| InvyMark/laSexta | 25–29 May 2015 | 1,200 | – | 5.8 | 5.8 | 24.6 | 24.6 | – | 38.8 | 38.8 | 10.7 | 10.7 | 6.0 | 6.0 | – | 14.1 |
| InvyMark/laSexta | 13–17 Apr 2015 | ? | – | 9.0 | 9.0 | 21.4 | 21.4 | – | 26.1 | 26.1 | 15.8 | 15.8 | 8.3 | 8.3 | – | 19.4 |
| GESOP/El Periódico | 8–13 Apr 2015 | 1,000 | – | 8.3 | 8.3 | 21.7 | 21.7 | – | 29.7 | 29.7 | 21.0 | 21.0 | – | – | – | 19.3 |