# Opinion polling for the 2019 Spanish local elections (Basque Country)

In the run up to the 2019 Spanish local elections, various organisations carried out opinion polling to gauge voting intention in local entities in Spain. Results of such polls for municipalities and the three foral deputations (General Assemblies) in the Basque Country are displayed in this article. The date range for these opinion polls is from the previous local elections, held on 24 May 2015, to the day the next elections were held, on 26 May 2019.
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 given poll.

## Municipalities
### Barakaldo

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | PNV | | | | | BD | | | | Lead |
| 2019 municipal election | 26 May 2019 | — | 62.5 | 38.6 11 | 27.0 8 | 11.5 3 | | 5.7 1 | – | 1.1 0 | 13.2 4 | 1.5 0 | 11.6 |
| Ikerfel/El Correo | 30 Apr–14 May 2019 | 500 | ? | 31.6 9/10 | 23.8 7/8 | 12.1 3 | | 8.1 2 | – | 0.7 0 | 18.1 5 | 2.0 0 | 7.8 |
| 2015 municipal election | 24 May 2015 | — | 58.7 | 26.9 8 | 26.8 8 | 14.2 4 | 12.0 4 | 9.2 3 | 4.6 0 | 0.8 0 | – | – | 0.1 |

### Bilbao
#### Color key

Poll conducted after legal ban on opinion polls
| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | PNV | | | | UB | | | | | Lead |
| 2019 municipal election | 26 May 2019 | — | 61.8 | 42.7 14 | 14.9 4 | 15.9 5 | 9.2 3 | | 0.5 0 | 2.2 0 | 1.1 0 | 10.5 3 | 26.8 |
| Gizaker/EiTB | 24–26 May 2019 | 600 | ? | 44.2 14/15 | 18.3 6 | 12.3 4 | 7.4 2 | | 3.5 0 | 2.3 0 | – | 9.0 3/4 | 26.5 |
| Sigma Dos/El Mundo | 17 May 2019 | ? | ? | 44.0 15 | 13.6 4 | 17.5 5/6 | 6.8 2 | | – | 3.2 0 | – | 8.6 2/3 | 26.5 |
| Gizaker/EiTB | 9–14 May 2019 | 400 | 69.0 | 42.5 14 | 16.1 5 | 14.3 5 | 8.3 2 | | 2.1 0 | 2.7 0 | 1.6 0 | 11.4 3 | 26.4 |
| Ikerfel/Diario Vasco | 30 Apr–14 May 2019 | ? | ? | 42.1 14 | 13.7 4 | 13.6 4 | 10.5 3 | | 1.2 0 | 4.2 0/1 | 2.3 0 | 11.3 3/4 | 28.4 |
| Ikertalde/GPS | 29 Apr–10 May 2019 | 406 | 60.2 | 42.7 14 | 14.6 4 | 13.2 4 | 9.1 3 | | – | 2.5 0 | 1.0 0 | 13.5 4 | 28.1 |
| 40dB/El País | 30 Apr–2 May 2019 | 800 | ? | 44.0 14/15 | 14.6 4 | 14.3 4 | 9.4 3 | | | – | – | 12.2 3/4 | 29.4 |
| ElectoPanel/Electomanía | 31 Mar–7 Apr 2019 | ? | ? | 41.8 14 | 15.6 5 | 14.0 4 | 8.5 2 | | | 1.7 0 | 1.6 0 | 12.6 4 | 26.2 |
| ElectoPanel/Electomanía | 24–31 Mar 2019 | ? | ? | 42.0 14 | 15.4 5 | 14.2 4 | 8.2 2 | | | 1.8 0 | 1.6 0 | 12.5 4 | 26.6 |
| ElectoPanel/Electomanía | 17–24 Mar 2019 | ? | ? | 41.9 14 | 15.4 5 | 14.6 4 | 8.4 2 | | | 1.7 0 | 1.7 0 | 12.1 4 | 26.5 |
| ElectoPanel/Electomanía | 10–17 Mar 2019 | ? | ? | 42.4 14 | 15.2 5 | 13.8 4 | 8.6 2 | | | 1.4 0 | 2.0 0 | 12.2 4 | 27.2 |
| ElectoPanel/Electomanía | 3–10 Mar 2019 | ? | ? | 42.3 14 | 15.3 5 | 13.6 4 | 8.4 2 | | | 1.7 0 | 2.0 0 | 12.4 4 | 27.0 |
| ElectoPanel/Electomanía | 22 Feb–3 Mar 2019 | ? | ? | 42.4 14 | 15.1 5 | 13.4 4 | 8.6 2 | | | 1.9 0 | 1.9 0 | 12.6 4 | 27.3 |
| Gizaker/City Council of Bilbao | 19–21 Feb 2019 | 1,000 | 60.1 | 44.8 14/15 | 15.3 5 | 11.7 4 | 7.9 2 | 7.3 2 | 5.7 1/2 | – | – | – | 29.5 |
| Ikertalde/GPS | 29 Jan–9 Feb 2019 | 406 | 61.5 | 42.4 14 | 13.7 4 | 11.8 4 | 11.0 3 | | | 3.6 0 | 0.7 0 | 13.4 4 | 28.7 |
| Gizaker/EiTB | 23 Nov–3 Dec 2018 | 400 | ? | 44.7 14 | 16.1 5 | 12.5 4 | 7.6 2 | | | 4.1 0 | 0.5 0 | 12.9 4 | 28.6 |
| Ikertalde/GPS | 25 Sep–6 Oct 2018 | 406 | 60.5 | 42.3 14 | 13.0 4 | 12.1 4 | 11.8 3 | | | 2.8 0 | – | 14.0 4 | 28.3 |
| Gizaker/EiTB | 14–21 May 2018 | 400 | ? | 42.7 14 | 15.6 5 | 11.5 4 | 9.9 3 | 9.6 3 | 4.3 0 | 3.5 0 | – | – | 27.1 |
| Gizaker/EiTB | 16–20 May 2017 | 400 | ? | 43.8 14 | 13.4 4 | 12.7 4 | 10.1 3 | 6.4 2 | 7.7 2 | 2.9 0 | – | – | 30.4 |
| 2015 municipal election | 24 May 2015 | — | 59.3 | 39.3 13 | 14.0 4 | 12.0 4 | 11.9 4 | 8.5 2 | 6.5 2 | 3.5 0 | 0.4 0 | – | 25.3 |

### Donostia-San Sebastián
#### Color key

Poll conducted after legal ban on opinion polls
| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | PNV | | | | | | | | Lead |
| 2019 municipal election | 26 May 2019 | — | 65.3 | 35.5 10 | 17.5 5 | 21.2 6 | 10.8 3 | | 1.6 0 | 1.3 0 | 9.9 3 | 14.3 |
| Gizaker/EiTB | 24–26 May 2019 | 600 | ? | 37.2 11 | 18.3 5 | 24.3 7 | 7.3 2 | | 2.5 0 | – | 7.9 2 | 12.9 |
| Gizaker/EiTB | 9–14 May 2019 | 400 | 71.5 | 35.1 11 | 18.9 5 | 23.9 7 | 7.1 2 | | 2.7 0 | 0.3 0 | 9.4 2 | 11.2 |
| Ikerfel/Diario Vasco | 30 Apr–14 May 2019 | 505 | ? | 33.6 10/11 | 19.1 5/6 | 20.5 6 | 8.3 2 | | 3.0 0 | 1.8 0 | 11.2 3 | 13.1 |
| Ikertalde/GPS | 29 Apr–10 May 2019 | 406 | 66.5 | 33.3 10 | 19.5 6 | 20.4 6 | 9.0 2 | | 2.8 0 | 1.0 0 | 11.0 3 | 12.9 |
| Ikertalde/GPS | 29 Jan–9 Feb 2019 | 406 | 67.0 | 34.0 10 | 19.6 6 | 19.4 6 | 8.3 2 | 10.2 3 | 3.5 0 | 0.2 0 | – | 14.4 |
| Gizaker/EiTB | 23 Nov–3 Dec 2018 | 400 | ? | 35.4 11 | 21.3 6 | 21.3 6 | 6.7 2 | 8.0 2 | 4.2 0 | 0.4 0 | – | 14.1 |
| Ikertalde/GPS | 25 Sep–6 Oct 2018 | 405 | 63.0 | 32.3 10 | 21.0 6 | 19.5 6 | 8.0 2 | 12.8 3 | 2.2 0 | – | – | 11.3 |
| Gizaker/EiTB | 14–21 May 2018 | 400 | ? | 34.8 11 | 21.9 6 | 20.9 6 | 8.5 2 | 7.0 2 | 4.4 0 | – | – | 12.9 |
| Gizaker/EiTB | 16–20 May 2017 | 400 | ? | 33.9 10 | 22.2 7 | 21.6 6 | 8.8 2 | 7.6 2 | 3.3 0 | – | – | 11.7 |
| 2015 municipal election | 24 May 2015 | — | 66.6 | 29.7 9 | 24.5 7 | 20.9 6 | 9.5 3 | 7.1 2 | 3.7 0 | – | – | 5.2 |

### Durango

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | PNV | | | | | Lead |
| 2019 municipal election | 26 May 2019 | — | 68.2 | 35.3 8 | 32.3 7 | 16.3 4 | 10.0 2 | 4.5 0 | 3.0 |
| City Council of Durango | 2 May 2019 | 600 | ? | 37.9 8 | 32.5 7 | 13.2 3 | 8.9 2 | 5.3 1 | 5.4 |
| City Council of Durango | 31 Jan–5 Feb 2018 | 400 | ? | ? 8 | ? 7 | ? 3 | ? 2 | ? 1 | ? |
| 2015 municipal election | 24 May 2015 | — | 63.2 | 37.0 8 | 31.3 7 | 13.4 3 | 9.5 2 | 7.0 1 | 5.7 |

### Eibar

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | | PNV | | | | Lead |
| 2019 municipal election | 26 May 2019 | — | 67.5 | 39.2 9 | 24.0 5 | 25.9 6 | | 3.5 0 | 6.6 1 | 13.3 |
| Ikerfel/Diario Vasco | 30 Apr–14 May 2019 | 504 | ? | 39.7 9/10 | 24.2 5 | 25.8 5/6 | | 2.5 0 | 6.3 1 | 13.9 |
| 2015 municipal election | 24 May 2015 | — | 62.3 | 41.9 10 | 24.0 5 | 21.2 5 | 6.8 1 | 4.1 0 | – | 17.9 |

### Getxo

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | PNV | | GUK | | | | | | Lead |
| 2019 municipal election | 26 May 2019 | — | 67.5 | 39.1 11 | 16.5 5 | 2.1 0 | 15.1 4 | 10.6 3 | 3.2 0 | 1.6 0 | 8.0 2 | 22.6 |
| Ikerfel/El Correo | 30 Apr–14 May 2019 | 500 | ? | 33.1 9/10 | 17.7 5 | | 15.2 4 | 12.3 3 | 5.2 1 | 4.3 0/1 | 7.9 2 | 7.8 |
| 2015 municipal election | 24 May 2015 | — | 63.5 | 34.1 9 | 18.6 5 | 14.5 4 | 14.4 4 | 7.6 2 | 5.9 1 | 2.0 0 | – | 15.5 |

### Irun

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | SPI | PNV | | | | | | Lead |
| 2019 municipal election | 26 May 2019 | — | 60.8 | 35.7 10 | | 24.9 7 | 13.8 3 | 5.5 1 | | 2.3 0 | 15.4 4 | 10.8 |
| Ikerfel/Diario Vasco | 30 Apr–14 May 2019 | 501 | ? | 32.7 9 | | 20.9 6 | 13.8 4 | 5.7 1 | | 3.4 0 | 20.9 6 | 11.8 |
| 2015 municipal election | 24 May 2015 | — | 60.5 | 33.4 10 | 18.3 5 | 18.2 5 | 12.4 3 | 7.8 2 | 4.0 0 | 3.7 0 | – | 15.1 |

### Vitoria-Gasteiz
#### Color key

Poll conducted after legal ban on opinion polls
| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | | PNV | | | | | | Lead |
| 2019 municipal election | 26 May 2019 | — | 63.3 | 18.5 5 | 20.5 6 | 23.6 7 | 21.4 6 | 9.9 3 | | 2.5 0 | 1.4 0 | 3.1 |
| Gizaker/EiTB | 24–26 May 2019 | 600 | ? | 18.3 5/6 | 23.9 7/8 | 24.4 7/8 | 14.1 4 | 11.6 3 | | 3.1 0 | – | 0.5 |
| Gizaker/EiTB | 9–14 May 2019 | 400 | 70.0 | 19.0 5 | 23.5 7 | 23.1 7 | 14.3 4 | 12.9 4 | | 3.5 0 | 0.7 0 | 0.4 |
| Ikerfel/Diario Vasco | 30 Apr–14 May 2019 | ? | ? | 19.5 6 | 23.7 7 | 21.7 6/7 | 15.1 4 | 12.8 3/4 | | 3.0 0 | 2.1 0 | 2.0 |
| Ikertalde/GPS | 29 Apr–10 May 2019 | 406 | 65.0 | 19.0 5 | 22.2 7 | 22.4 7 | 14.7 4 | 13.7 4 | | 3.2 0 | 1.0 0 | 0.2 |
| Ikertalde/GPS | 29 Jan–9 Feb 2019 | 406 | 65.5 | 21.1 6 | 19.7 6 | 21.2 7 | 12.3 4 | 14.5 4 | | 4.1 0 | 1.7 0 | 0.1 |
| Gizaker/EiTB | 23 Nov–3 Dec 2018 | 400 | ? | 19.0 5 | 19.9 6 | 24.4 7 | 12.6 3 | 14.2 4 | | 6.8 2 | 1.0 0 | 4.5 |
| Ikertalde/GPS | 25 Sep–6 Oct 2018 | 532 | 64.0 | 24.5 7 | 19.7 6 | 21.8 7 | 12.4 3 | 13.5 4 | | 4.0 0 | – | 2.7 |
| Aztiker/Gara | 28 May–20 Jun 2018 | 514 | ? | 24.9 7 | 20.9 6 | 19.9 6 | 12.6 3 | 13.9 4 | | 5.2 1 | – | 4.0 |
| Gizaker/EiTB | 14–21 May 2018 | 400 | ? | 24.9 7 | 19.7 6 | 22.6 7 | 10.1 3 | 8.3 2 | 5.5 1 | 5.1 1 | – | 2.7 |
| Gizaker/EiTB | 16–20 May 2017 | 400 | ? | 25.7 8 | 19.9 6 | 22.5 7 | 11.8 4 | 8.3 2 | 4.6 0 | 3.7 0 | – | 3.2 |
| 2015 municipal election | 24 May 2015 | — | 64.8 | 29.8 9 | 19.5 6 | 16.6 5 | 11.9 4 | 8.7 2 | 5.1 1 | 3.2 0 | 0.3 0 | 10.3 |

## General Assemblies
### Álava

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | | PNV | | | | | | | | Lead |
| 2019 foral election | 26 May 2019 | — | 65.1 | 15.0 8 | 29.4 17 | 21.0 12 | | 18.9 10 | | 2.3 0 | 1.4 0 | 9.9 4 | 8.4 |
| Gizaker/EiTB | 9–14 May 2019 | 550 | 69.7 | 14.0 | 29.5 | 23.3 | | 14.3 | | 2.8 | 0.8 | 14.1 | 6.2 |
| Ikerfel/El Correo | 30 Apr–14 May 2019 | ? | 65.1 | 14.2 6/7 | 27.5 15/16 | 19.7 11 | | 17.4 10 | | 3.3 1 | 2.5 0 | 13.2 6/7 | 7.8 |
| Ikertalde/GPS | 29 Apr–10 May 2019 | 518 | 66.0 | 14.0 | 28.2 | 23.0 | | 13.8 | | 2.0 | 0.8 | 14.7 | 5.2 |
| 2019 general election | 28 Apr 2019 | — | 71.2 | 13.7 | 22.7 | 14.0 | | 22.4 | | 4.0 | 3.2 | 17.7 | 0.3 |
| Gizaker/EiTB | 1–5 Mar 2019 | 450 | ? | 15.8 | 29.1 | 21.6 | | 13.3 | | 3.5 | 0.6 | 14.0 | 7.5 |
| Ikertalde/GPS | 29 Jan–9 Feb 2019 | 574 | 66.8 | 14.3 | 26.4 | 22.2 | | 11.1 | | 4.9 | 1.5 | 15.3 | 4.2 |
| Gizaker/EiTB | 23 Nov–3 Dec 2018 | 550 | ? | 14.9 | 28.5 | 21.1 | | 12.3 | | 4.8 | 0.4 | 15.0 | 7.4 |
| Ikertalde/GPS | 25 Sep–6 Oct 2018 | 742 | 64.5 | 19.2 | 25.9 | 21.9 | | 11.9 | | 3.1 | – | 13.8 | 4.0 |
| Gizaker/EiTB | 14–21 May 2018 | 550 | ? | 18.0 | 26.2 | 22.6 | | 10.0 | 3.5 | 3.8 | – | 13.9 | 3.6 |
| Gizaker/EiTB | 16–20 May 2017 | 550 | ? | 19.2 | 25.1 | 20.2 | | 12.0 | 3.5 | 3.9 | – | 13.2 | 4.9 |
| 2016 regional election | 25 Sep 2016 | — | 59.7 | 18.5 | 28.0 | 17.8 | | 12.9 | | 3.2 | 0.5 | 16.1 | 9.5 |
| 2016 general election | 26 Jun 2016 | — | 66.5 | 20.4 | 15.9 | 9.5 | | 15.7 | | 5.0 | 0.2 | 30.9 | 10.5 |
| 2015 general election | 20 Dec 2015 | — | 71.1 | 18.8 | 15.8 | 11.8 | 27.0 | 14.1 | 3.8 | 5.9 | – | – | 8.2 |
| 2015 foral election | 24 May 2015 | — | 65.6 | 22.0 12 | 21.6 13 | 20.4 11 | 14.6 8 | 11.2 5 | 3.7 1 | 3.1 1 | 0.1 0 | – | 0.4 |

### Biscay

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | PNV | | | | | | | | | Lead |
| 2019 foral election | 26 May 2019 | — | 65.7 | 43.1 25 | 19.7 10 | | 16.5 8 | 6.6 2 | | 1.2 0 | 0.9 0 | 10.5 6 | 23.4 |
| Gizaker/EiTB | 9–14 May 2019 | 600 | 71.0 | 43.9 | 18.5 | | 13.9 | 4.9 | | 1.5 | 1.2 | 14.4 | 25.4 |
| Ikerfel/El Correo | 30 Apr–14 May 2019 | ? | 72.2 | 41.9 26 | 18.4 10 | | 15.6 7 | 6.4 2 | | 2.9 0 | 1.6 0 | 11.3 6 | 23.5 |
| Ikertalde/GPS | 29 Apr–10 May 2019 | 1,036 | 63.0 | 41.8 | 20.2 | | 13.0 | 5.8 | | 2.0 | 0.5 | 13.5 | 21.6 |
| 2019 general election | 28 Apr 2019 | — | 75.8 | 34.4 | 13.4 | | 19.9 | 7.2 | | 3.1 | 2.3 | 17.7 | 14.5 |
| Gizaker/EiTB | 1–5 Mar 2019 | 650 | ? | 45.1 | 20.1 | | 13.2 | 6.6 | | 1.6 | 0.2 | 11.7 | 25.0 |
| Ikertalde/GPS | 29 Jan–9 Feb 2019 | 1,106 | 63.5 | 41.8 | 20.1 | | 11.8 | 5.9 | | 2.5 | 1.0 | 13.1 | 21.7 |
| Gizaker/Biscay Deputation | 10–15 Dec 2018 | 1,600 | 62.6 | 43.5 25 | 19.6 11 | | 12.2 7 | 6.2 1 | | 2.5 0 | 0.6 0 | 13.6 7 | 23.9 |
| Gizaker/EiTB | 23 Nov–3 Dec 2018 | 600 | ? | 44.0 | 19.3 | | 12.8 | 5.8 | | 2.5 | 0.2 | 14.2 | 24.7 |
| Ikertalde/GPS | 25 Sep–6 Oct 2018 | 1,315 | 61.5 | 41.5 | 19.6 | | 12.0 | 7.8 | | 2.3 | – | 13.4 | 21.9 |
| Ikerfel/Biscay Deputation | 28 May–23 Jun 2018 | 3,002 | 62.0 | 40.8 24/25 | 19.4 9/10 | | 13.0 7/8 | 7.4 3/4 | 1.6 0 | 2.0 0 | – | 13.0 6 | 21.4 |
| Gizaker/EiTB | 14–21 May 2018 | 600 | ? | 43.3 | 19.7 | | 11.5 | 6.3 | 2.0 | 2.0 | – | 12.2 | 23.6 |
| Gizaker/Biscay Deputation | 27 Nov–11 Dec 2017 | 2,000 | 61.5 | 42.7 25 | 19.7 11 | | 12.6 7 | 7.4 3 | – | – | – | 11.5 5 | 23.0 |
| Ikerfel/Biscay Deputation | 15 May–8 Jun 2017 | 3,013 | 60.2 | 41.2 24 | 18.4 9 | | 13.6 8 | 8.5 4 | 2.1 0 | 1.4 0 | – | 13.0 6 | 22.8 |
| Gizaker/EiTB | 16–20 May 2017 | 600 | ? | 42.4 | 18.5 | | 12.9 | 7.3 | 2.9 | 1.9 | – | 12.9 | 23.9 |
| 2016 regional election | 25 Sep 2016 | — | 60.5 | 41.8 | 17.5 | | 11.7 | 9.7 | | 1.9 | – | 14.8 | 24.3 |
| 2016 general election | 26 Jun 2016 | — | 66.0 | 28.2 | 10.9 | | 13.9 | 12.7 | | 3.3 | 0.1 | 28.9 | 0.7 |
| 2015 general election | 20 Dec 2015 | — | 69.4 | 27.9 | 12.5 | 26.1 | 12.5 | 11.4 | 2.8 | 3.8 | – | – | 1.8 |
| 2015 foral election | 24 May 2015 | — | 62.6 | 37.6 23 | 18.9 11 | 14.5 6 | 12.5 7 | 8.2 4 | 2.6 0 | 2.1 0 | 0.3 0 | – | 18.7 |

### Gipuzkoa

| Polling firm/Commissioner | Fieldwork date | Sample size | Turnout | PNV | | | | | | | | | Lead |
| 2019 foral election | 26 May 2019 | — | 66.6 | 35.6 20 | 31.6 17 | 17.1 9 | | 4.7 1 | | 1.0 0 | 8.9 4 | – | 4.0 |
| Gizaker/EiTB | 9–14 May 2019 | 600 | 71.6 | 36.8 | 32.5 | 14.7 | | 3.3 | | 1.0 | 11.1 | 0.2 | 4.3 |
| Ikerfel/El Correo | 30 Apr–14 May 2019 | ? | 69.2 | 34.9 20 | 27.7 15 | 16.3 9 | | 4.5 1 | | 2.0 0 | 11.9 6 | 1.5 0 | 6.2 |
| Ikertalde/GPS | 29 Apr–10 May 2019 | 588 | 64.7 | 35.0 | 31.7 | 13.5 | | 4.7 | | 1.3 | 12.0 | 0.3 | 3.3 |
| 2019 general election | 28 Apr 2019 | — | 74.0 | 29.1 | 23.4 | 18.8 | | 5.0 | | 2.9 | 17.3 | 1.6 | 5.7 |
| Gizaker/Gipuzkoa Deputation | 1–8 Apr 2019 | 1,500 | 64.3 | 35.0 19/20 | 31.3 16/18 | 15.2 7/8 | | 4.4 1 | | 1.2 0 | 11.9 6 | 0.3 0 | 3.7 |
| Gizaker/EiTB | 1–5 Mar 2019 | 550 | ? | 36.4 | 32.7 | 13.7 | | 3.2 | | 1.3 | 12.6 | 0.0 | 3.7 |
| Ikertalde/GPS | 29 Jan–9 Feb 2019 | 812 | 65.0 | 34.8 | 30.1 | 13.3 | | 4.7 | | 2.2 | 12.6 | 0.5 | 4.7 |
| Gizaker/EiTB | 23 Nov–3 Dec 2018 | 600 | ? | 37.8 | 31.5 | 12.7 | | 4.0 | | 2.6 | 11.2 | 0.1 | 6.3 |
| Gizaker/Gipuzkoa Deputation | 15–21 Nov 2018 | 1,500 | 63.5 | 35.6 19/20 | 30.9 16/18 | 15.0 8 | | 4.1 1 | | 2.1 0/1 | 11.7 6 | – | 4.7 |
| Ikertalde/GPS | 25 Sep–6 Oct 2018 | 1,092 | 62.0 | 35.0 | 29.3 | 14.2 | | 5.5 | | 1.5 | 12.4 | – | 5.7 |
| Gizaker/Gipuzkoa Deputation | 11–15 Jun 2018 | 1,500 | 64.9 | 35.4 20 | 30.9 18 | 15.4 7 | | 4.3 1 | – | – | 10.3 5 | – | 4.5 |
| Gizaker/EiTB | 14–21 May 2018 | 600 | ? | 38.8 | 30.7 | 14.0 | | 3.5 | 1.5 | 1.2 | 10.2 | – | 8.1 |
| Gizaker/Gipuzkoa Deputation | 11–18 Oct 2017 | 1,500 | 63.1 | 34.1 20 | 31.0 18 | 15.2 7 | | 5.0 1 | – | – | 11.2 5 | – | 3.1 |
| Gizaker/EiTB | 16–20 May 2017 | 600 | ? | 36.0 | 29.0 | 15.6 | | 4.7 | 2.2 | 0.9 | 11.3 | – | 7.0 |
| Gizaker/Gipuzkoa Deputation | 10–13 May 2017 | 1,500 | 62.3 | 36.4 20/21 | 29.8 17 | 15.2 8/9 | | 4.6 1 | – | – | 10.8 4 | – | 6.6 |
| 2016 regional election | 25 Sep 2016 | — | 59.4 | 34.1 | 28.7 | 11.8 | | 7.2 | | 1.7 | 14.2 | – | 5.4 |
| 2016 general election | 26 Jun 2016 | — | 63.3 | 23.3 | 19.1 | 14.1 | | 9.7 | | 3.2 | 28.6 | – | 5.3 |
| 2015 general election | 20 Dec 2015 | — | 67.4 | 23.5 | 20.9 | 13.3 | 25.3 | 8.7 | 2.8 | 3.8 | – | – | 1.8 |
| 2015 foral election | 24 May 2015 | — | 64.9 | 31.6 18 | 28.8 17 | 16.5 9 | 12.1 6 | 5.4 1 | 2.4 0 | 1.5 0 | – | – | 2.8 |