In the run up to the 2015 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 22 May 2011, to the day the next elections were held, on 24 May 2015.

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 BD Lead 2015 municipal election 24 May 2015 58.7 26.8 26.9 9.2 14.2 1.5 – – 4.6 12.0 0.1 Ikerfel/El Correo 29 Apr–2 May 2015?? 26.9 26.1 8.5 15.6 2.4 – – 4.4 13.3 0.8 Barakaldo Digital 18–20 Apr 2015 543? 21.1 24.0 3.8 14.5 – 24.6 3.8 – 8.2 0.6 2011 municipal election 22 May 2011 56.5 29.1 24.9 17.5 15.4 6.1* – – – – – 4.2

Bilbao Polling firm/Commissioner Fieldwork date Sample size Turnout UB Lead 2015 municipal election 24 May 2015 59.3 39.3 11.9 14.0 12.0 0.8 3.5 6.5 8.5 25.3 Sigma Dos/El Mundo 13–14 May 2015 500? 39.7 13.4 14.2 9.7 – 4.2 – 14.0 25.5 JM&A/Público 12 May 2015?????? – – –?? JM&A/Público 3 May 2015?? 38.1 10.4 11.1 10.6 5.1 0.8 3.7 – 14.3 23.8 Ikerfel/El Correo 29 Apr–2 May 2015?? 41.2 9.7 15.5 10.4 1.4 4.3 – 14.7 25.7 Ikertalde/GPS 22–29 Apr 2015 406 67.0 38.0 14.5 14.6 12.0 0.3 3.5 – 13.0 23.4 Gizaker/Grupo Noticias 20–23 Apr 2015 475 66.2 41.1 11.7 17.3 12.1 0.8 3.7 – 9.2 23.8 Sigma Dos/El Mundo 25–26 Mar 2015 500? 39.4 13.3 10.6 10.5 – – – 11.8 4.9 3.5 – 26.1 Ikertalde/GPS 9–14 Feb 2015 406 67.0 36.0 13.5 14.0 11.5 3.0 1.0 – 16.0 – – – 20.0 Ikerfel/El Correo 7–13 Jan 2015?? 44.6 9.4 13.5 12.9 8.6 4.8 – – 0.4 – – 31.1? 40.3 9.4 11.1 10.1 4.7 4.1 – 15.7 0.3 – – 24.6 Torrene Consulting/Gara 13–31 Oct 2014? 64.4 37.8 13.1 17.5 15.4 2.2 – – 12.5 – – – 20.3 Ikertalde/GPS 6–13 Oct 2014 406 63.0 38.9 14.2 16.0 12.5 2.5 1.0 1.0 8.5 – – – 22.9 2011 municipal election 22 May 2011 61.1 44.2 17.2 14.2 13.4 3.4* 1.1 – – – – – 27.0

Donostia-San Sebastián Polling firm/Commissioner Fieldwork date Sample size Turnout Lead 2015 municipal election 24 May 2015 66.6 20.9 24.5 9.5 29.7 0.7 – 3.7 7.1 5.1 Gizaker/Grupo Noticias 14 May 2015 400 66.6 27.1 19.1 12.0 28.9 – – 2.5 3.4 1.8 Ikerfel/El Correo 29 Apr–2 May 2015?? 25.9 19.5 9.6 29.8 1.1 – 5.2 8.2 3.9 Ikertalde/GPS 22–29 Apr 2015 406 63.0 25.8 17.5 15.5 26.0 0.2 – 4.2 6.0 0.2 Gizaker/Grupo Noticias 14–18 Apr 2015 352 69.7 26.8 17.3 13.6 27.2 0.6 5.2 2.5 3.1 0.4 Ikertalde/GPS 9–14 Feb 2015 406 65.0 22.7 17.0 15.0 24.8 2.5 1.0 – – 12.5 – 2.1 Ikerfel/El Correo 7–13 Jan 2015?? 21.6 21.1 10.1 32.8 8.6 1.0 – – 0.9 – 11.2? 17.9 18.2 10.1 29.4 4.3 1.0 – 14.6 0.9 – 11.2 Torrene Consulting/Gara 13–31 Oct 2014?? 27.8 16.7 9.7 20.8 – – – 12.5 – – 7.0 Ikertalde/GPS 6–13 Oct 2014 406 62.0 25.0 17.4 14.5 21.2 3.0 1.3 1.0 9.4 – – 3.8 2011 municipal election 22 May 2011 66.6 24.3 22.6 19.0 17.9 2.6* 1.5 – – – – 1.7

Durango Polling firm/Commissioner Fieldwork date Sample size Turnout SQ-2D Lead 2015 municipal election 24 May 2015 63.2 37.0 31.3 9.5 7.0 13.4 5.7 Gizaker/City Council of Durango 10 Mar 2015 557? 36.0 35.5 9.5 8.0 2.2 8.0 0.5 2011 municipal election 22 May 2011 64.1 33.9 26.6 13.1 10.9 10.0 3.4* – 7.3

Eibar Polling firm/Commissioner Fieldwork date Sample size Turnout Lead 2015 municipal election 24 May 2015 62.3 41.9 24.0 21.2 4.1 6.8 17.9 Ikerfel/El Correo 29 Apr–2 May 2015?? 36.2 26.5 24.3 6.9 6.1 9.7 2011 municipal election 22 May 2011 64.1 35.4 25.9 18.5 7.8 – 9.5

Getxo Polling firm/Commissioner Fieldwork date Sample size Turnout GUK Lead 2015 municipal election 24 May 2015 63.5 34.1 18.6 14.4 7.6 0.8 14.5 5.9 2.0 15.5 Ikerfel/El Correo 29 Apr–2 May 2015?? 34.2 18.3 16.1 9.2 1.2 14.2 5.7 1.1 15.9 2011 municipal election 22 May 2011 67.7 32.9 30.1 16.4 9.7 2.5* 1.4 – – – 2.8

Irun Polling firm/Commissioner Fieldwork date Sample size Turnout SPI Lead 2015 municipal election 24 May 2015 60.5 33.4 18.2 12.4 7.8 0.8 18.3 3.7 4.0 15.1 Ikerfel/El Correo 29 Apr–2 May 2015?? 25.7 20.6 14.6 9.0 1.5 15.5 6.5 6.9 5.1 2011 municipal election 22 May 2011 55.7 30.9 17.9 17.2 17.1 6.1* 2.8 – – – 13.0

Vitoria-Gasteiz Polling firm/Commissioner Fieldwork date Sample size Turnout EBB Lead 2015 municipal election 24 May 2015 64.8 29.8 16.6 11.9 19.5 – 0.8 8.7 3.2 5.1 10.3 Ikerfel/El Correo 29 Apr–2 May 2015?? 20.1 18.9 14.4 19.7 – 1.8 10.9 5.3 5.2 0.4 Ikertalde/GPS 22–29 Apr 2015 406 67.0 20.5 20.0 16.5 19.5 – 0.5 9.0 4.5 5.0 0.5 CIS 23 Mar–19 Apr 2015 499? 25.9 17.7 12.8 17.8 – 0.5 6.4 3.3 11.4 8.1 Gizaker/Grupo Noticias 13–14 Apr 2015 400 65.8 22.3 22.5 14.2 18.6 – 1.4 10.5 3.5 3.4 0.2 Ikertalde/GPS 9–14 Feb 2015 406 67.0 20.5 19.0 16.5 19.0 – 2.5 3.5 – 14.5 – – 1.5 Ikerfel/El Correo 7–13 Jan 2015?? 18.5 20.8 16.3 18.2 – 5.5 9.5 – – 3.7 – 2.3? 18.5 18.4 13.3 14.3 – 5.3 4.7 – 16.3 3.0 – 0.1 Torrene Consulting/Gara 13–31 Oct 2014? 62.8 22.7 21.0 15.1 19.8 – 3.5 2.3 – 10.5 – – 1.7 Ikertalde/GPS 6–13 Oct 2014 406 65.0 19.8 20.0 16.1 19.7 – 2.3 3.0 1.5 11.4 – – 0.2 Gizaker/Grupo Noticias 12–16 Sep 2014 400? 22.1 22.3 15.0 19.4 – 3.0 3.7 – 11.2 – – 0.2 Gizaker/Grupo Noticias 4–6 Jun 2013 600? 22.8 24.3 17.8 19.0 2.7 5.0 3.8 – – – – 1.5 2011 municipal election 22 May 2011 61.5 29.2 19.1 18.7 17.8 4.4 2.3 – – – – – 10.1

General Assemblies Álava Polling firm/Commissioner Fieldwork date Sample size Turnout EBB Lead 2015 foral election 24 May 2015 65.6 22.0 21.6 20.4 11.2 – 0.7 14.6 3.1 3.7 0.4 Ikerfel/El Correo 29 Apr–2 May 2015 778? 14.2 22.8 21.3 12.6 – 1.8 12.4 6.3 5.2 1.5 Ikertalde/GPS 22–29 Apr 2015 518 68.0 19.7 20.7 20.4 15.0 – 0.7 12.2 3.7 3.0 0.3 Gizaker/Grupo Noticias 13–20 Apr 2015 1,150 72.0 16.4 24.6 22.3 13.9 – – 10.0 4.1 – 2.3 Ikertalde/GPS 9–14 Feb 2015 518 68.0 20.5 21.0 19.5 14.5 – 3.0 1.5 – 15.0 – – 0.5 Ikerfel/El Correo 7–13 Jan 2015 778? 13.7 19.9 17.3 12.5 – 4.7 4.2 – 20.7 2.2 – 0.8 Torrene Consulting/Gara 13–31 Oct 2014 400 65.3 20.3 23.5 21.5 14.5 – 2.7 2.4 – 8.5 – – 2.0 Ikertalde/GPS 6–13 Oct 2014 490 65.0 19.5 22.9 21.9 15.1 – 2.7 1.3 2.0 9.6 – – 1.0 Gizaker/Grupo Noticias 12–16 Sep 2014 750? 16.9 24.8 22.2 12.4 – 3.1 4.0 – 13.6 – – 2.6 2014 EP election 25 May 2014 42.7 16.0 17.2 19.5 15.2 – 4.5 6.3 2.9 8.9 1.1 – 2.3 Gizaker/Grupo Noticias 7–10 Jan 2014 940? 16.4 27.2 23.5 17.9 1.8 4.2 3.5 – – – – 3.7 2012 regional election 21 Oct 2012 63.6 18.7 25.5 21.7 19.3 1.6 3.5 2.9 2.7 – – – 3.8 2011 general election 20 Nov 2011 68.7 27.2 18.8 19.1 23.4 – 2.8 4.1 2.1 – – – 3.8 2011 foral election 22 May 2011 63.6 26.0 23.7 21.0 16.3 4.1 2.7 1.8 – – – – – 2.3

Biscay Polling firm/Commissioner Fieldwork date Sample size Turnout EBB Lead 2015 foral election 24 May 2015 62.6 37.6 18.9 12.5 8.2 – 0.6 14.5 2.1 2.6 18.7 Ikerfel/El Correo 29 Apr–2 May 2015 2,028? 36.1 17.1 11.6 8.2 – 0.8 14.3 3.2 4.8 19.0 Ikertalde/GPS 22–29 Apr 2015 1,036 68.5 34.0 20.9 14.1 9.7 – 0.4 12.3 3.0 1.5 13.1 Gizaker/Grupo Noticias 20–23 Apr 2015 1,600 65.9 38.8 20.1 13.2 8.7 – – 10.4 3.7 – 18.7 Ikertalde/GPS 9–14 Feb 2015 1,036 69.0 34.0 20.5 14.0 9.5 – 1.0 2.0 – 14.5 – – 13.5 Ikerfel/El Correo 7–13 Jan 2015 1,170? 34.3 13.2 10.9 8.2 – 1.9 5.0 – 21.2 1.0 – 13.1 Gizaker/Biscay Deputation 15–18 Dec 2014 1,600 74.4 37.8 20.3 14.4 9.8 1.2 1.2 1.2 – 11.8 – – 17.5 Torrene Consulting/Gara 13–31 Oct 2014 400 66.6 36.8 21.6 15.1 7.9 – – 3.6 – 12.2 – – 15.2 Ikertalde/GPS 6–13 Oct 2014 1,106 66.0 35.9 21.6 13.8 9.4 – 2.0 1.8 1.0 9.5 – – 14.3 2014 EP election 25 May 2014 44.3 31.8 19.9 13.6 10.0 – 3.2 5.7 1.4 6.7 0.8 – 11.9 Gizaker/Biscay Deputation 12–20 Mar 2014 1,600? 39.8 22.3 16.6 10.5 2.6 – 3.1 – – – – 17.5 2012 regional election 21 Oct 2012 64.5 37.9 21.2 18.7 11.7 1.6 1.8 2.7 0.8 – – – 16.7 2011 general election 20 Nov 2011 68.1 32.6 19.2 21.4 17.7 – 1.7 3.8 1.2 – – – 11.2 2011 foral election 22 May 2011 64.0 37.2 21.0 16.7 13.8 3.5 2.7 0.6 – – – – – 16.2

Gipuzkoa Polling firm/Commissioner Fieldwork date Sample size Turnout EBB Lead 2015 foral election 24 May 2015 64.9 28.8 31.6 16.5 5.4 – 0.3 12.1 1.5 2.4 2.8 Ikerfel/El Correo 29 Apr–2 May 2015 1,958? 32.7 28.6 12.4 6.4 – 0.6 13.0 2.0 4.2 4.1 Ikertalde/GPS 22–29 Apr 2015 616 68.0 31.0 26.4 15.1 8.2 – 0.2 11.1 1.0 2.5 4.6 Gizaker/Grupo Noticias 14–18 Apr 2015 1,500 66.2 34.5 31.8 13.8 5.0 – – 8.5 1.3 2.7 2.7 Ikertalde/GPS 9–14 Feb 2015 588 68.0 29.5 27.5 14.0 8.5 – 1.0 2.0 – 13.5 – – 2.0 Ikerfel/El Correo 7–13 Jan 2015 1,052? 27.2 25.9 11.7 5.3 – 2.4 4.6 – 19.4 0.7 – 1.3 Torrene Consulting/Gara 13–31 Oct 2014 600 61.0 30.9 24.5 16.1 8.6 – – 1.7 – 13.3 – – 6.3 Ikertalde/GPS 6–13 Oct 2014 602 64.0 32.9 25.8 14.1 8.2 – 1.5 2.0 1.0 8.5 – – 7.1 2014 EP election 25 May 2014 41.4 31.1 24.5 13.7 7.9 – 3.0 5.0 1.3 6.4 0.7 – 6.6 2012 regional election 21 Oct 2012 63.3 31.8 31.6 19.0 8.4 1.4 1.4 2.7 0.7 – – – 0.2 2011 general election 20 Nov 2011 65.5 34.8 22.4 21.0 13.7 – 1.5 3.4 1.2 – – – 12.4 2011 foral election 22 May 2011 62.7 34.6 23.5 17.2 10.0 5.0 2.6 0.7 – – – – – 11.1

Notes

References