Opinion polling for the 2015 Spanish local elections (Basque Country)

In the run up to the 2015 Spanish local elections, various organisations carried out opinion polling to gauge voting intention in Spain. Results of such polls for municipalities in the Basque Country are displayed in this article. The date ranges 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		PNV							BD		Lead
2015 municipal election	24 May 2015	N/A	58.7	26.8 8	26.9 8	9.2 3	14.2 4	[lower-alpha 1]	1.5 0	–	–	4.6 0	12.0 4	0.1
Ikerfel/El Correo[1]	29 Apr–2 May 2015	?	?	26.9 8	26.1 8	8.5 2	15.6 5	[lower-alpha 1]	2.4 0	–	–	4.4 0	13.3 4	0.8
Barakaldo Digital[2]	18–20 Apr 2015	543	?	21.1	24.0	3.8	14.5	[lower-alpha 1]	–	24.6	3.8	–	8.2	0.6
2011 municipal election	22 May 2011	N/A	56.5	29.1 8	24.9 7	17.5 5	15.4 4	6.1* 1	–	–	–	–	–	4.2
(*) Results for United Left–Greens.

Bilbao

Polling firm/Commissioner	Fieldwork date	Sample size	Turnout	PNV										UB	Lead
2015 municipal election	24 May 2015	N/A	59.3	39.3 13	11.9 4	14.0 4	12.0 4	[lower-alpha 2]	0.8 0	[lower-alpha 2]	[lower-alpha 2]	3.5 0	6.5 2	8.5 2	25.3
Sigma Dos/El Mundo[3][4]	13–14 May 2015	500	?	39.7 13	13.4 4	14.2 4/5	9.7 3	[lower-alpha 2]	–	[lower-alpha 2]	[lower-alpha 2]	4.2 0	–	14.0 4/5	25.5
JM&A/Público[5]	12 May 2015	?	?	? 13	? 4	? 5	? 3	[lower-alpha 2]	–	[lower-alpha 2]	[lower-alpha 2]	–	–	? 4	?
JM&A/Público[6][7]	3 May 2015	?	?	38.1 13	10.4 3	11.1 4	10.6 3	5.1 0	0.8 0	[lower-alpha 2]	[lower-alpha 2]	3.7 0	–	14.3 5	23.8
Ikerfel/El Correo[8]	29 Apr–2 May 2015	?	?	41.2 13/14	9.7 3	15.5 4/5	10.4 3	[lower-alpha 2]	1.4 0	[lower-alpha 2]	[lower-alpha 2]	4.3 0	–	14.7 4/5	25.7
Ikertalde/GPS[9][10]	22–29 Apr 2015	406	67.0	38.0 13	14.5 4	14.6 4	12.0 4	[lower-alpha 2]	0.3 0	[lower-alpha 2]	[lower-alpha 2]	3.5 0	–	13.0 4	23.4
Gizaker/Grupo Noticias[11][12]	20–23 Apr 2015	475	66.2	41.1 13/14	11.7 4	17.3 5	12.1 3/4	[lower-alpha 2]	0.8 0	[lower-alpha 2]	[lower-alpha 2]	3.7 0	–	9.2 3	23.8
Sigma Dos/El Mundo[13][14]	25–26 Mar 2015	500	?	39.4 13/14	13.3 4/5	10.6 3/4	10.5 3/4	–	–	–	11.8 4	4.9 0/1	3.5 0	–	26.1
Ikertalde/GPS[15][16]	9–14 Feb 2015	406	67.0	36.0 12	13.5 4	14.0 4	11.5 4	3.0 0	1.0 0	–	16.0 5	–	–	–	20.0
Ikerfel/El Correo[17][18]	7–13 Jan 2015	?	?	44.6 15	9.4 3	13.5 4	12.9 4	8.6 2/3	4.8 0/1	–	–	0.4 0	–	–	31.1
			?	40.3 13/14	9.4 3	11.1 3/4	10.1 3	4.7 0/1	4.1 0	–	15.7 5	0.3 0	–	–	24.6
Torrene Consulting/Gara[19][20][21][22]	13–31 Oct 2014	?	64.4	37.8 12	13.1 4	17.5 5	15.4 4	2.2 0	–	–	12.5 4	–	–	–	20.3
Ikertalde/GPS[23][24]	6–13 Oct 2014	406	63.0	38.9 13	14.2 5	16.0 5	12.5 4	2.5 0	1.0 0	1.0 0	8.5 2	–	–	–	22.9
2011 municipal election	22 May 2011	N/A	61.1	44.2 15	17.2 6	14.2 4	13.4 4	3.4* 0	1.1 0	–	–	–	–	–	27.0
(*) Results for United Left–Greens.

Donostia-San Sebastián

Polling firm/Commissioner	Fieldwork date	Sample size	Turnout				PNV							Lead
2015 municipal election	24 May 2015	N/A	66.6	20.9 6	24.5 7	9.5 3	29.7 9	[lower-alpha 1]	0.7 0	[lower-alpha 1]	–	3.7 0	7.1 2	5.1
Gizaker/Grupo Noticias[25]	14 May 2015	400	66.6	27.1 8/9	19.1 6	12.0 3/4	28.9 9/10	[lower-alpha 1]	–	[lower-alpha 1]	–	2.5 0	3.4 0	1.8
Ikerfel/El Correo[8]	29 Apr–2 May 2015	?	?	25.9 7/8	19.5 5/6	9.6 2/3	29.8 9	[lower-alpha 1]	1.1 0	[lower-alpha 1]	–	5.2 0/1	8.2 2	3.9
Ikertalde/GPS[9][10]	22–29 Apr 2015	406	63.0	25.8 8	17.5 5	15.5 5	26.0 8	[lower-alpha 1]	0.2 0	[lower-alpha 1]	–	4.2 0	6.0 1	0.2
Gizaker/Grupo Noticias[26][27]	14–18 Apr 2015	352	69.7	26.8 8/9	17.3 5	13.6 4	27.2 9	[lower-alpha 1]	0.6 0	[lower-alpha 1]	5.2 0/1	2.5 0	3.1 0	0.4
Ikertalde/GPS[15][16]	9–14 Feb 2015	406	65.0	22.7 7	17.0 5	15.0 4	24.8 7	2.5 0	1.0 0	–	–	12.5 4	–	2.1
Ikerfel/El Correo[17][18]	7–13 Jan 2015	?	?	21.6 6	21.1 6	10.1 3	32.8 10	8.6 2	1.0 0	–	–	0.9 0	–	11.2
			?	17.9 5/6	18.2 5/6	10.1 3	29.4 9	4.3 0	1.0 0	–	14.6 4/5	0.9 0	–	11.2
Torrene Consulting/Gara[28][29][30][31]	13–31 Oct 2014	?	?	27.8 9	16.7 5	9.7 3	20.8 6	–	–	–	12.5 4	–	–	7.0
Ikertalde/GPS[23][24]	6–13 Oct 2014	406	62.0	25.0 8	17.4 5	14.5 4	21.2 7	3.0 0	1.3 0	1.0 0	9.4 3	–	–	3.8
2011 municipal election	22 May 2011	N/A	66.6	24.3 8	22.6 7	19.0 6	17.9 6	2.6* 0	1.5 0	–	–	–	–	1.7
(*) Results for United Left–Greens.

Durango

Polling firm/Commissioner	Fieldwork date	Sample size	Turnout	PNV						SQ-2D	Lead
2015 municipal election	24 May 2015	N/A	63.2	37.0 8	31.3 7	9.5 2	7.0 1	[lower-alpha 3]	[lower-alpha 4]	13.4 3	5.7
Gizaker/City Council of Durango[32][33]	10 Mar 2015	557	?	36.0 8/9	35.5 8/9	9.5 2	8.0 1/2	[lower-alpha 3]	2.2 0	8.0 1/2	0.5
2011 municipal election	22 May 2011	N/A	64.1	33.9 8	26.6 6	13.1 3	10.9 2	10.0 2	3.4* 2	–	7.3
(*) Results for United Left–Greens.

Eibar

Polling firm/Commissioner	Fieldwork date	Sample size	Turnout			PNV			Lead
2015 municipal election	24 May 2015	N/A	62.3	41.9 10	24.0 5	21.2 5	4.1 0	6.8 1	17.9
Ikerfel/El Correo[1][34]	29 Apr–2 May 2015	?	?	36.2 8	26.5 6	24.3 5	6.9 1	6.1 1	9.7
2011 municipal election	22 May 2011	N/A	64.1	35.4 9	25.9 6	18.5 4	7.8 2	–	9.5

Getxo

Polling firm/Commissioner	Fieldwork date	Sample size	Turnout	PNV						GUK			Lead
2015 municipal election	24 May 2015	N/A	63.5	34.1 9	18.6 5	14.4 4	7.6 2	[lower-alpha 5]	0.8 0	14.5 4	5.9 1	2.0 0	15.5
Ikerfel/El Correo[1]	29 Apr–2 May 2015	?	?	34.2 9	18.3 5	16.1 4	9.2 2	[lower-alpha 5]	1.2 0	14.2 4	5.7 1	1.1 0	15.9
2011 municipal election	22 May 2011	N/A	67.7	32.9 10	30.1 9	16.4 4	9.7 2	2.5* 0	1.4 0	–	–	–	2.8
(*) Results for United Left–Greens.

Irun

Polling firm/Commissioner	Fieldwork date	Sample size	Turnout		PNV					SPI			Lead
2015 municipal election	24 May 2015	N/A	60.5	33.4 10	18.2 5	12.4 3	7.8 2	[lower-alpha 1]	0.8 0	18.3 5	3.7 0	4.0 0	15.1
Ikerfel/El Correo[1][34]	29 Apr–2 May 2015	?	?	25.7 7	20.6 5/6	14.6 4	9.0 2	[lower-alpha 1]	1.5 0	15.5 4	6.5 1	6.9 1/2	5.1
2011 municipal election	22 May 2011	N/A	55.7	30.9 9	17.9 5	17.2 5	17.1 5	6.1* 1	2.8 0	–	–	–	13.0
(*) Results for United Left–Greens.

Vitoria-Gasteiz

Polling firm/Commissioner	Fieldwork date	Sample size	Turnout		PNV			EBB							Lead
2015 municipal election	24 May 2015	N/A	64.8	29.8 9	16.6 5	11.9 4	19.5 6	–	0.8 0	[lower-alpha 1]	[lower-alpha 1]	8.7 2	3.2 0	5.1 1	10.3
Ikerfel/El Correo[8]	29 Apr–2 May 2015	?	?	20.1 6	18.9 6	14.4 4	19.7 6	–	1.8 0	[lower-alpha 1]	[lower-alpha 1]	10.9 3	5.3 1	5.2 1	0.4
Ikertalde/GPS[9][10]	22–29 Apr 2015	406	67.0	20.5 6	20.0 6	16.5 5	19.5 6	–	0.5 0	[lower-alpha 1]	[lower-alpha 1]	9.0 3	4.5 0	5.0 1	0.5
CIS[35][36]	23 Mar–19 Apr 2015	499	?	25.9 8	17.7 5	12.8 4	17.8 5	–	0.5 0	[lower-alpha 1]	[lower-alpha 1]	6.4 2	3.3 0	11.4 3	8.1
Gizaker/Grupo Noticias[37][38]	13–14 Apr 2015	400	65.8	22.3 7	22.5 7	14.2 4	18.6 6	–	1.4 0	[lower-alpha 1]	[lower-alpha 1]	10.5 3	3.5 0	3.4 0	0.2
Ikertalde/GPS[15][16]	9–14 Feb 2015	406	67.0	20.5 6	19.0 6	16.5 5	19.0 6	–	2.5 0	3.5 0	–	14.5 4	–	–	1.5
Ikerfel/El Correo[39][18]	7–13 Jan 2015	?	?	18.5 6	20.8 6/7	16.3 5	18.2 5/6	–	5.5 1	9.5 3	–	–	3.7 0	–	2.3
			?	18.5 6	18.4 6	13.3 4	14.3 4/5	–	5.3 0/1	4.7 0/1	–	16.3 5	3.0 0	–	0.1
Torrene Consulting/Gara[40][41]	13–31 Oct 2014	?	62.8	22.7 7	21.0 6	15.1 5	19.8 6	–	3.5 0	2.3 0	–	10.5 3	–	–	1.7
Ikertalde/GPS[23][24]	6–13 Oct 2014	406	65.0	19.8 6	20.0 7	16.1 5	19.7 6	–	2.3 0	3.0 0	1.5 0	11.4 3	–	–	0.2
Gizaker/Grupo Noticias[42][43]	12–16 Sep 2014	400	?	22.1 7	22.3 7	15.0 4	19.4 6	–	3.0 0	3.7 0	–	11.2 3	–	–	0.2
Gizaker/Grupo Noticias[44][45]	4–6 Jun 2013	600	?	22.8 7	24.3 7/8	17.8 5/6	19.0 6	2.7 0	5.0 1	3.8 0	–	–	–	–	1.5
2011 municipal election	22 May 2011	N/A	61.5	29.2 9	19.1 6	18.7 6	17.8 6	4.4 0	2.3 0	–	–	–	–	–	10.1

Juntas Generales

Álava

Polling firm/Commissioner	Fieldwork date	Sample size	Turnout		PNV			EBB								Lead
2015 foral election	24 May 2015	N/A	65.6	22.0 12	21.6 13	20.4 11	11.2 5	–	[lower-alpha 3]	0.7 0	[lower-alpha 1]	[lower-alpha 1]	14.6 8	3.1 1	3.7 1	0.4
Ikerfel/El Correo[46]	29 Apr–2 May 2015	778	?	14.2 8	22.8 13	21.3 12	12.6 6	–	[lower-alpha 3]	1.8 0	[lower-alpha 1]	[lower-alpha 1]	12.4 7	6.3 3	5.2 2	1.5
Ikertalde/GPS[9][47]	22–29 Apr 2015	518	68.0	19.7	20.7	20.4	15.0	–	[lower-alpha 3]	0.7	[lower-alpha 1]	[lower-alpha 1]	12.2	3.7	3.0	0.3
Gizaker/Grupo Noticias[48][49]	13–20 Apr 2015	1,150	72.0	16.4 9	24.6 16	22.3 13	13.9 8	–	[lower-alpha 3]	–	[lower-alpha 1]	[lower-alpha 1]	10.0 4	4.1 1	–	2.3
Ikertalde/GPS[15][50]	9–14 Feb 2015	518	68.0	20.5	21.0	19.5	14.5	–	[lower-alpha 3]	3.0	1.5	–	15.0	–	–	0.5
Ikerfel/El Correo[51]	7–13 Jan 2015	778	?	13.7 7	19.9 12	17.3 11	12.5 6	–	[lower-alpha 3]	4.7 2	4.2 0	–	20.7 12	2.2 0	–	0.8
Torrene Consulting/Gara[40][52]	13–31 Oct 2014	400	65.3	20.3 12	23.5 14	21.5 12	14.5 8	–	[lower-alpha 3]	2.7 1	2.4 0	–	8.5 4	–	–	2.0
Ikertalde/GPS[23][53]	6–13 Oct 2014	490	65.0	19.5	22.9	21.9	15.1	–	[lower-alpha 3]	2.7	1.3	2.0	9.6	–	–	1.0
Gizaker/Grupo Noticias[54][55]	12–16 Sep 2014	750	?	16.9 8	24.8 15	22.2 13	12.4 5	–	[lower-alpha 3]	3.1 1	4.0 1	–	13.6 8	–	–	2.6
2014 EP election[56]	25 May 2014	N/A	42.7	16.0	17.2	19.5	15.2	–	[lower-alpha 3]	4.5	6.3	2.9	8.9	1.1	–	2.3
Gizaker/Grupo Noticias[57]	7–10 Jan 2014	940	?	16.4 9	27.2 16	23.5 13	17.9 10	1.8 0	[lower-alpha 3]	4.2 2	3.5 1	–	–	–	–	3.7
2012 regional election	21 Oct 2012	N/A	63.6	18.7	25.5	21.7	19.3	1.6	[lower-alpha 3]	3.5	2.9	2.7	–	–	–	3.8
2011 general election	20 Nov 2011	N/A	68.7	27.2	18.8	19.1*	23.4	–	[lower-alpha 3]	2.8	4.1	2.1	–	–	–	3.8
2011 foral election	22 May 2011	N/A	63.6	26.0 16	23.7 13	21.0 11	16.3 9	4.1 2	2.7 0	1.8 0	–	–	–	–	–	2.3
(*) Results for Amaiur.

Biscay

Polling firm/Commissioner	Fieldwork date	Sample size	Turnout	PNV				EBB								Lead
2015 foral election	24 May 2015	N/A	62.6	37.6 23	18.9 11	12.5 7	8.2 4	–	[lower-alpha 3]	0.6 0	[lower-alpha 1]	[lower-alpha 1]	14.5 6	2.1 0	2.6 0	18.7
Ikerfel/El Correo[46]	29 Apr–2 May 2015	2,028	?	36.1 21	17.1 11	11.6 7	8.2 4	–	[lower-alpha 3]	0.8 0	[lower-alpha 1]	[lower-alpha 1]	14.3 8	3.2 0	4.8 0	19.0
Ikertalde/GPS[9][47]	22–29 Apr 2015	1,036	68.5	34.0	20.9	14.1	9.7	–	[lower-alpha 3]	0.4	[lower-alpha 1]	[lower-alpha 1]	12.3	3.0	1.5	13.1
Gizaker/Grupo Noticias[58]	20–23 Apr 2015	1,600	65.9	38.8 21/22	20.1 11/12	13.2 7	8.7 5	–	[lower-alpha 3]	–	[lower-alpha 1]	[lower-alpha 1]	10.4 6	3.7 0	–	18.7
Ikertalde/GPS[15][50]	9–14 Feb 2015	1,036	69.0	34.0	20.5	14.0	9.5	–	[lower-alpha 3]	1.0	2.0	–	14.5	–	–	13.5
Ikerfel/El Correo[51]	7–13 Jan 2015	1,170	?	34.3 20	13.2 8	10.9 6	8.2 4	–	[lower-alpha 3]	1.9 0	5.0 1	–	21.2 12	1.0 0	–	13.1
Gizaker/Biscay Deputation[59][60]	15–18 Dec 2014	1,600	74.4	37.8 21/22	20.3 11/12	14.4 7/8	9.8 4/5	1.2	[lower-alpha 3]	1.2 0	1.2 0	–	11.8 5/7	–	–	17.5
Torrene Consulting/Gara[19][20][21][61]	13–31 Oct 2014	400	66.6	36.8 21	21.6 12	15.1 8	7.9 3	–	[lower-alpha 3]	–	3.6 1	–	12.2 6	–	–	15.2
Ikertalde/GPS[23][53]	6–13 Oct 2014	1,106	66.0	35.9	21.6	13.8	9.4	–	[lower-alpha 3]	2.0	1.8	1.0	9.5	–	–	14.3
2014 EP election[62]	25 May 2014	N/A	44.3	31.8	19.9	13.6	10.0	–	[lower-alpha 3]	3.2	5.7	1.4	6.7	0.8	–	11.9
Gizaker/Biscay Deputation[63]	12–20 Mar 2014	1,600	?	39.8 24	22.3 13	16.6 9	10.5 5	2.6 0	[lower-alpha 3]	–	3.1 0	–	–	–	–	17.5
2012 regional election	21 Oct 2012	N/A	64.5	37.9	21.2	18.7	11.7	1.6	[lower-alpha 3]	1.8	2.7	0.8	–	–	–	16.7
2011 general election	20 Nov 2011	N/A	68.1	32.6	19.2*	21.4	17.7	–	[lower-alpha 3]	1.7	3.8	1.2	–	–	–	11.2
2011 foral election	22 May 2011	N/A	64.0	37.2 22	21.0 12	16.7 9	13.8 8	3.5 0	2.7 0	0.6 0	–	–	–	–	–	16.2
(*) Results for Amaiur.

Gipuzkoa

Polling firm/Commissioner	Fieldwork date	Sample size	Turnout		PNV				EBB							Lead
2015 foral election	24 May 2015	N/A	64.9	28.8 17	31.6 18	16.5 9	5.4 1	[lower-alpha 3]	–	0.3 0	[lower-alpha 1]	[lower-alpha 1]	12.1 6	1.5 0	2.4 0	2.8
Ikerfel/El Correo[46]	29 Apr–2 May 2015	1,958	?	32.7 19	28.6 16	12.4 7	6.4 2	[lower-alpha 3]	–	0.6 0	[lower-alpha 1]	[lower-alpha 1]	13.0 7	2.0 0	4.2 0	4.1
Ikertalde/GPS[9][47]	22–29 Apr 2015	616	68.0	31.0	26.4	15.1	8.2	[lower-alpha 3]	–	0.2	[lower-alpha 1]	[lower-alpha 1]	11.1	1.0	2.5	4.6
Gizaker/Grupo Noticias[64][65]	14–18 Apr 2015	1,500	66.2	34.5 20	31.8 20	13.8 7	5.0 1	[lower-alpha 3]	–	–	[lower-alpha 1]	[lower-alpha 1]	8.5 3	1.3 0	2.7 0	2.7
Ikertalde/GPS[15][50]	9–14 Feb 2015	588	68.0	29.5	27.5	14.0	8.5	[lower-alpha 3]	–	1.0	2.0	–	13.5	–	–	2.0
Ikerfel/El Correo[51]	7–13 Jan 2015	1,052	?	27.2 16	25.9 16	11.7 7	5.3 2	[lower-alpha 3]	–	2.4 0	4.6 0	–	19.4 10	0.7 0	–	1.3
Torrene Consulting/Gara[28][29][30][66]	13–31 Oct 2014	600	61.0	30.9 17/19	24.5 14	16.1 8/9	8.6 4	[lower-alpha 3]	–	–	1.7 0	–	13.3 6/7	–	–	6.3
Ikertalde/GPS[23][53]	6–13 Oct 2014	602	64.0	32.9	25.8	14.1	8.2	[lower-alpha 3]	–	1.5	2.0	1.0	8.5	–	–	7.1
2014 EP election[67]	25 May 2014	N/A	41.4	31.1	24.5	13.7	7.9	[lower-alpha 3]	–	3.0	5.0	1.3	6.4	0.7	–	6.6
2012 regional election	21 Oct 2012	N/A	63.3	31.8	31.6	19.0	8.4	[lower-alpha 3]	1.4	1.4	2.7	0.7	–	–	–	0.2
2011 general election	20 Nov 2011	N/A	65.5	34.8*	22.4	21.0	13.7	[lower-alpha 3]	–	1.5	3.4	1.2	–	–	–	12.4
2011 foral election	22 May 2011	N/A	62.7	34.6 22	23.5 14	17.2 10	10.0 4	5.0 1	2.6 0	0.7 0	–	–	–	–	–	11.1
(*) Results for Amaiur.

Notes

1. Within Irabazi.
2. Within UdalBerri.
3. Within EH Bildu.
4. Within Herriaren Eskubidea.
5. Within GUK.

References

1. "Encuestas. El Correo (18 de mayo 2015)". Eusko Jaurlaritza (in Spanish). 18 May 2015.
2. "Podemos desbanca a PSE y PNV y se coloca primero en Barakaldo". Barakaldo Digital (in Spanish). 28 April 2015.
3. "El PNV gana en Bilbao pero necesitará el apoyo del PSE". El Mundo (in Spanish). 16 May 2015.
4. "Intención de voto en el Ayto. de Bilbao. Gráfico". El Mundo (in Spanish). 16 May 2015.
5. "El PP depende de C's para gobernar en Madrid, Valencia, Sevilla y Málaga". Público (in Spanish). 15 May 2015.
6. "Ada Colau empata con Trias, Barberá se estrella en Valencia y Podemos tiene la llave en Sevilla". Público (in Spanish). 3 May 2015.
7. "Tracking de sondeos en las capitales: la derecha sólo puede esperar que Ciudadanos salve al PP". Público (in Spanish). 3 May 2015.
8. "PAÍS VASCO (Capitales), Mayo 2015. Sondeo Ikerfel". Electograph (in Spanish). 17 May 2015.
9. "Elecciones a Juntas Generales y Elecciones Municipales en capitales: Previsión de voto (Mayo 2015)" (PDF). Lehendakaritza (in Spanish). 8 May 2015.
10. "PAÍS VASCO (Capitales), Abril 2015. Sondeo GPS Gobierno Vasco". Electograph (in Spanish). 8 May 2015.
11. "Cuatro de cada diez bilbainos afirman que votarán a Aburto". Deia (in Spanish). 16 May 2015.
12. "BILBAO, Mayo 2015. Sondeo Gizaker". Electograph (in Spanish). 16 May 2015.
13. "El PNV repite en Bilbao; Podemos, tercera fuerza". El Mundo (in Spanish). 7 April 2015.
14. "Encuesta electoral: Ayuntamiento de Bilbao. Gráfico". El Mundo (in Spanish). 7 April 2015.
15. "Elecciones a Juntas Generales y Elecciones Municipales en capitales: Previsión de voto (Marzo 2015)" (PDF). Lehendakaritza (in Spanish). 10 March 2015.
16. "CAPITALES VASCAS, Febrero 2015. Sondeo GPS Gobierno Vasco". Electograph (in Spanish). 10 March 2015.
17. "PNV gana en Bilbao y S.Sebastián y casi iguala a PP en Vitoria, según encuesta". El Correo (in Spanish). 25 January 2015. Archived from the original on 18 May 2015.
18. "CAPITALES VASCAS, Enero 2015. Sondeo Ikerfel". Electograph (in Spanish). 25 January 2015.
19. "Bizkaia sigue siendo el fortín jeltzale pero aparecen humedades en el muro". Gara (in Spanish). 16 November 2014.
20. "Estimación votos y escaños-concejales en Bizkaia y Bilbo" (PDF). Gara (in Spanish). 16 November 2014.
21. "Valoración candidatos a la Diputación de Bizkaia y al Ayuntamiento de Bilbo" (PDF). Gara (in Spanish). 16 November 2014.
22. "BILBAO / BILBO, Octubre 2014. Torrene Consulting". Electograph (in Spanish). 16 November 2014.
23. "Elecciones a Juntas Generales y Elecciones Municipales en capitales: Previsión de voto (Noviembre 2014)" (PDF). Lehendakaritza (in Spanish). 5 November 2014.
24. "CAPITALES VASCAS, Octubre 2014. Gobierno Vasco". Electograph (in Spanish). 5 November 2014.
25. "Eneko Goia afianza su liderazgo y amplía su ventaja sobre Izagirre". Noticias de Gipuzkoa (in Spanish). 17 May 2015.
26. "Goia subiría a nueve ediles y aventajaría por la mínima a Izagirre". Noticias de Gipuzkoa (in Spanish). 26 April 2015.
27. "DONOSTIA-SAN SEBASTIÁN, Abril 2015. Sondeo Gizaker". Electograph (in Spanish). 26 April 2015.
28. "Encuesta de GARA (II): EH Bildu lidera Gipuzkoa y sube en Donostia tras la entrada de Podemos". Gara (in Spanish). 23 November 2014.
29. "Estimación votos y escaños-concejales en Gipuzkoa y Donostia" (PDF). Gara (in Spanish). 23 November 2014.
30. "Valoración candidatos a la Diputación de Gipuzkoa y al Ayuntamiento de Donostia" (PDF). Gara (in Spanish). 23 November 2014.
31. "DONOSTIA-SAN SEBASTIÁN, Noviembre 2014. Torrene Consulting". Electograph (in Spanish). 23 November 2014.
32. "SEGÚN UNA ENCUESTA MUNICIPAL. Tras 36 años de gobierno del PNV, Durango podría tener en mayo alcaldía de otras siglas". Mugalari (in Spanish). 10 March 2015.
33. "DURANGO (Bizkaia), Enero 2015. Sondeo Gizaker". Electograph (in Spanish). 10 March 2015.
34. "El PSE conserva las alcaldías de Irun y Eibar". El Diario Vasco (in Spanish). 18 May 2015.
35. "Preelectoral elecciones municipales 2015. Vitoria (Estudio nº 3062. Marzo-Abril 2015)" (PDF). CIS (in Spanish). 7 May 2015.
36. "El PP se echa a la calle para recuperar a las clases medias". La Vanguardia (in Spanish). 8 May 2015.
37. "Unos igualados Urtaran y Maroto decidirían en Gasteiz". Deia (in Spanish). 16 May 2015.
38. "VITORIA-GASTEIZ, Abril 2015. Sondeo Gizaker". Electograph (in Spanish). 19 April 2015.
39. "Tres plataformas a por el voto del desencanto en Vitoria". El Correo (in Spanish). 25 January 2015.
40. "Estimación votos y escaños-concejales en Araba y Gasteiz" (PDF). Gara (in Spanish). 30 November 2014.
41. "VITORIA-GASTEIZ, Noviembre 2014. Torrene Consulting". Electograph (in Spanish). 30 November 2014.
42. "Urtaran y Maroto empatan en dura pugna por la Alcaldía de Vitoria". Noticias de Álava (in Spanish). 21 September 2014.
43. "VITORIA-GASTEIZ, Septiembre 2014. Gizaker / Noticias de Álava". Electograph (in Spanish). 21 September 2014.
44. "Vitoria se pronuncia". Noticias de Álava (in Spanish). 30 June 2013.
45. "Encuesta de Gizaker sobre la capital alavesa" (PDF). Noticias de Álava (in Spanish). 30 June 2013.
46. "PAÍS VASCO (JJ. GG.), Mayo 2015. Sondeo Ikerfel". Electograph (in Spanish). 16 May 2015.
47. "PAÍS VASCO (JJ. GG.), Abril 2015. Sondeo GPS Gobierno Vasco". Electograph (in Spanish). 8 May 2015.
48. "El PNV aspira a recuperar la Diputación mientras el PP se hunde". Noticias de Álava (in Spanish). 25 April 2015.
49. "JJ. GG. ÁLAVA-ARABA, Abril 2015. Sondeo Gizaker". Electograph (in Spanish). 25 April 2015.
50. "JJ. GG. DEL PAÍS VASCO, Febrero 2015. Sondeo GPS Gobierno Vasco". Electograph (in Spanish). 10 March 2015.
51. "JJ. GG. DEL PAÍS VASCO, Enero 2015. Sondeo Ikerfel". Electograph (in Spanish). 24 January 2015.
52. "JJ. GG. ÁLAVA, Noviembre 2014. Torrene Consulting". Electograph (in Spanish). 30 November 2014.
53. "JJ.GG. DEL PAÍS VASCO, Octubre 2014. Gobierno Vasco". Electograph (in Spanish). 5 November 2014.
54. "El PNV vence a Bildu en Álava, con un PP en decadencia y la irrupción de Podemos". Noticias de Álava (in Spanish). 22 September 2014.
55. "ÁLAVA-ARABA, Septiembre 2014. Gizaker / Noticias de Álava". Electograph (in Spanish). 22 September 2014.
56. "Electoral Results Consultation. European Parliament. May 2014. Álava". www.infoelectoral.mir.es (in Spanish). Ministry of the Interior. Retrieved 25 June 2020.
57. "PNV y EH Bildu se perfilan mayoritarios en Araba". Noticias de Álava (in Spanish). 16 February 2014.
58. "El PNV sigue a la cabeza en una Bizkaia sin sorpresas pese a la irrupción de Podemos". Deia (in Spanish). 17 May 2015.
59. "Situación sociopolítica. Bizkaia. Diciembre 2014" (PDF). Gizaker (in Spanish). 12 January 2015.
60. "JJ. GG. VIZCAYA, Diciembre 2014. Sondeo Gizaker". Electograph (in Spanish). 10 March 2015.
61. "JJ. GG. VIZCAYA, Octubre 2014. Torrene Consulting". Electograph (in Spanish). 16 November 2014.
62. "Electoral Results Consultation. European Parliament. May 2014. Biscay". www.infoelectoral.mir.es (in Spanish). Ministry of the Interior. Retrieved 25 June 2020.
63. "Encuestas. Diputación Foral de Bizkaia (Marzo 2014)". Eusko Jaurlaritza (in Spanish). March 2014.
64. "El PNV sigue su ascenso en Gipuzkoa y empataría con un EH Bildu a la baja". Noticias de Gipuzkoa (in Spanish). 26 April 2015.
65. "JJ. GG. GIPUZKOA-GUIPÚZCOA, Abril 2015. Sondeo Gizaker". Electograph (in Spanish). 26 April 2015.
66. "JJ. GG. GIPUZKOA, Noviembre 2014. Torrene Consulting". Electograph (in Spanish). 23 November 2014.
67. "Electoral Results Consultation. European Parliament. May 2014. Gipuzkoa". www.infoelectoral.mir.es (in Spanish). Ministry of the Interior. Retrieved 25 June 2020.