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 in Cantabria 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 Camargo Polling firm/Commissioner Fieldwork date Sample size Turnout PRC Lead 2019 municipal election 26 May 2019 68.8 26.9 31.2 15.7 5.0 2.8 11.6 4.3 Cantabria24Horas 11 Nov 2018???????? Tie 2015 municipal election 24 May 2015 68.9 41.1 23.7 15.2 7.9 6.2 – 17.4

Castro Urdiales Polling firm/Commissioner Fieldwork date Sample size Turnout PRC MC–AAC Lead 2019 municipal election 26 May 2019 64.0 14.8 12.5 23.9 26.1 – 6.5 7.7 3.3 2.2 MuchoCastro 17–19 May 2019 520????? –???? MuchoCastro 18–29 Dec 2018 698????? –???? MuchoCastro 25 May–3 Jun 2018 495? 19.9 23.9 12.2 18.4 – 9.0 5.7 – 4.0 MuchoCastro 6–12 Dec 2017 676? 18.2 25.9 13.8 22.5 – 12.7 – – 3.4 2015 municipal election 24 May 2015 61.8 29.7 19.4 18.7 15.5 5.8 – – – 10.3

El Astillero Polling firm/Commissioner Fieldwork date Sample size Turnout PRC Lead 2019 municipal election 26 May 2019 68.8 14.2 19.1 22.5 5.3 26.7 4.2 Cantabria24Horas 11 Nov 2018???????? 2015 municipal election 24 May 2015 69.0 33.6 24.1 24.0 12.5 – 9.5

Piélagos Polling firm/Commissioner Fieldwork date Sample size Turnout PRC AVIP Lead 2019 municipal election 26 May 2019 69.7 35.8 12.5 7.5 25.8 6.5 3.6 10.0 Cantabria24Horas 11 Nov 2018???????? Tie 2015 municipal election 24 May 2015 68.5 34.4 16.0 14.8 14.1 9.4 7.3 18.4

Santander Polling firm/Commissioner Fieldwork date Sample size Turnout PRC Lead 2019 municipal election 26 May 2019 64.7 35.3 23.4 19.1 8.8 5.3 6.1 11.9 Sigma Dos/El Diario Montañés 6–8 May 2019 400? 29.8 24.2 15.8 12.6 4.5 8.9 5.6 Sigma Dos/PP 2 Dec 2018?? 35.0 22.3 12.1 13.1 – 11.8 12.7 2015 municipal election 24 May 2015 64.3 40.8 17.6 15.4 8.3 6.8 5.5 0.7 – 23.2

Torrelavega Polling firm/Commissioner Fieldwork date Sample size Turnout PRC TSí ACPT Lead 2019 municipal election 26 May 2019 68.8 15.9 26.4 26.8 6.2 8.6 6.3 4.6 3.5 0.4 Sigma Dos/El Diario Montañés 6–8 May 2019?? 17.9 29.6 19.1 5.1 7.1 6.1 5.5 7.4 10.5 2015 municipal election 24 May 2015 69.7 24.5 20.0 17.7 12.6 8.1 5.4 4.6 – – 4.5

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