In the run up to the next Spanish general election, various organisations carry out opinion polling to gauge voting intention in Spain. Results of such polls are displayed in this article.
The date range for these opinion polls are from the previous general election, held on 26 June 2016, to the present day. The next general election is scheduled to be held on 26 July 2020 at the latest, though it may be held earlier if a snap election is called.
Individual polls
Individual poll results are listed in the table below in reverse chronological order, showing the most recent first, and using the date the survey's fieldwork was done, as opposed to the date of publication. If such date is 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. In the instance of a tie, the figures with the highest percentages are shaded. Seat projections are displayed in bold and in a different font. The lead column on the right shows the percentage-point difference between the two parties with the highest figures. 176 seats are required for an absolute majority in the Congress of Deputies.