In the run up to the next Spanish general election, various organisations carry out opinion polling to gauge voting intention in autonomous communities and constituencies in Spain during the term of the 15th Cortes Generales.
The date range for these opinion polls is from the previous general election, held on 23 July 2023, to the present day.
Voting intention estimates refer mainly to a hypothetical Congress of Deputies election.
The highest percentage figure in each polling survey is displayed with its background shaded in the leading party's colour.
The "Lead" columns on the right shows the percentage-point difference between the parties with the highest percentages in a given poll.