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" column on the right shows the percentage-point difference between the parties with the highest percentages in a poll.
The table below lists opinion polling on the victory preferences for each party in the event of a general election taking place.
The table below lists opinion polling on the perceived likelihood of victory for each party in the event of a general election taking place.