[1] Voting for the Parliament was on the basis of universal suffrage, which comprised all nationals over 18 years of age, registered in Galicia and in full enjoyment of their political rights.

The 75 members of the Parliament of Galicia were elected using the D'Hondt method and a closed list proportional representation, with an electoral threshold of five percent of valid votes—which included blank ballots—being applied in each constituency.

[1][2] The president had the prerogative to dissolve the Parliament of Galicia and call a snap election, provided that it did not occur before one year had elapsed since a previous dissolution under this procedure.

The highest percentage figure in each polling survey is displayed with its background shaded in the leading party's colour.

The table below lists opinion polling on the victory preferences for each party in the event of a regional election taking place.

The table below lists opinion polling on the perceived likelihood of victory for each party in the event of a regional election taking place.