The People's Alliance (AP) of newly elected AP Madrid leader Alberto Ruiz-Gallardón remained static, maintaining its position as the second largest party, while United Left (IU), a coalition of the Communist Party of Spain and other left-wing political forces, slipped to fourth place.

In the aftermath of the election, the CDS chose to abstain in the investiture voting in order to allow the PSOE to continue to govern in minority.

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

All members of the Assembly of Madrid 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 regionally.

[1][2][3][4] The Assembly of Madrid could not be dissolved before the date of expiry of parliament except in the event of an investiture process failing to elect a regional President within a two-month period from the first ballot.

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

[7] Investiture processes to elect the President of the Community of Madrid required for an absolute majority—more than half the votes cast—to be obtained in the first ballot.