Alberto Ruiz-Gallardón's People's Party (PP) went on to win the largest victory achieved by a candidate in a municipal election in Madrid to date, with over 55% of the votes and nearly 60% of the seats.

The Spanish Socialist Workers' Party (PSOE) plummeted barely above 1995 levels, while United Left (IU) recovered from its negative result in 2003 and gained support for the first time since 1995.

[2] Voting for the local assembly was on the basis of universal suffrage, which comprised all nationals over 18 years of age, registered in the municipality of Madrid and in full enjoyment of their political rights, as well as resident non-national European citizens and those whose country of origin allowed Spanish nationals to vote in their own elections by virtue of a treaty.

[1][2] Councillors were allocated to municipal councils based on the following scale: The mayor was indirectly elected by the plenary assembly.

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