2023 Madrilenian regional election

A regional election was held in the Community of Madrid on 28 May 2023 to elect the 13th Assembly of the autonomous community. All 135 seats in the Assembly were up for election. Because regional elections in Madrid were mandated for the fourth Sunday of May every four years, the 2021 snap election did not alter the term of the four-year legislature starting in 2019. It was held concurrently with regional elections in eleven other autonomous communities and local elections all across Spain.

Under the 1983 Statute of Autonomy, the Assembly of Madrid was the unicameral legislature of the homonymous autonomous community, having legislative power in devolved matters, as well as the ability to grant or withdraw confidence from a regional president. The electoral and procedural rules were supplemented by national law provisions.

The term of the Assembly of Madrid expired four years after the date of its previous ordinary election, with election day being fixed for the fourth Sunday of May every four years. The election decree was required to be issued no later than 54 days before the scheduled election date and published on the following day in the Official Gazette of the Community of Madrid (BOCM). The previous ordinary election was held on 26 May 2019, setting the date for election day on the fourth Sunday of May four years later, which was 28 May 2023.

The regional president had the prerogative to dissolve the Assembly of Madrid at any given time and call a snap election, provided that no motion of no confidence was in process, no nationwide election had been called and that dissolution did not occur either during the first legislative session or during the last year of parliament before its planned expiration, nor before one year after a previous one. In the event of an investiture process failing to elect a regional president within a two-month period from the first ballot, the Assembly was to be automatically dissolved and a fresh election called, which was to be held on the first Sunday 54 days after the call. Any snap election held as a result of these circumstances did not alter the date of the chamber's next ordinary election, with elected lawmakers serving the remainder of its original four-year term.

The election to the Assembly of Madrid was officially called on 4 April 2023 with the publication of the corresponding decree in the BOCM, setting election day for 28 May and scheduling for the chamber to reconvene on 13 June.

Voting for the Assembly was based on universal suffrage, comprising all Spanish nationals over 18 years of age, registered in the Community of Madrid and with full political rights, provided that they had not been deprived of the right to vote by a final sentence. Amendments in 2022 abolished the "begged" voting system (Spanish: Voto rogado), under which non-resident citizens were required to apply for voting. The begged vote system was attributed responsibility for a major decrease in the turnout of Spaniards abroad during the years it was in force.

The Assembly of Madrid had one seat per 50,000 inhabitants or fraction above 25,000. All were elected in a single multi-member constituency—corresponding to the autonomous community's territory—using the D'Hondt method and closed-list proportional voting, with a five percent-threshold of valid votes (including blank ballots) regionally. As a result of the aforementioned allocation, the Assembly was entitled to 135 seats, based on the official population figures resulting from the latest revision of the municipal register (as of 1 January 2022).

The law did not provide for by-elections to fill vacant seats; instead, any vacancies arising after the proclamation of candidates and during the legislative term were filled by the next candidates on the party lists or, when required, by designated substitutes.

The table below shows the composition of the parliamentary groups in the chamber at the time of the election call.

The electoral law allowed for parties and federations registered in the interior ministry, alliances and groupings of electors to present lists of candidates. Parties and federations intending to form an alliance were required to inform the relevant electoral commission within 10 days of the election call, whereas groupings of electors needed to secure the signature of at least 0.5 percent of the electorate in the Community of Madrid, disallowing electors from signing for more than one list. Additionally, a balanced composition of men and women was required in the electoral lists, so that candidates of either sex made up at least 40 percent of the total composition.

Below is a list of the main parties and alliances which contested the election:

The tables below list opinion polling results in reverse chronological order, showing the most recent first and using the dates when the survey fieldwork was done, as opposed to the date of publication. Where the fieldwork dates are unknown, the date of publication is given instead. The highest percentage figure in each polling survey is displayed with its background shaded in the leading party's colour. If a tie ensues, this is applied to the figures with the highest percentages. 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 weighted voting intention estimates. Refusals are generally excluded from the party vote percentages, while question wording and the treatment of "don't know" responses and those not intending to vote may vary between polling organisations. When available, seat projections determined by the polling organisations are displayed below (or in place of) the percentages in a smaller font; 68 seats were required for an absolute majority in the Assembly of Madrid (69 in the 2021 election).

Color key:

The table below lists raw, unweighted voting preferences.

The table below lists opinion polling on leader preferences to become president of the Community of Madrid.

Opinion poll sources

Other