2023 Melilla Assembly election

The 2023 Melilla Assembly election was held on Sunday, 28 May 2023, to elect the 8th Assembly of the autonomous city of Melilla. All 25 seats in the Assembly were up for election. The election was held simultaneously with regional elections in twelve autonomous communities and local elections all throughout Spain.

Electoral system
The Assembly of Melilla was the top-tier administrative and governing body of the autonomous city of Melilla. Voting for the Assembly was on the basis of universal suffrage, which comprised all nationals over eighteen, registered and residing in the municipality of Melilla 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.

The 25 members of the Assembly of Melilla were elected using the D'Hondt method and a closed list proportional representation, with a threshold of five percent of valid votes—which included blank ballots—being applied.

The Mayor-President was indirectly elected by the plenary assembly. A legal clause required that mayoral candidates earned the vote of an absolute majority of councillors, or else the candidate of the most-voted party in the assembly was to be automatically appointed to the post. In the event of a tie, the appointee would be determined by lot.

The electoral law provides that parties, federations, coalitions and groupings of electors are allowed to present lists of candidates. However, groupings of electors are required to secure the signature of a determined amount of the electors registered in Melilla. Concurrently, parties and federations intending to enter in coalition to take part jointly at an election are required to inform the relevant Electoral Commission within ten days of the election being called.

Parties and candidates
The electoral law allows for parties and federations registered in the interior ministry, coalitions and groupings of electors to present lists of candidates. Parties and federations intending to form a coalition ahead of an election are required to inform the relevant Electoral Commission within ten days of the election call, whereas groupings of electors need to secure the signature of at least one percent of the electorate in the constituencies for which they seek election, disallowing electors from signing for more than one list of candidates.

Below is a list of the main parties and electoral alliances which will likely contest the election:

Opinion polls
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.

Voting intention estimates
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; 13 seats were required for an absolute majority in the Assembly of Melilla.