The mayor was in turn elected by the plenary assembly, with a legal clause providing for the candidate of the most-voted party to be automatically elected to the post in the event no other candidate was to gather an absolute majority of votes.

Councillors were allocated to municipal councils based on the following scale: Councillors of municipalities with populations between 25 and 250 inhabitants were elected under an open list partial block voting, with electors voting for individual candidates instead of parties and for up to four candidates.

Additionally, municipalities below 25 inhabitants, as well as those having traditionally adopted it, were to be organized through the open council system (Spanish: régimen de concejo abierto), in which electors would directly vote for the local major.

[5] Concurrently, parties and federations intending to enter in coalition to take part jointly at an election were required to inform the relevant Electoral Commission within ten days of the election being called.

Most deputations were indirectly elected by local councillors from municipalities in each judicial district.