1991 Extremaduran regional election

The Assembly of Extremadura was the devolved, unicameral legislature of the autonomous community of Extremadura, having legislative power in regional matters as defined by the Spanish Constitution and the Extremaduran Statute of Autonomy, as well as the ability to vote confidence in or withdraw it from a regional president.[1]

Voting for the Assembly was on the basis of universal suffrage, which comprised all nationals over 18 years of age, registered in Extremadura and in full enjoyment of their political rights. The 65 members of the Assembly of Extremadura 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 in each constituency. Alternatively, parties failing to reach the threshold in one of the constituencies were also entitled to enter the seat distribution as long as they ran candidates in both districts and reached five percent regionally. Seats were allocated to constituencies, corresponding to the provinces of Badajoz and Cáceres, with each being allocated an initial minimum of 20 seats and the remaining 25 being distributed in proportion to their populations.[1][2]

The electoral law provided that parties, federations, coalitions and groupings of electors were allowed to present lists of candidates. However, groupings of electors were required to secure the signature of at least 2 percent of the electors registered in the constituency for which they sought election. Electors were barred from signing for more than one list of candidates. 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.[2][3]

The term of the Assembly of Extremadura expired four years after the date of its previous election. Legal amendments earlier in 1991 established that elections to the Assembly were to be fixed for the fourth Sunday of May every four years. The previous election was held on 10 June 1987, setting the election date for the Assembly on Sunday, 26 May 1991.[1][2][3]

The Assembly of Extremadura 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. In such a case, the Assembly was to be automatically dissolved and a snap election called, with elected deputies merely serving out what remained of their four-year terms.[1][4]