The new legislature elected Emilio Eiroa of the PAR as the new President of Aragon by 34 votes to 33, after Hipólito Gómez de las Roces' refusal to reach a new agreement with the PP.[1] All PAR and PP deputies supported Eiroa's election while the PSOE and IU deputies voted against. The tight arithmetic in the new legislature was further complicated in November 1992 when a PP deputy, Emilio Gomáriz, resigned from the PP, leaving him holding the balance of power between the PP-PAR bloc and the PSOE-IU bloc. In September 1993 the PSOE introduced a no-confidence motion against President Eiroa. In the subsequent vote Gomáriz appeared visibly nervous and claimed that he had received death threats against his children. He voted with the PSOE and IU deputies for Socialist José Marco as new President.
The term of the Cortes of Aragon expired four years after the date of its previous ordinary election, with amendments earlier in 1991 fixingelection day for the fourth Sunday of May every four years. The election decree was required to be issued between 54 and 60 days before the scheduled election date and published on the following day in the Official Gazette of Aragon (BOA).[4] The previous election was held on 10 June 1987, setting the date for election day on the fourth Sunday of May four years later, which was 26 May 1991.
The Cortes of Aragon could not be dissolved before the expiration date of parliament, except in the event of an investiture process failing to elect a regional president within a two-month period from the Cortes's reconvening. In such a case, the chamber was to be automatically dissolved and a snap election called, with elected lawmakers serving the remainder of its original four-year term.[5]
The election to the Cortes of Aragon was officially called on 2 April 1991 with the publication of the corresponding decree in the BOA, setting election day for 26 May.[6]
The Cortes of Aragon had a minimum of 60 and a maximum of 75 seats, with the electoral law fixing its size at 67. All were elected in three multi-member constituencies—corresponding to the provinces of Huesca, Teruel and Zaragoza, each of which was assigned an initial minimum of 13 seats and the remaining 28 distributed in proportion to population (with the seat-to-population ratio in the most populated province not exceeding 2.75 times that of the least populated one)—using the D'Hondt method and closed-listproportional voting, with a three percent-threshold of valid votes (including blank ballots) in each constituency.[8] The use of this electoral method resulted in a higher effective threshold depending on district magnitude and vote distribution.[9]
As a result of the aforementioned allocation, each Cortes constituency was entitled the following seats:[10]
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.[11]
Parties and candidates
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 one percent of the electorate in the constituencies for which they sought election, disallowing electors from signing for more than one list.[12]
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.
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; 34 seats were required for an absolute majority in the Cortes of Aragon.
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3.3%
5.3 pp 
