The term of the Cortes of Aragon expires four years after the date of its previous election, unless it is dissolved earlier. The election decree shall be issued no later than 25 days before the scheduled expiration date of parliament and published on the following day in the Official Gazette of Aragon (BOA), with election day taking place 54 days after the decree's publication.[6] The previous election was held on 8 February 2026, which means that the chamber's term will expire on 8 February 2030. The election decree shall be published in the BOA no later than 15 January 2030, setting the latest possible date for election day on 10 March 2030.[1][2]
The regional president has the prerogative to dissolve the Cortes of Aragon at any given time and call a snap election, provided that no motion of no confidence is in process and that dissolution does not occur before one year after a previous one.[7] In the event of an investiture process failing to elect a regional president within a two-month period from the Cortes's reconvening, the chamber is to be automatically dissolved and a fresh election called.[8]
The 2026 snap election saw the People's Party (PP) of incumbent president Jorge Azcón falling well short of an overall majority in parliament, requiring the support of the far-rightVox party to retain power.[9] As a result, Spanish media commented on the possibility of a repeat election in the event of a failure in the government formation process.[10][11] The likelihood for a repeat election to take place on 28 June 2026 rose for a few weeks before a deal was finally reached that allowed Azcón to be re-elected as regional president on 29 April.[12][13]
The Cortes of Aragon has a minimum of 65 and a maximum of 80 seats, with electoral provisions fixing its size at 67. All are elected in three multi-member constituencies—corresponding to the provinces of Huesca, Teruel and Zaragoza, each of which is assigned an initial minimum of 14 seats and the remaining 25 distributed in proportion to population (with the seat-to-population ratio in the most populated province not exceeding three 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.[15] The use of this electoral method may result in a higher effective threshold depending on district magnitude and vote distribution.[16]
As a result of the aforementioned allocation, each Cortes constituency would be entitled the following seats (as of 11 December 2025):[a]
The law does not provide for by-elections to fill vacant seats; instead, any vacancies arising after the proclamation of candidates and during the legislative term will be filled by the next candidates on the party lists or, when required, by designated substitutes.[18]
The electoral law allows 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 are required to inform the relevant electoral commission within 10 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.[21] Additionally, a balanced composition of men and women was required in the electoral lists through the use of a zipper system.[22]
Below is a list of the main parties and alliances which will likely contest the election:
The table below lists 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 are required for an absolute majority in the Cortes of Aragon.
↑This seat allocation has been manually calculated by applying the electoral rules set out in the law, on the basis of the latest official population figures provided by the Spanish government as of 2026. As such, it should be deemed as a provisional, non-binding estimation. The definitive allocation will be determined by the election decree at the time of the parliament's dissolution.[17]
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