[2] Voting for the Cortes was on the basis of universal suffrage, which comprised all nationals over 18 years of age, registered in Aragon and in full enjoyment of their political rights.

[3] The expat vote system was attributed responsibility for a major decrease in the turnout of Spaniards abroad during the years it had been in force.

[4] The 67 members of the Cortes of Aragon were elected using the D'Hondt method and a closed list proportional representation, with an electoral threshold of three percent of valid votes—which included blank ballots—being applied in each constituency.

[2][5][8] The president had the prerogative to dissolve the Cortes of Aragon and call a snap election, provided that no motion of no confidence was in process and that dissolution did not occur before one year had elapsed since the previous one.

[2] In November 2021, following emerging speculation on possible snap elections in Andalusia and Castile and León to be called by the spring of 2022,[9] as well as a similar move in the Valencian Community being considered by Valencian president Ximo Puig,[10] it transpired that Lambán had been evaluating the opportunity of a simultaneous early election in Aragon in order to catch the regional People's Party (PP) leaderless and off-guard and to benefit from an improving economic situation.

[12] The Cortes of Aragon were officially dissolved on 4 April 2023 after the publication of the dissolution decree in the BOA, setting the election date for 28 May and scheduling for the chamber to reconvene on 23 June.

[5][8] Below is a list of the main parties and electoral alliances which contested the election: In September 2021, citizen collectives of the so-called "Empty Spain" (Spanish: España Vacía or España Vaciada), a coined term to refer to Spain's rural and largely unpopulated interior provinces,[31] agreed to look forward for formulas to contest the next elections in Spain, inspired by the success of the Teruel Existe candidacy (Spanish for "Teruel Exists") in the November 2019 Spanish general election.

The highest percentage figure in each polling survey is displayed with its background shaded in the leading party's colour.