A regional election was held in Aragon on 10 June 1987 to elect the 2nd of the autonomous community. All 67 seats in the were up for election. It was held concurrently with regional elections in twelve other autonomous communities and local elections all across Spain, as well as the 1987 European Parliament election.

Affected by their national trends, the Spanish Socialist Workers' Party (PSOE) and the People's Alliance (AP) lost support compared to the previous election, falling from 46.8% and 22.6% to 35.7% and 15.5%, and from 33 and 18 seats to 27 and 13, respectively. The latter had suffered from an internal crisis and the breakup of the People's Coalition in 1986, losing 30% of its 1983 vote and finishing third as a result, with the Regionalist Aragonese Party (PAR) scoring a strong second place with 28.1% and 19 seats. The centrist Democratic and Social Centre (CDS), a party led by the former Spanish prime minister Adolfo Suarez, saw sizeable gains and achieved a kingmaker position with 10.2% and 6 seats. United Left (IU) made a small advance of 0.9 percentage points and 1 seat, but was not able to capitalize on the PSOE's losses.

The two main centre-right parties, the PAR and AP, were able to muster 32 seats in the Cortes compared to the PSOE's 27. As a result, PAR leader Hipólito Gómez de las Roces was elected as new president of Aragon, replacing Santiago Marraco at the helm of a minority administration with AP's support and the CDS's abstention. In March 1989, AP, now refounded as the People's Party (PP), entered the government and formed a coalition with the PAR for the remainder of the legislature.

Overview Under the 1982 Statute of Autonomy, the Cortes of Aragon was the unicameral legislature of the homonymous autonomous community, having legislative power in devolved matters, as well as the ability to grant or withdraw confidence from a regional president.. The electoral and procedural rules were supplemented by national law provisions..

Date The term of the of Aragon expired four years after the date of its previous ordinary election. The election decree was required to 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 between 54 and 60 days after the decree's publication.; ( by ). The previous election was held on 8 May 1983, which meant that the chamber's term would have expired on 8 May 1987. The election decree was required to be published in the BOA no later than 14 April 1987, setting the latest possible date for election day on 13 June 1987.

The 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 '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..

The election to the of Aragon was officially called on 14 April 1987 with the publication of the corresponding decree in the BOA, setting election day for 10 June..

Electoral system Voting for the was based on universal suffrage, comprising all Spanish nationals over 18 years of age, registered in Aragon and with full political rights, provided that they had not been deprived of the right to vote by a final sentence, nor were legally incapacitated.; ( by ).

The of Aragon had a minimum of 60 and a maximum of 75 seats, with electoral provisions 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-list proportional voting, with a three percent-threshold of valid votes (including blank ballots) in each constituency.; . The use of this electoral method resulted in a higher effective threshold depending on district magnitude and vote distribution.

As a result of the aforementioned allocation, each constituency was entitled the following seats:.

Seats Constituencies 33 Zaragoza 18 Huesca 16 Teruel

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. ( by ).

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. ( by ).

Below is a list of the main parties and alliances which contested the election:

Candidacy Parties andalliances Leading candidate Ideology Previous result Vote % Seats PSOE Santiago Marraco Social democracy 46.8% AP Ángel Cristóbal Montes ConservatismNational conservatism 22.6% PDP Mariano Alierta Christian democracy PAR Hipólito Gómez de las Roces RegionalismCentrism 20.5% CAA–IU Antonio de las Casas SocialismCommunism 4.0% CDS José Luis Merino CentrismLiberalism 3.3%

Opinion polls 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.

Polling firm/Commissioner Fieldwork date Sample size Turnout Lead 1987 regional election 10 Jun 1987 69.7 35.7 – 28.1 4.9 10.2 15.5 1.2 7.6 Demoscopia/El País 22–26 May 1987? 64 28.5 – 32.7 4.7 11.7 15.5 1.9 4.2 1986 general election 22 Jun 1986 70.6 43.4 26.1 11.0 3.4 11.2 17.3 1983 regional election 8 May 1983 66.7 46.8 22.6 20.5 4.0 3.3 24.2

Voting preferences The table below lists raw, unweighted voting preferences.

Polling firm/Commissioner Fieldwork date Sample size Lead 1987 regional election 10 Jun 1987 24.6 – 19.4 3.4 7.0 10.7 0.8 30.3 5.2 CIS 2–5 Jun 1987 1,601 22.1 – 15.5 3.4 8.0 9.2 0.2 33.8 5.8 6.6 CIS 8–16 May 1987 2,408 25.7 – 9.8 2.3 4.8 7.1 0.1 42.6 6.2 15.9 CIS 14–23 Apr 1987 2,399 26.0 – 9.0 2.0 5.0 9.0 0.0 39.0 7.0 17.0 CIS 14–23 Mar 1987 1,899 28.0 – 11.0 4.0 5.0 6.0 0.0 40.0 6.0 17.0 CIS 1 Dec 1986 1,596 31.5 – 12.0 2.8 5.3 7.6 0.2 29.9 9.0 19.5 1986 general election 22 Jun 1986 30.1 18.2 7.7 2.3 7.8 29.1 11.9 CIS 1–16 Jun 1986 1,500 29.9 5.2 17.5 2.2 5.1 29.6 6.7 12.4 CIS 31 Jan–14 Feb 1986 1,500 32.9 25.8 2.5 3.1 27.8 6.3 7.1 27.2 12.1 9.5 2.2 1.9 38.4 7.5 15.1 CIS 1 Oct 1985 1,920 31.3 7.0 6.5 2.3 2.8 38.4 8.2 24.3 CIS 1 Feb 1985 1,497 30.9 12.6 9.1 2.0 2.4 28.4 10.2 18.3 1983 regional election 8 May 1983 30.8 14.9 13.5 2.6 2.2 33.3 15.9

Victory preferences The table below lists opinion polling on the victory preferences for each party in the event of a regional election taking place.

Polling firm/Commissioner Fieldwork date Sample size Other/None Lead CIS 2–5 Jun 1987 1,601 28.3 19.4 4.1 10.3 11.1 0.2 2.4 24.3 8.9 CIS 8–16 May 1987 2,408 34.6 13.0 2.9 7.1 9.1 0.1 1.1 32.1 21.6 CIS 14–23 Apr 1987 2,399 31.0 13.0 3.0 7.0 10.0 0.0 1.0 34.0 18.0 CIS 14–23 Mar 1987 1,899 32.0 14.0 4.0 8.0 8.0 0.0 1.0 33.0 18.0

Victory likelihood The table below lists opinion polling on the perceived likelihood of victory for each party in the event of a regional election taking place.

Polling firm/Commissioner Fieldwork date Sample size Other/None Lead CIS 2–5 Jun 1987 1,601 45.9 5.8 0.1 2.8 3.0 0.0 0.0 42.3 40.1 CIS 8–16 May 1987 2,408 51.4 2.6 0.5 1.2 2.9 0.1 0.1 41.2 48.5 CIS 14–23 Apr 1987 2,399 48.0 4.0 0.0 2.0 4.0 0.0 0.0 42.0 44.0 CIS 14–23 Mar 1987 1,899 49.0 3.0 0.0 2.0 2.0 0.0 0.0 43.0 46.0

Preferred President The table below lists opinion polling on leader preferences to become president of the Government of Aragon.

Polling firm/Commissioner Fieldwork date Sample size Other/None/Notcare Lead CIS 2–5 Jun 1987 1,601 23.8 – – – 3.4 18.3 – 3.0 5.6 1.5 13.1 31.3 5.5 CIS 8–16 May 1987 2,408 29.4 – – – 0.9 11.9 – 2.2 2.6 1.1 19.0 33.1 17.5 CIS 14–23 Apr 1987 2,399 26.0 – – 1.0 – 14.0 – 2.0 3.0 2.0 20.0 32.0 12.0 CIS 14–23 Mar 1987 1,899 24.0 1.0 1.0 – – 13.0 4.0 2.0 1.0 – 24.0 29.0 11.0 CIS 1 Dec 1986 1,596 34.2 – – 1.0 – 10.9 – 1.3 1.3 – 13.7 37.6 23.3

Results Overall + ← Summary of the 10 June 1987 Cortes of Aragon election results → Parties and alliances Popular vote Seats Votes % ±pp Total +/− Spanish Socialist Workers' Party (PSOE) 228,170 35.68 −11.15 27 −6 Regionalist Aragonese Party (PAR) 179,922 28.14 +7.63 19 +6 People's Alliance (AP)1 99,082 15.49 n/a 13 ±0 Democratic and Social Centre (CDS) 65,406 10.23 +6.94 6 +5 Aragon Alternative Convergence–United Left (CAA–IU)2 31,352 4.90 +0.94 2 +1 Workers' Party of Spain–Communist Unity (PTE–UC) 8,435 1.32 New 0 ±0 People's Democratic Party–Centrists of Aragon (PDP)1 7,887 1.23 n/a 0 −5 Aragonese Union (UA/CHA) 6,154 0.96 New 0 ±0 Humanist Platform (PH) 2,439 0.38 New 0 ±0 Republican Popular Unity (UPR) 1,435 0.22 New 0 ±0 Blank ballots 9,186 1.44 +0.79 Total 639,468 67 +1 Valid votes 639,468 98.80 +0.22 Invalid votes 7,789 1.20 −0.22 Votes cast / turnout 647,257 69.70 +2.96 Abstentions 281,327 30.30 −2.96 Registered voters 928,584 Sources

Distribution by constituency Constituency PSOE PAR AP CDS CAA–IU % S % S % S % S % S Huesca 36.1 7 25.2 5 15.2 3 11.9 2 5.2 1 Teruel 35.8 7 17.7 3 27.3 5 10.2 1 2.9 − Zaragoza 35.5 13 30.9 11 13.3 5 9.8 3 5.2 1 Total 35.7 27 28.1 19 15.5 13 10.2 6 4.9 2 Sources

Aftermath Government formation Investiture Ballot → 21 July 1987 23 July 1987 Required majority → 34 out of 67 Simple Absentees Sources

Notes

References Opinion poll sources

Other

Bibliography