Socialist Party of the Islands of the Valencian Country (PSPV), part of the Socialist Coordination of the Catalan Countries. Ahead of the 1977 general election, PSI created an alliance together with MSM and MSEF, joining the People's Socialist Party (PSP) in the Socialist Unity (US) coalition. US did not gain any seat in the Congress nor in the Senate in the Balearic Islands constituency. After the election, PSI refused to merge with the Balearic federation of the Spanish Socialist Workers' Party, and instead founded the Socialist Party of Majorca (PSM). Socialist Party of the Islands Socialist Party of the Islands (Catalan: "Partit Socialista de les
Ibiza (Parliament of the Balearic Islands constituency) with Ibiza counting for 12 out of 13 seats of the Council—11 out of 12 from 1983 to 1987—. From the 2007 election onwards, a separate election is held, also having both Ibiza and Formentera independent Councils, the Ibiza Island Council electing 13 members. Additionally, on 3 April 1979 the first independent election for the Ibiza and Formentera Island Council was held, electing 12 councillors, 11 of them from Ibiza. The constituency was created as per the Statute of Autonomy of the Balearic Islands of 1983 and was first contested in the 1983 regional election. The Statute provided for the