Italian Democratic Socialist Party member of Party of European Socialists
History
Early years and government coalitions
The party was founded as the Socialist Party of Italian Workers (PSLI) in 1947 by a splinter group of the Italian Socialist Party (PSI) due to the decision of the latter to join the Italian Communist Party (PCI) in the Popular Democratic Front's electoral list for the 1948 Italian general election. The split, led by Giuseppe Saragat and the sons of Giacomo Matteotti, took the name ofscissione di Palazzo Barberini, from the name of a palace in Rome where it took place. On 1 May 1951, it joined forces with the smaller Unitary Socialist Party and Labour Democratic Party and took the name Socialist Party – Italian Section of the Socialist International (PS–SIIS). On 7 January 1952, the PS–SIIS was ultimately renamed Italian Democratic Socialist Party (PSDI). From 1949 to 1965, members of the PSDI held the presidency of the Istituto Nazionale di Previdenza Sociale (INPS).In 1966, the party joined the PSI to form the Unified Socialist Party. In 1969, after a disappointing result at the 1968 Italian general election, it left the new unified party, taking the name Unitary Socialist Party (PSU). It returned to the PSDI name in 1971. In 1980, the party joined Christian Democracy (DC), the PSI, the Italian Republican Party (PRI), and the Italian Liberal Party (PLI) in the five-party coalition (Pentapartito), which ruled the country until 1991, and until 1994 without the PRI. The party's role in the coalition was minimal and was over-shadowed by the more powerful PSI. The PSDI was a member of Socialist International and a founder member of the Party of European Socialists (PES). Its members of the European Parliament sat within the Socialist Group since 1979. In 1994, having grown increasingly conservative among social democratic parties, the PSDI was expelled from the PES.
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