Unified Socialist Party (Italy)

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Unified Socialist Party
Partito Socialista Unificato
Leaders Pietro Nenni
Giuseppe Saragat
Secretaries Francesco De Martino
Mario Tanassi
President Pietro Nenni
Founded 1966
Dissolved 1971
Newspaper Avanti!
Ideology Democratic socialism
Social democracy
Political position Centre-left
International affiliation Socialist International
Politics of Italy
Political parties

The Unified Socialist Party (Italian: Partito Socialista Unificato, PSU), formally the Unified PSI–PSDI (PSI–PSDI Unificati), was the name of the federation of parties formed by the Italian Socialist Party (PSI) and the Italian Democratic Socialist Party (PSDI) from 1966 to 1969.[1][2] The party's membership was composed of 700,964 activists in 1966.[3]

The two parties joined forces in 1966, after the PSI had joined the Italian government in 1963 for the first time since 1947, as part of Aldo Moro's cabinets, composed of Christian Democracy, the Italian Republican Party and the PSDI.

The united party achieved just 14.5% of the vote in the 1968 general election,[4] due to the competition of the PSI's dissindents of the Italian Socialist Party of Proletarian Unity, the PSU returned officially to the name PSI, causing the split of the PSDI's former members in July 1969: these formed the "United Socialist Party", which was finally renamed PSDI in 1971.[2]

Electoral results[edit]

Italian Parliament[edit]

Chamber of Deputies
Election year # of
overall votes
 % of
overall vote
# of
overall seats won
+/– Leader
1968 4,603,192 (#3) 14.48
91 / 630
Pietro Nenni
Senate of the Republic
Election year # of
overall votes
 % of
overall vote
# of
overall seats won
+/– Leader
1968 4,354,906 (#3) 15.22
46 / 315
Pietro Nenni


  1. ^ Mark F. Gilbert; K. Robert Nilsson; Robert K. Nilsson (1 April 2010). The A to Z of Modern Italy. Rowman & Littlefield. p. 333. ISBN 978-0-8108-7210-3. 
  2. ^ a b André Krouwel (20 November 2012). Party Transformations in European Democracies. SUNY Press. p. 327. ISBN 978-1-4384-4483-3. 
  3. ^ http://www.cattaneo.org/archivi/adele/iscritti.xls
  4. ^ Ram Mudambi; Pietro Navarra; Giuseppe Sobbrio (1 January 2001). Rules, Choice and Strategy: The Political Economy of Italian Electoral Reform. Edward Elgar Publishing. p. 39. ISBN 978-1-78195-082-1.