Italian Socialist Party of Proletarian Unity

The Italian Socialist Party of Proletarian Unity (Partito Socialista Italiano di Unità Proletaria, PSIUP) was a political party in Italy, active from 1964 to 1972.

History

The PSIUP was formed on 12 January 1964 by a leftist section of the Italian Socialist Party (PSI).^[1] PSIUP had been the PSI's name in 1943–1947. The new PSIUP was led by Tullio Vecchietti. Other leading members were Lelio Basso, Vittorio Foa, Lucio Libertini, Emilio Lussu, Francesco Cacciatore detto Cecchino and Dario Valori. The new party attracted PSI militants who were dissatisfied with the close cooperation between the PSI and the Christian Democracy.^[2] Instead, the founders of the PSIUP favoured cooperation with the Italian Communist Party (PCI).

On 13 July 1972, following a disappointing electoral result, the PSIUP split. The majority, led by Libertini, Valori and Vecchietti, joined the PCI. The rightist minority, led by Giuseppe Avolio, Nicola Corretto and Vincenzo Gatto, rejoined the PSI. The leftist minority, led by Foa and Silvano Miniati, continued to work under the name PSIUP, and in December 1972 they established the Proletarian Unity Party (PdUP). A Posadist faction within the PSIUP published the Bollettino della sinistra rivoluzionaria del PSIUP between 1965 and 1967.

Electoral results

Italian Parliament

Chamber of Deputies
Election year	Votes	%	Seats	+/−	Leader
1968	1,414,697 (5th)	4.5	23 / 630	–	Tullio Vecchietti
1972	648,591 (8th)	1.9	0 / 630	23	Tullio Vecchietti

Senate of the Republic
Election year	Votes	%	Seats	+/−	Leader
1968	into PCI	–	13 / 315	–	Tullio Vecchietti
1972	into PCI	–	11 / 315	2	Tullio Vecchietti

Secretaries

• Tullio Vecchietti (January 1964 – September 1971)
• Dario Valori (October 1971 – July 1972)

See also

• Giuseppe Impastato, anti-mafia journalist member of the party, assassinated on 9 May 1978

References

External links

• Lelio Basso, The Italian Left, "Socialist Register", 1966.

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Historical political parties in Italy

Communist

• Proletarian Unity Party (1972–1984)
• Italian Communist Party (1921–1991)
• Proletarian Democracy (1978–1991)
• Party of Italian Communists (1998–2014)

Democratic socialist

• Italian Revolutionary Socialist Party (1881–1893)
• Italian Workers' Party (1882–1892)
• Italian Socialist Party of Proletarian Unity (1964–1972)
• Democratic Party of the Left (1991–1998)
• Democratic Left (2007–2010)
• Left Ecology Freedom (2010-2016)

Social-democratic

• Italian Reformist Socialist Party (1912–1926)
• Unitary Socialist Party (1922–1930)
• Action Party (1929–1947)
• Unitary Socialist Party (1949–1951)
• Unified Socialist Party (1966–1969)
• Italian Socialist Party (1892–1994)
• Italian Democratic Socialist Party (1947–1998)
• Democrats of the Left (1998–2007)
• Italian Democratic Socialists (1998–2007)
• Article One (2017–2023)

Green

• Rainbow Greens (1989–1990)
• Federation of Green Lists (1986–1990)
• Federation of the Greens (1990–2021)

Radical and social-liberal

• Action Party (1853–1867)
• Italian Radical Party (1904–1922)
• Democratic Party (1913–1919)
• Constitutional Democratic Party (1913–1919)
• Italian Democratic Liberal Party (1919–1926)
• Social Democracy (1922–1926)
• Labour Democratic Party (1943–1948)
• Republican Democratic Concentration (1946)
• Radical Party (1955–1989)
• Democratic Alliance (1993–1997)
• The Network (1991–1999)

Centrist and liberal

• Liberal Union (1913–1922)
• Democratic Union for the Republic (1998–1999)
• Union for the Republic
• Italian Renewal (1996–2002)
• The Democrats (1999–2002)
• Segni Pact (1993–2003)
• Democracy is Freedom – The Daisy (2002–2007)
• Civic Choice (2013–2019)
• Liberal Popular Alliance (2015–2018)

Regionalist and federalist

• Movement for the Independence of Sicily (1943–1951)
• Federalists and Liberal Democrats (1994–1996)
• Federalist Italian League (1995–1996)
• Great South (2011–2013)

Christian-democratic

• Italian Catholic Electoral Union (1906–1919)
• Conservative Catholics (1913–1919)
• Italian People's Party (1919–1926)
• Christian Democracy (1943–1994)
• Italian People's Party (1994–2002)
• Christian Democrats for the Republic (1998)
• Christian Democratic Centre (1994–2002)
• United Christian Democrats (1995–2002)
• European Democracy (2001–2002)
• Christian Democracy for Autonomies (2005–2009)
• Union of Democrats for Europe (1999–2013)

Liberal-conservative

• Economic Party (1919–1924)
• National Democratic Alliance (1953–1954)
• Italian Liberal Party (1922–1994)
• Forza Italia (1994–2009)
• The People of Freedom (2009–2013)
• Future and Freedom (2010–2014)
• New Centre-Right (2013–2017)
• Conservatives and Reformists (2015–2017)
• Direction Italy (2017–2019)
• Cambiamo! (2019–2022)

National-conservative

• Common Man's Front (1946–1949)
• Monarchist National Party (1946–1959)
• People's Monarchist Party (1954–1959)
• Italian Democratic Party of Monarchist Unity (1959–1972)
• National Democracy (1977–1979)
• National Alliance (1995–2009)

Nationalist

• Italian Nationalist Association (1910–1923)
• Combatants' Party (1919–1923)
• National Fascist Party (1921–1943)
• Republican Fascist Party (1943–1945)
• Italian Social Movement (1946–1995)

• List of political parties in Italy
• 19th-century Italian political groups
• Early 20th-century Italian political parties
• 1950s–1990s Italian political parties
• Current Italian political parties