The Popular Socialist Party () was a

political party A political party is an organization that coordinates candidates to compete in a particular area's elections. It is common for the members of a party to hold similar ideas about politics, and parties may promote specific political ideology, ...

Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

formed in 1972 with the merger of the Argentine Socialist Party, the '' Movimiento de Acción Popular Argentino'' (MAPA) and other minor groups. Headed by the more radical left group of the Party, it became important in particular in the province of Santa Fe, where Guillermo Estévez Boero was elected deputy in 1987, resulting in being the first Socialist parliamentary since Alfredo Palacios' 1965 death. In 1989, the PSP won the second city of the country,

Rosario Rosario () is the largest city in the central provinces of Argentina, Argentine province of Santa Fe Province, Santa Fe. The city, located northwest of Buenos Aires on the west bank of the Paraná River, is the third-most populous city in the ...

, with the election of Héctor Cavallero (1989–1995), and again with the election of Hermes Binner in 1995 and 2002. Although Cavallero turned to

Carlos Menem Carlos Saúl Menem (2 July 1930 – 14 February 2021) served as the 50th president of Argentina for ten years, from 1989 to 1999. He identified as Peronism, Peronist, serving as President of the Justicialist Party for 13 years (from 1990 to 200 ...

and Justicialism, and then founded his own party, Binner became the first Socialist governor of Argentina following the 2007 general elections, being elected in the Province of Santa Fe. The '' Movimiento Nacional Reformista'' (MNR, National Reformist Movement), which is the estudiantine branch of the PSP, has been one of the most representative estudiantine organization since the 1970s, having several times been represented at the presidency or general secretary of the Argentine University Federation (FUA) and of various local federations. The PSP represented Argentina in the

Socialist International The Socialist International (SI) is a political international or worldwide organisation of political parties which seek to establish democratic socialism, consisting mostly of Social democracy, social democratic political parties and Labour mov ...

and the Latin American Socialist Coordination. In 2002, it merged with the Democratic Socialist Party to form the Socialist Party.

See also