The Revolutionary Workers Party Trotskyist-Posadist (Spanish

Spanish language

Spanish , also known as Castilian , is a Romance language in the Ibero-Romance group that evolved from several languages and dialects in central-northern Iberia around the 9th century and gradually spread with the expansion of the Kingdom of Castile into central and southern Iberia during the...

: Partido Obrero Revolucionario Trotskista Posadista, POR-TP) was a small Trotskyist political party

Political party

A political party is a political organization that typically seeks to influence government policy, usually by nominating their own candidates and trying to seat them in political office. Parties participate in electoral campaigns, educational outreach or protest actions...

 in Bolivia

Bolivia

Bolivia officially known as Plurinational State of Bolivia , is a landlocked country in central South America. It is the poorest country in South America...

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The Revolutionary Workers Party Trotskyist-Posadist was established by a dissident group which broke away from the Revolutionary Workers' Party

Revolutionary Workers' Party (Bolivia)

The Revolutionary Workers' Party is a Trotskyist political party in Bolivia. At its height in the late 1940s and early 1950s, the POR was one of the few Trotskyist parties in history to gain a mass working-class following.-Beginnings:...

 in 1963.

Led by workers' leader Carlos Flores Bedregal.
In 1978 and 1979 the POR-TP took part in an electoral coalition Democratic and Popular Union backing Hernán Siles Zuazo

Hernán Siles Zuazo

Hernán Siles Zuazo was a politician from Bolivia. He served as his country's constitutionally elected president twice, from 1956 to 1960 and again from 1982 to 1985....

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For the 1980 elections, the POR-TP was the component of the Democratic Revolutionary Front-New Alternative

Democratic Revolutionary Front-New Alternative

The Democratic Revolutionary Front-New Alternative was a left-centrist electoral political alliance in Bolivia.The FDR-NA was formed in Spring 1980 byChristian Democratic Party, PDC;...

, with the OID's leader Luis Adolfo Siles Salinas

Luis Adolfo Siles Salinas

Luis Adolfo Siles Salinas was the Constitutional President of Bolivia for a period of five months between April and September 1969.-Background and early life:...

 as the coalition's presidential candidate.
In 1985 it took part in an electoral coalition United Left

United Left (Bolivia, 1985)

The United Left was a political coalition in Bolivia, launched ahead of the 1985 presidential election. IU was founded on February 22, 1985, by Isaac Sandoval Rodríguez, Federico Hurtado and Pedro Monteciño...

 backing Isaac Sandóval Rodríguez.