The Mining Parliamentary Bloc (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...

: Bloque Minero Parlamentario, BMP) was an electoral political alliance of the Revolutionary Nationalist Movement

Revolutionary Nationalist Movement

The Revolutionary Nationalist Movement is a Bolivian political party, perhaps the most important in the country during the 20th century. At the legislative elections in 2002, the party won, in an alliance with the Free Bolivia Movement, 26.9% of the popular vote and 36 out of 130 seats in the...

 (MNR) and 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:...

 (POR) 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...

.

The Mining Parliamentary Bloc was established in 1946, for the 1947 presidential

Bolivian presidential election, 1947

Bolivia held a general election on 5 January 1947, electing both a new President of the Republic and a new National Congress.- Presidential election results :- Vice-Presidential election results :...

 and congressional

Bolivian legislative election, 1947

Bolivia held a general election on 5 January 1947, electing both a new President of the Republic and a new National Congress.- Congressional Elections results :...

 elections.

The Mining Parliamentary Bloc presented as its presidential candidate Víctor Paz Estenssoro

Víctor Paz Estenssoro

Ángel Víctor Paz Estenssoro was a politician and president of Bolivia. He ran for president 8 times , winning in 1951, 1960, 1964, and 1985....

, the leader of the MNR. The Bloc elected two senators (Juan Lechín Oquendo

Juan Lechín Oquendo

Juan Lechín Oquendo was a labor-union leader and head of the Federation of Bolivian Mine Workers from 1944 to 1987 and the Bolivian Workers' Union from 1952 to 1987...

 (MNR) and Lucio Mendivil (POR)) and seven deputies (Jesús Aspiazu (MNR), Alberto Costa de la Torre (MNR), Adan Rojas (MNR), Humberto Salamanca (POR), Mario Torres Calleja (MNR), Guillermo Lora

Guillermo Lora

Guillermo Lora was a Trotskyist leader in Bolivia. Lora was active in the Revolutionary Workers' Party from the early 1940s and was its best known leader....

 (POR), and Aníbal Vargas (POR)).