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Parliamentary elections were held in Bolivia in May 1920 to elect half the seats of the Chamber of Deputies and one-third of the seats in the Senate. The new National Congress was due to open on 6 August but was dissolved on 12 July following a coup-d'état.
References
Pío Cáceres Bilbao. Bolivia: el Senado Nacional (album) : bosquejo histórico parlamentario, 1825-1925. Biblioteca del H. Congreso Nacional, 2000. P.217.