|Founded||18 December 1945|
|Political position||Centre to centre-left|
When the party appeared on course to win the 1952 election for a constituent assembly, then-dictator Marcos Pérez Jiménez suspended the election. The party joined in the 1958 Puntofijo Pact, and its candidate in that year's presidential election, Wolfgang Larrazábal, was the runner-up. The party resigned from the Puntofijo Pact in 1962 in protest of the decision to exclude Cuba from the Organization of American States, which ended its time as a dominant political party. Its candidate Jóvito Villalba won 19% of the vote in the 1963 election, but only 3% in the 1973 election.
Presidential candidates supportedEdit
Elections where the URD backed the winning candidate shown in bold.
- 1952 election: Jóvito Villalba
- 1958 election: Wolfgang Larrazábal (34.88% of vote)
- 1963 election: Jóvito Villalba (18.89%)
- 1968 election: Miguel Ángel Burelli Rivas (22.22%)
- 1973 election: Jóvito Villalba (3.07%)
- 1978 election: Luis Herrera Campins (COPEI candidate)
- 1983 election: Jaime Lusinchi (Acción Democrática candidate)
- 1988 election: Ismenia Villalba (0.84%)
- 1993 election: Rafael Caldera (independent, backed by a coalition of anti-COPEI/Acción Democrática parties)
- 1998 election: Luis Alfaro Ucero (0.60%)
- 2000 election:
- 2006 election: Manuel Rosales (A New Era candidate)
- Allan R. Brewer-Carías (2010), Dismantling Democracy in Venezuela, Cambridge University Press, p. 41
- Leslie Bethell, ed. (2008), The Cambridge History of Latin America, vol. VI, part 1, Cambridge University Press, p. 440
- Ian Gorvin (1989), Elections since 1945: A worldwide reference compendium, Longman, p. 391
- Miguel Tinker Salas (2007), "U.S. Oil Companies in Venezuela: The Forging of an Enduring Alliance", Venezuela: Hugo Chávez and the Decline of an "Exceptional Democracy", Rowman & Littlefield, p. 44
- J. Denis Derbyshire; Ian Derbyshire (1989), Political Systems Of The World, Chambers, p. 122
- Historia viva, 2002-2003, Jorge Olavarría. 2003. (page 134).