The military dictator Pérez Jiménez was forced out on 23 January 1958. In an effort to consolidate a young democracy, the three major political parties (Acción Democrática (AD), COPEI and Unión Republicana Democrática (URD), with the notable exception of the Communist Party of Venezuela), signed the Puntofijo Pact power-sharing agreement. The two first parties would dominate the political landscape for four decades.