The Communist Party of Nicaragua (Spanish: Partido Comunista de Nicaragua, PCdeN) is a communist political party in Nicaragua. Founded as the Socialist Workers' Party (Spanish: Partido Obrero Socialista) in 1967, the founding core members were Juan Lorio, Augusto Lorío, Elí Altamirano (who became General Secretary of the PCdeN) and Manuel Pérez Estrada, who all had been expelled from the Nicaraguan Socialist Party on 23 April 1967. On 13 December 1970, POS changed its name to PCdeN. In 1990, it joined hands with the right-leaning National Opposition Union to topple the Sandinista government.