Socialist Party of Chile Socialist Party of Chile The Socialist Party of Chile (, or PS) is a political party within the centre-left Nueva Mayoría. Its historic leader was President of Chile Salvador Allende, who was deposed in a coup d'état by General Pinochet in 1973. Twenty-seven years later, Ricardo Lagos Escobar represented the Socialist Party in the 1999 presidential elections. He won 48.0% in the first round of voting and was elected with 51.3% in the second round. In the legislative elections on 16 December 2001, as part of the Coalition of Parties for Democracy, the party won 10 out of 117 seats
History of Chile during the Parliamentary Era (1891–1925) President remained the head of state but its powers and control of the government were reduced. The Parliamentary Republic lasted until the 1925 Constitution drafted by President Arturo Alessandri and his minister José Maza. The new Constitution created a presidential system, which lasted, with several modifications, until the 1973 coup d'état. In the late 19th and early 20th centuries, Chile temporarily resolved its border disputes with Argentina with the Boundary treaty of 1881 between Chile and Argentina, the Puna de Atacama Lawsuit of 1899 and the Cordillera of the Andes Boundary Case, 1902. The pseudo-parliamentary system was established in Chile