The People's Democratic Movement (Spanish: Movimiento Democrático Popular, MDP) was a Chilean left-wing political coalition created on September 20, 1983 and dissolved on June 26, 1987. It was formed by the Communist Party of Chile, PS-Almeyda and the Revolutionary Left Movement (MIR), plus factions of the Christian Left and the Popular Unitary Action Movement (MAPU). Its first president was the socialist Manuel Almeyda.
The reason for its creation was to organize the leftist opposition to the military dictatorship. The MDP led the so-called "Jornadas de Protesta Nacional" driven by opposition to the military dictatorship of General Augusto Pinochet, while actively involved in the reconstruction of the social movements of people, students and workers. Since its inception, the MDP showed himself a staunch opponent of the regime and demanded its immediate end and a general agreement with the Democratic Alliance to establish a provisional government without exclusions.
In August 1984, politicians, lawyers, businessmen and civilians who supported the military regime, including Jaime Guzmán and Pablo Longueira, required the Constitutional Court of Chile, which declared the unconstitutionality of this movement. Despite the ruling, the MDP continued subsisting in semi-clandestine.
The MDP self-dissolved in June 1987 to create a new leftist coalition: United Left.