The Popular Front (French: Front populaire) was an alliance of French left-wing movements, including the communist French Communist Party (PCF), the socialist French Section of the Workers' International (SFIO) and the progressive Radical-Socialist Republican Party, during the interwar period. Three months after the victory of the Spanish Popular Front, the Popular Front won the May 1936 legislative election, leading to the formation of a government first headed by SFIO leader Léon Blum and exclusively composed of republican and SFIO ministers.