Faure first became a member of Jules Guesde's Parti ouvrier français (POF) in 1901 and was editor-in-chief of the Populaire du Centre. Starting from 1915, he rallied to the centrist and pacifist minority of Jean Longuet in the SFIO, and during the Tours Congress in 1920 he opposed adhesion to the Third International. The Marxist philosopherAntonio Gramsci underscored how, when Faure visited Imola in 1919, after the Bologna Congress, he had seemed to be in perfect agreement with the representatives of Italian "unitarism". Even after the Tours Congress Faure continued using Marxist rhetoric, but he became a moderate and, along with Léon Blum, directed the SFIO. He was elected to the National Assembly several times.