The Radical Party of the Left (French: Parti radical de gauche, PRG) is a social-liberal political party in France. A party in the Radical tradition, since 1972 the PRG was a close ally of the major party of the centre-left in France, the Socialist Party (French: Parti socialiste, PS). After the 2017 presidential and legislative elections, negotiations to merge the PRG with the Radical Party (from which the PRG emerged in 1972) began and the refounding congress to reunite the parties into the Radical Movement was held on 9 and 10 December 2017. However, a faction of ex-PRG members, including its last president Sylvia Pinel, split from the Radical Movement in February 2019 due to its expected alliance with La République En Marche in the European elections and resurrected the PRG.