 Mitterrand and the CIR, which joined the PS in Epinay, advocated immediate negotiations with the PCF in order to write a common election programme.Indeed, Mittterrand was candidate of the Left, supported by Socialists and Communists, in the 1965 presidential election.The will to overthrow Savary and Mollet's group from the leadership of the party permitted the birth of a broad coalition between the Mitterrand, Defferre, Mauroy and Chevènement factions.