 The Socialist Gaston Defferre and the Radical Jean-Jacques Servan-Schreiber advocated such an alliance in the 1960s, culminating in Defferre's disastrous candidacy in the 1969 presidential election.Presidents Valéry Giscard d'Estaing and François Mitterrand later unsuccessfully tried to revive the Third Force, the latter doing so in a sense by pursuing a policy of "ouverture" toward the Union for French Democracy after the failure of Mitterrand's Socialist Party and its allies to gain an outright majority in the 1988 legislative election.However, each time, the most important right-wing party, the Rally for the Republic (RPR), opposed such an alliance.