Mario Dumont, leader of the Action Démocratique du Québec party, Jacques Parizeau, leader of the Parti Québécois party, and Lucien Bouchard, leader of the Bloc Québécois party, signed the sovereignty-association agreement on June 12, 1995, in Québec City. This alliance was intended to broaden the base in support of sovereignty beyond the Parti Québécois, which had launched the referendum.