A "tripartite agreement" mapping out the plan for accession to independence was written and signed by the leaders of the Parti Québécois, the Bloc Québécois and the Action démocratique du Québec on 12 June 1995. It revived René Lévesque's notion that the referendum should be followed by the negotiating of an association agreement between an independent Quebec and the rest of Canada. This provision was inspired by Bouchard. Parizeau had previously wanted a vote simply on independence. The difference became moot when 50.6% of voters taking part in the referendum rejected the sovereignty plan. An overwhelming "Non" vote in Montreal tipped the balance.