Turner announced that he would resign as leader of the Liberal Party on May 3, 1989. The Liberal Party set a leadership convention for June 23, 1990, in Calgary. Five candidates contested the leadership of the party and former Deputy Prime Minister Jean Chrétien, who had served in every Liberal cabinet since 1965, won on the first ballot. Chrétien's Liberals campaigned in the 1993 election on the promise of renegotiating the North American Free Trade Agreement (NAFTA), and eliminating the Goods and Services Tax (GST). Just after the writ was dropped for the election, they issued the Red Book, an integrated and coherent approach to economic, social, environmental and foreign policy. This was unprecedented for a Canadian party. Taking full advantage of the inability of Mulroney's successor, Kim Campbell, to overcome a large amount of antipathy toward Mulroney, they won a strong majority government with 177 seats—the third-best performance in party history, and their best since 1949. The Progressive Conservatives were cut down to only two seats, suffering a defeat even more severe than the one they had handed the Liberals nine years earlier. The Liberals were re-elected with a considerably reduced majority in 1997, but nearly tied their 1993 total in 2000.