The rise of postmaterialist values in democratic societies is likely to affect traditional representative institutions such as political parties. This article seeks to ascertain whether the leaders and followers of Quebec's two mainstream political parties, the Liberal party and the Parti Québécois, adhere in any different fashion to these values. It is based on two surveys, the mail survey from the 1993 Canadian Election Study and another established by the authors. Data show important cleavages between these two parties on postmaterialism, the leaders and followers of the Parti Québécois being clearly more postmaterialist than their Liberal counterparts. However, the values associated with “New Politics” do not fill the place of old economic cleavages such as those that are based on the redistribution of wealth, still present in the Quebec party system.