The Parti social démocratique du Québec (PSD ; English: Social Democratic Party of Quebec) was the Quebec wing of the Co-operative Commonwealth Federation. It was founded in 1939 as the Fédération du Commonwealth Coopératif and was led by Romuald-Joseph Lamoureux in the 1944 general election, by Thérèse Casgrain from 1951 to 1957 and by Michel Chartrand from 1957 to 1960. The name Parti social démocratique was adopted in 1955. The party was refounded in 1963 as the New Democratic Party of Quebec (Nouveau Parti démocratique du Québec), however the party soon split over the issue of Quebec self-determination with Quebec nationalists leaving to form, in November 1963, the Parti socialiste du Québec led by former PSD leader Michel Chartrand. The NDPQ renamed itself the Parti de la Democratie Socialiste (Party of Socialist Democracy) following a 1991 split with the federal NDP over the question of Quebec independence. General election results A candidate ran as "CCF candidate" in the 1936 Quebec general election, although the Quebec section of the party had not been founded yet. Members of Legislative Assembly of Quebec David Côté, MLA 1944-1948, Rouyn-Noranda See also Politics of Quebec List of Quebec general elections List of Quebec premiers List of Quebec leaders of the Opposition National Assembly of Quebec Timeline of Quebec history Political parties in Quebec References External links National Assembly historical information La Politique québécoise sur le Web Provincial political parties in Quebec Political parties established in 1939 Quebec 1939 establishments in Quebec Social democratic parties in Canada Defunct provincial political parties in Quebec New Democratic Party of Quebec