Yvon Dupuis (born in 1926) was first elected to the National Assembly of Quebec in 1952 in Montréal-Sainte-Marie as a member of the Liberal Party of Quebec. He was defeated in 1956. He ran unsuccessfully as an independent Liberal in Saint-Jean-Iberville-Napierville in the 1957 federal election, but was successful as the Liberal candidate in the same riding in the 1958 federal election. He was re-elected in 1962 and 1963, and resigned in 1965. He was defeated as an independent Liberal in 1965.

On February 4, 1973, he was elected leader of the Ralliement créditiste du Québec, but failed to win election in Saint-Jean in the 1973 provincial election. He resigned as leader of the Ralliement créditiste, and founded the Parti présidentiel on May 5, 1974.

He resigned as leader on October 21, 1974, and announced the end of his political career. He was replaced as leader by Yvon Brochu, who merged the party with the Union Nationale on May 31, 1975.

See also

• Politics of Quebec
• List of Quebec general elections
• National Assembly of Quebec
• Timeline of Quebec history
• List of political parties in Quebec