He was first elected to the Legislative Assembly of Quebec as a member of the Conservative Party for the riding of Montréal–Sainte-Marie in the 1923 election. He was defeated in the 1927 election, but re-elected in a by-election on 24 October 1928. He was elected leader of the Conservative Party on 10 July 1929, led the party to defeat in the 1931 election, and failed to win a seat in Montréal–Saint-Jacques after vacating his previous seat. He resigned as Conservative leader on 19 September 1932.