He was re-elected in the 1939, 1944, 1948, 1952, 1956 and 1960 elections.
He was appointed House Whip in 1944 and served as a parliamentary assistant from 1955 to 1960.
He was defeated against Liberal candidate Louis-Philippe Lacroix in the 1962 election.
Langlais died on April 6, 1976 in Quebec City.