 Langlois was born in Sainte-Marthe-de-Gaspé, Quebec and was educated at Collège Notre-Dame-des-Champs.He was elected in the 1988 federal election at the Manicouagan electoral district for the Progressive Conservative party succeeding Prime Minister Brian Mulroney who won the Charlevoix riding.Langlois held membership in the provincial Quebec Liberal Party at the time, but encouraged federal voters in Quebec to "elect a member on the government side" namely the Progressive Conservatives under Mulroney.