Education
He attended Université du Québec à Montréal, earning a bachelor"s degree in philosophy in 1984 and a Masters in political philosophy in 1988.
He attended Université du Québec à Montréal, earning a bachelor"s degree in philosophy in 1984 and a Masters in political philosophy in 1988.
Thériault was born in Montreal. He later earned a Diplôme d'études supérieures spécialisées in bioethics at the Université de Montréal in 2002. After obtaining his master"s degree, he taught philosophy at Collège de Maisonneuve from 1985 to 2003.
He also coached water polo from 1979 to 1988.
He was bureau chief for Parti Québécois in Ville-Marie, Montreal from 1999 to 2003. He was elected in the Quebec general election, 2003, succeeding Gilles Labbé.
He was defeated in the Quebec general election, 2007 by Ginette Grandmont. Federal
Provincial
Municipal.
As a member of the Parti Québécois, he served as a Member of the National Assembly of Quebec from 2003 to 2007, representing the Masson electoral district. In 2015, He was elected to the Canadian House of Commons representing Montcalm, as a member of the Bloc Québécois, in addition he serves as the Bloc Québécois House Leader. He served as a member of the Ethics Committee of the Maisonneuve-Rosemont Hospital and Jeanne-Le Ber nursing home from 2000 to 2003.
He was a member of the Board of Directors of the Maisonneuve Cooperative School (Coopérative scolaire Maisonneuve) from 2001 to 2003.