By-elections

Select a year of election:

• 2012, June 11 (Argenteuil, LaFontaine)
• 2011, December 5 (Bonaventure)
• 2010, November 29 (Kamouraska-Témiscouata)
• 2010, September 13 (Saint-Laurent)
• 2010, July 5 (Vachon)
• 2009, September 21 (Rousseau)
• 2009, June 22 (Marguerite-Bourgeoys, Rivière-du-Loup)
• 2008, September 29 (Jean-Talon)
• 2008, May 12 (Bourget, Hull, Pointe-aux-Trembles)
• 2007, September 24 (Charlevoix)
• 2006, August 14 (Pointe-aux-Trembles, Taillon)
• 2006, April 10 (Sainte-Marie-Saint-Jacques)
• 2005, December 12 (Outremont, Verchères)
• 2004, September 20 (Gouin, Laurier-Dorion, Nelligan, Vanier)
• 2002, June 17 (Berthier, Joliette, Lac-Saint-Jean, Vimont)
• 2002, April 15 (Anjou, Saguenay, Viger)
• 2001, October 1^st (Blainville, Jonquière, Labelle, Laviolette)
• 2001, April 9 (Mercier)
• 1998, June 1^st (Argenteuil)
• 1997, October 6 (Bertrand, Bourassa, Duplessis, Kamouraska-Témiscouata)
• 1997, April 28 (Beauce-Sud, Prévost)
• 1996, December 9 (Pointe-aux-Trembles)
• 1996, June 10 (L'Assomption, Outremont)
• 1996, February 19 (Jonquière, La Prairie)
• 1994, February 28 (Shefford)
• 1994, February 21 (Bonaventure)
• 1993, December 13 (Laval-des-Rapides)
• 1993, July 5 (Portneuf)
• 1992, January 20 (Anjou)
• 1991, August 12 (Montmorency)
• 1989, May 29 (Hull, Papineau)
• 1988, June 20 (Anjou, Roberval)
• 1987, September 14 (Notre-Dame-de-Grâce)
• 1986, January 20 (Saint-Laurent)
• 1985, June 3 (Bertrand, Bourget, L'Assomption, Trois-Rivières)
• 1984, November 26 (Saint-Jacques)
• 1984, June 18 (Marguerite-Bourgeoys, Marie-Victorin, Sauvé)
• 1983, December 5 (Jonquière, Mégantic-Compton)
• 1983, June 20 (Charlesbourg, Saguenay, Saint-Jacques)
• 1982, April 5 (Louis-Hébert, Saint-Laurent)
• 1980, November 17 (Brome-Missisquoi, Johnson, Mégantic-Compton, Outremont)
• 1979, November 26 (D'Arcy-McGee)
• 1979, November 14 (Beauce-Sud, Maisonneuve, Prévost)
• 1979, April 30 (Argenteuil, Jean-Talon)
• 1978, July 5 (Notre-Dame-de-Grâce)
• 1974, August 28 (Johnson)
• 1972, October 11 (Duplessis) - November 15 (Gatineau) ^[1]
• 1971, February 8 (Chambly)
• 1969, October 8 (Dorion, Saint-Jacques, Sainte-Marie, Trois-Rivières, Vaudreuil-Soulanges)
• 1969, March 3 (Dorion)
• 1968, December 4 (Bagot, Notre-Dame-de-Grâce)
• 1965, January 18 (Saint-Maurice, Terrebonne)
• 1964, October 5 (Dorchester, Matane, Montréal-Verdun, Saguenay)
• 1963, September 25 (Montréal-Notre-Dame-De-Grâce)

By-elections
April 30, 1979 (Argenteuil, Jean-Talon)

• Results by political party
• Results by electoral division
• List of members by electoral division

List of members by electoral division

Electoral division	Name	Political affiliation
Argenteuil	Ryan, Claude	P.L.Q.
Jean-Talon	Rivest, Jean-Claude	P.L.Q.