The list of Quebec by-elections includes every provincial by-election held in the Canadian province of Quebec since Confederation. By-elections occur whenever there is a vacancy in the National Assembly (known as the Legislative Assembly until 1968), although an imminent general election may allow the vacancy to remain until the dissolution of parliament.
Causes A by-election occurs whenever there is a vacancy in the Quebec legislature. Vacancies can occur for the following reasons:
Death of a member. Resignation of a member. Voided results Expulsion from the legislature. Ineligibility to sit. Appointment to the Legislative Council, Quebec's appointed upper house, which was abolished in 1968. Appointment to the cabinet. Until 1927 incumbent members recontested their seats upon being appointed to Cabinet. These Ministerial by-elections were almost always uncontested.
43rd National Assembly of Quebec 2022–2026 By-election Date Incumbent Party Winner Party Cause RetainedChicoutimiFebruary 23, 2026Andrée Laforest Coalition Avenir QuébecMarie-Karlynn Laflamme Parti QuébécoisResigned to run for Mayor of Saguenay, defeated.NoArthabaskaAugust 11, 2025Eric Lefebvre Coalition Avenir QuébecAlex Boissonneault Parti QuébécoisResigned to run federally in Richmond—Arthabaska, elected.NoTerrebonneMarch 17, 2025Pierre Fitzgibbon Coalition Avenir QuébecCatherine Gentilcore Parti QuébécoisResignationNoJean-TalonOctober 2, 2023Joëlle Boutin Coalition Avenir QuébecPascal Paradis Parti QuébécoisResignationNoSaint-Henri—Sainte-AnneMarch 13, 2023Dominique Anglade LiberalGuillaume Cliche-Rivard Québec solidaireResigned as Liberal leader and MNA.No
42nd National Assembly of Quebec 2018–2022 By-election Date Incumbent Party Winner Party Cause RetainedMarie-VictorinApril 11, 2022Catherine Fournier Parti QuébécoisShirley Dorismond Coalition Avenir QuébecResigned to run for Mayor of Longueuil; elected.NoJean-TalonDecember 2, 2019Sébastien Proulx Liberal Joëlle Boutin Coalition Avenir QuébecResignationNo RobervalDecember 10, 2018Philippe Couillard Liberal Nancy Guillemette Coalition Avenir QuébecResignationNo
41st National Assembly of Quebec 2014–2018 By-election Date Incumbent Party Winner Party Cause RetainedLouis-HebertOctober 2, 2017Sam Hamad Liberal Geneviève Guilbault Coalition Avenir QuébecResignationNo GouinMay 29, 2017Françoise David Québec solidaireGabriel Nadeau-Dubois Québec solidaireResignationYesArthabaskaDecember 5, 2016Sylvie Roy Coalition Avenir QuébecÉric Lefebvre Coalition Avenir QuébecDeathYesMarie-VictorinDecember 5, 2016Bernard Drainville Parti QuébécoisCatherine Fournier Parti QuébécoisResignationYesSaint-JérômeDecember 5, 2016Pierre Karl Péladeau Parti QuébécoisMarc Bourcier Parti QuébécoisResignationYesVerdunDecember 5, 2016Jacques Daoust LiberalIsabelle Melançon LiberalResignationYesChicoutimiApril 11, 2016Stéphane Bédard Parti QuébécoisMireille Jean Parti QuébécoisResignationYesBeauce-Sud November 9, 2015 Robert Dutil LiberalPaul Busque LiberalResignationYesFabre November 9, 2015 Gilles Ouimet LiberalMonique Sauvé LiberalResignationYesRené-Lévesque November 9, 2015 Marjolain Dufour Parti QuébécoisMartin Ouellet Parti QuébécoisResignationYesSaint-Henri–Sainte-Anne November 9, 2015 Marguerite Blais LiberalDominique Anglade LiberalResignationYesChauveau June 8, 2015 Gérard Deltell Coalition Avenir QuébecVéronyque Tremblay LiberalResignation to contest the 2015 federal electionNoJean-Talon June 8, 2015 Yves Bolduc LiberalSébastien Proulx LiberalResignationYesRichelieu March 9, 2015 Élaine Zakaïb Parti QuébécoisSylvain Rochon Parti QuébécoisResignationYesLévisOctober 20, 2014Christian Dubé Coalition Avenir QuébecFrançois Paradis Coalition Avenir QuébecResignationYes
40th National Assembly of Quebec 2012–2014 By-election Date Incumbent Party Winner Party Cause RetainedViauDecember 9, 2013Emmanuel Dubourg LiberalDavid Heurtel LiberalResignation to contest a federal by-electionYesOutremontDecember 9, 2013Raymond Bachand LiberalPhilippe Couillard LiberalResignation after losing leadership convention to Couillard.Yes
39th National Assembly of Quebec 2008–2012 By-election Date Incumbent Party Winner Party Cause RetainedLaFontaineJune 11, 2012Tony Tomassi Independent*Marc Tanguay LiberalResignationYes/NoArgenteuilJune 11, 2012David Whissell LiberalRoland Richer Parti QuébécoisResignationNoBonaventureDecember 5, 2011Nathalie Normandeau LiberalDamien Arsenault LiberalResignationYesKamouraska-TémiscouataNovember 29, 2010Claude Béchard LiberalAndré Simard Parti QuébécoisResignationNoSaint-LaurentSeptember 13, 2010Jacques Dupuis LiberalJean-Marc Fournier LiberalResignationYesVachonJuly 5, 2010Camil Bouchard Parti QuébécoisMartine Ouellet Parti QuébécoisResignationYesRousseauSeptember 21, 2009François Legault Parti QuébécoisNicolas Marceau Parti QuébécoisResignationYesRivière-du-LoupJune 22, 2009Mario Dumont ADQJean D'Amour LiberalResignationNoMarguerite-BourgeoysJune 22, 2009Monique Jérôme-Forget LiberalClément Gignac LiberalResignationYes Tomassi was a former Liberal
38th National Assembly of Quebec 2007–2008 By-election Date Incumbent Party Winner Party Cause RetainedJean-TalonSeptember 29, 2008Philippe Couillard LiberalYves Bolduc LiberalResignationYesPointe-aux-TremblesMay 12, 2008André Boisclair Parti QuébécoisNicole Léger Parti QuébécoisResignationYesHullMay 12, 2008Roch Cholette LiberalMaryse Gaudreault LiberalResignationYesBourgetMay 12, 2008Diane Lemieux Parti QuébécoisMaka Kotto Parti QuébécoisResignationYesCharlevoixSeptember 24, 2007Rosaire Bertrand Parti QuébécoisPauline Marois Parti QuébécoisResignation to provide a seat for MaroisYes
37th National Assembly of Quebec 2003–2007 By-election Date Incumbent Party Winner Party Cause RetainedTaillonAugust 14, 2006Pauline Marois Parti QuébécoisMarie Malavoy Parti QuébécoisResignationYesPointe-aux-TremblesAugust 14, 2006Nicole Léger Parti QuébécoisAndré Boisclair Parti QuébécoisResignationYesSainte-Marie–Saint-JacquesApril 10, 2006André Boulerice Parti QuébécoisMartin Lemay Parti QuébécoisResignationYesVerchèresDecember 12, 2005Bernard Landry Parti QuébécoisStéphane Bergeron Parti QuébécoisResignationYesOutremontDecember 12, 2005Yves Séguin LiberalRaymond Bachand LiberalResignationYesVanierSeptember 20, 2004Marc Bellemare LiberalSylvain Légaré ADQResignationNoNelliganSeptember 20, 2004Russell Williams LiberalYolande James LiberalResignationYesLaurier-DorionSeptember 20, 2004Christos Sirros LiberalElsie Lefebvre Parti QuébécoisResignationNoGouinSeptember 20, 2004André Boisclair Parti QuébécoisNicolas Girard Parti QuébécoisResignationYes
36th National Assembly of Quebec 1998–2003 By-election Date Incumbent Party Winner Party Cause RetainedVimontJune 17, 2002David Cliche Parti QuébécoisFrançois Gaudreau ADQResignationNoLac-Saint-JeanJune 17, 2002Jacques Brassard Parti QuébécoisStéphan Tremblay Parti QuébécoisResignationYesJolietteJune 17, 2002Guy Chevrette Parti QuébécoisSylvie Lespérance ADQResignationNoBerthierJune 17, 2002Gilles Baril Parti QuébécoisMarie Grégoire ADQResignationNoVigerApril 15, 2002Cosmo Maciocia LiberalAnna Mancuso LiberalResignation to enter municipal politics in MontrealYesSaguenayApril 15, 2002Gabriel-Yvan Gagnon Parti QuébécoisFrançois Corriveau ADQResignationNoAnjouApril 15, 2002Jean-Sébastien Lamoureux LiberalLise Thériault LiberalResignation due to a vote buying scandal causing doubt on the validity of his electionYesLavioletteOctober 1, 2001Jean-Pierre Jolivet Parti QuébécoisJulie Boulet LiberalResignationNoLabelleOctober 1, 2001Jacques Léonard Parti QuébécoisSylvain Pagé Parti QuébécoisResignationYesJonquièreOctober 1, 2001Lucien Bouchard Parti QuébécoisFrançoise Gauthier LiberalResignationNoBlainvilleOctober 1, 2001Céline Signori Parti QuébécoisRichard Legendre Parti QuébécoisAppointed to the Quebec Municipal CommissionYesMercierApril 9, 2001Robert Perreault Parti QuébécoisNathalie Rochefort LiberalResignationNo
35th National Assembly of Quebec 1994–1998 By-election Date Incumbent Party Winner Party Cause RetainedArgenteuilJune 1, 1998Régent L. Beaudet LiberalDavid Whissell LiberalResignationYesKamouraska-TémiscouataOctober 6, 1997France Dionne LiberalClaude Béchard LiberalResignation to contest the 1997 federal electionYesDuplessisOctober 6, 1997Denis Perron Parti QuébécoisNormand Duguay Parti QuébécoisDeathYesBourassaOctober 6, 1997Yvon Charbonneau LiberalMichèle Lamquin-Éthier LiberalResignation to contest the 1997 federal electionYesBertrandOctober 6, 1997Robert Therien Independent*Denis Chalifoux LiberalVoid ElectionYes/NoPrévostApril 28, 1997Daniel Paillé Parti QuébécoisLucie Papineau Parti QuébécoisResignationYesBeauce-SudApril 28, 1997Paul-Eugène Quirion LiberalDiane Leblanc LiberalDeathYesPointe-aux-TremblesDecember 9, 1996Michel Bourdon Parti QuébécoisNicole Léger Parti QuébécoisResignationYesOutremontJune 10, 1996Gérald Tremblay LiberalPierre-Étienne Laporte LiberalResignationYesL'AssomptionJune 10, 1996Jacques Parizeau Parti QuébécoisJean-Claude St-André Parti QuébécoisResignationYesLa PrairieFebruary 19, 1996Denis Lazure Parti QuébécoisMonique Simard Parti QuébécoisResignationYesJonquièreFebruary 19, 1996Francis Dufour Parti QuébécoisLucien Bouchard Parti QuébécoisResignation to provide a seat for BouchardYes Therien was a former Liberal
34th National Assembly of Quebec 1989–1994 By-election Date Incumbent Party Winner Party Cause RetainedSheffordFebruary 28, 1994Roger Paré Parti QuébécoisBernard Brodeur LiberalResignationNoBonaventureFebruary 21, 1994Gérard D. Levesque LiberalMarcel Landry Parti QuébécoisDeathNoLaval-des-RapidesDecember 13, 1993Guy Bélanger LiberalSerge Ménard Parti QuébécoisResignationNoPortneufJuly 5, 1993Michel Pagé LiberalRoger Bertrand Parti QuébécoisResignationNoAnjouJanuary 20, 1992René Serge Larouche Independent*Pierre Bélanger Parti QuébécoisResignationNoMontmorencyAugust 12, 1991Yves Séguin LiberalJean Filion Parti QuébécoisResignationNo Larouche was a former Liberal
33rd National Assembly of Quebec 1985–1989 By-election Date Incumbent Party Winner Party Cause RetainedPapineauMay 29, 1989Mark Assad LiberalNorman MacMillan LiberalResignation to contest the 1988 federal electionYesHullMay 29, 1989Gilles Rocheleau LiberalRobert LeSage LiberalResignation to contest the 1988 federal electionYesRobervalJune 20, 1988Michel Gauthier Parti QuébécoisGaston Blackburn LiberalResignationNoAnjouJune 20, 1988Pierre-Marc Johnson Parti QuébécoisRené Serge Larouche LiberalResignationNoNotre-Dame-de-GrâceSeptember 14, 1987Reed Scowen LiberalHarold Thuringer LiberalResignation to become Delegate GeneralYesSaint-LaurentJanuary 20, 1986Germain Leduc LiberalRobert Bourassa LiberalResignation to provide a seat for BourassaYes
32nd National Assembly of Quebec 1981–1985