The list of Quebec by-elections includes every 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–present
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Jean-Talon | October 2, 2023 | Joëlle Boutin | Coalition Avenir Québec | Pascal Paradis | Parti Québécois | Resignation | No | ||
| Saint-Henri—Sainte-Anne | March 13, 2023 | Dominique Anglade | Liberal | Guillaume Cliche-Rivard | Québec solidaire | Resigned as Liberal leader and MNA. | No | ||
42nd National Assembly of Quebec 2018–2022
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Marie-Victorin | April 11, 2022 | Catherine Fournier | Parti Québécois | Shirley Dorismond | Coalition Avenir Québec | Resigned to run for Mayor of Longueuil; elected. | No | ||
| Jean-Talon | December 2, 2019 | Sébastien Proulx | Liberal | Joëlle Boutin | Coalition Avenir Québec | Resignation | No | ||
| Roberval | December 10, 2018 | Philippe Couillard | Liberal | Nancy Guillemette | Coalition Avenir Québec | Resignation | No | ||
41st National Assembly of Quebec 2014–2018
40th National Assembly of Quebec 2012–2014
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Viau | December 9, 2013 | Emmanuel Dubourg | Liberal | David Heurtel | Liberal | Resignation to contest a federal by-election | Yes | ||
| Outremont | December 9, 2013 | Raymond Bachand | Liberal | Philippe Couillard | Liberal | Resignation after losing leadership convention to Couillard. | Yes | ||
39th National Assembly of Quebec 2008–2012
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| LaFontaine | June 11, 2012 | Tony Tomassi | Independent* | Marc Tanguay | Liberal | Resignation | Yes/No | ||
| Argenteuil | June 11, 2012 | David Whissell | Liberal | Roland Richer | Parti Québécois | Resignation | No | ||
| Bonaventure | December 5, 2011 | Nathalie Normandeau | Liberal | Damien Arsenault | Liberal | Resignation | Yes | ||
| Kamouraska-Témiscouata | November 29, 2010 | Claude Béchard | Liberal | André Simard | Parti Québécois | Resignation | No | ||
| Saint-Laurent | September 13, 2010 | Jacques Dupuis | Liberal | Jean-Marc Fournier | Liberal | Resignation | Yes | ||
| Vachon | July 5, 2010 | Camil Bouchard | Parti Québécois | Martine Ouellet | Parti Québécois | Resignation | Yes | ||
| Rousseau | September 21, 2009 | François Legault | Parti Québécois | Nicolas Marceau | Parti Québécois | Resignation | Yes | ||
| Rivière-du-Loup | June 22, 2009 | Mario Dumont | ADQ | Jean D'Amour | Liberal | Resignation | No | ||
| Marguerite-Bourgeoys | June 22, 2009 | Monique Jérôme-Forget | Liberal | Clément Gignac | Liberal | Resignation | Yes | ||
* Tomassi was a former Liberal
38th National Assembly of Quebec 2007–2008
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Jean-Talon | September 29, 2008 | Philippe Couillard | Liberal | Yves Bolduc | Liberal | Resignation | Yes | ||
| Pointe-aux-Trembles | May 12, 2008 | André Boisclair | Parti Québécois | Nicole Léger | Parti Québécois | Resignation | Yes | ||
| Hull | May 12, 2008 | Roch Cholette | Liberal | Maryse Gaudreault | Liberal | Resignation | Yes | ||
| Bourget | May 12, 2008 | Diane Lemieux | Parti Québécois | Maka Kotto | Parti Québécois | Resignation | Yes | ||
| Charlevoix | September 24, 2007 | Rosaire Bertrand | Parti Québécois | Pauline Marois | Parti Québécois | Resignation to provide a seat for Marois | Yes | ||
37th National Assembly of Quebec 2003–2007
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Taillon | August 14, 2006 | Pauline Marois | Parti Québécois | Marie Malavoy | Parti Québécois | Resignation | Yes | ||
| Pointe-aux-Trembles | August 14, 2006 | Nicole Léger | Parti Québécois | André Boisclair | Parti Québécois | Resignation | Yes | ||
| Sainte-Marie–Saint-Jacques | April 10, 2006 | André Boulerice | Parti Québécois | Martin Lemay | Parti Québécois | Resignation | Yes | ||
| Verchères | December 12, 2005 | Bernard Landry | Parti Québécois | Stéphane Bergeron | Parti Québécois | Resignation | Yes | ||
| Outremont | December 12, 2005 | Yves Séguin | Liberal | Raymond Bachand | Liberal | Resignation | Yes | ||
| Vanier | September 20, 2004 | Marc Bellemare | Liberal | Sylvain Légaré | ADQ | Resignation | No | ||
| Nelligan | September 20, 2004 | Russell Williams | Liberal | Yolande James | Liberal | Resignation | Yes | ||
| Laurier-Dorion | September 20, 2004 | Christos Sirros | Liberal | Elsie Lefebvre | Parti Québécois | Resignation | No | ||
| Gouin | September 20, 2004 | André Boisclair | Parti Québécois | Nicolas Girard | Parti Québécois | Resignation | Yes | ||
36th National Assembly of Quebec 1998–2003
35th National Assembly of Quebec 1994–1998
*Therien was a former Liberal
34th National Assembly of Quebec 1989–1994
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Shefford | February 28, 1994 | Roger Paré | Parti Québécois | Bernard Brodeur | Liberal | Resignation | No | ||
| Bonaventure | February 21, 1994 | Gérard D. Levesque | Liberal | Marcel Landry | Parti Québécois | Death | No | ||
| Laval-des-Rapides | December 13, 1993 | Guy Bélanger | Liberal | Serge Ménard | Parti Québécois | Resignation | No | ||
| Portneuf | July 5, 1993 | Michel Pagé | Liberal | Roger Bertrand | Parti Québécois | Resignation | No | ||
| Anjou | January 20, 1992 | René Serge Larouche | Independent* | Pierre Bélanger | Parti Québécois | Resignation | No | ||
| Montmorency | August 12, 1991 | Yves Séguin | Liberal | Jean Filion | Parti Québécois | Resignation | No | ||
*Larouche was a former Liberal
33rd National Assembly of Quebec 1985–1989
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Papineau | May 29, 1989 | Mark Assad | Liberal | Norman MacMillan | Liberal | Resignation to contest the 1988 federal election | Yes | ||
| Hull | May 29, 1989 | Gilles Rocheleau | Liberal | Robert LeSage | Liberal | Resignation to contest the 1988 federal election | Yes | ||
| Roberval | June 20, 1988 | Michel Gauthier | Parti Québécois | Gaston Blackburn | Liberal | Resignation | No | ||
| Anjou | June 20, 1988 | Pierre-Marc Johnson | Parti Québécois | René Serge Larouche | Liberal | Resignation | No | ||
| Notre-Dame-de-Grâce | September 14, 1987 | Reed Scowen | Liberal | Harold Thuringer | Liberal | Resignation to become Delegate General | Yes | ||
| Saint-Laurent | January 20, 1986 | Germain Leduc | Liberal | Robert Bourassa | Liberal | Resignation to provide a seat for Bourassa | Yes | ||
32nd National Assembly of Quebec 1981–1985
31st National Assembly of Quebec 1976–1981
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Outremont | November 17, 1980 | André Raynauld | Liberal | Pierre Fortier | Liberal | Resignation | Yes | ||
| Mégantic-Compton | November 17, 1980 | Fernand Grenier | Union Nationale | Fabien Bélanger | Liberal | Resignation to contest the 1980 federal election | No | ||
| Johnson | November 17, 1980 | Maurice Bellemare | Union Nationale | Camille Picard | Liberal | Resignation | No | ||
| Brome-Missisquoi | November 17, 1980 | Armand Russell | Union Nationale | Pierre Paradis | Liberal | Resignation to contest the 1980 federal election | No | ||
| D'Arcy-McGee | November 26, 1979 | Victor Goldbloom | Liberal | Herbert Marx | Liberal | Resignation to become head of the Canadian Council of Christians and Jews | Yes | ||
| Prévost | November 14, 1979 | Jean-Guy Cardinal | Parti Québécois | Solange Chaput-Rolland | Liberal | Death | No | ||
| Maisonneuve | November 14, 1979 | Robert Burns | Parti Québécois | Georges Lalande | Liberal | Resignation (health reasons) | No | ||
| Beauce-Sud | November 14, 1979 | Fabien Roy | Parti national populaire | Hermann Mathieu | Liberal | Resignation to contest the 1979 federal election | No | ||
| Jean-Talon | April 30, 1979 | Raymond Garneau | Liberal | Jean-Claude Rivest | Liberal | Resignation | Yes | ||
| Argenteuil | April 30, 1979 | Zoël Saindon | Liberal | Claude Ryan | Liberal | Resignation to provide a seat for Ryan | Yes | ||
| Notre-Dame-de-Grâce | July 5, 1978 | Bryce Mackasey | Liberal | Reed Scowen | Liberal | Resignation | Yes | ||
30th National Assembly of Quebec 1973–1976
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Johnson | August 28, 1974 | Jean-Claude Boutin | Liberal | Maurice Bellemare | Union Nationale | Sought re-election due to charges of illegally acting as a Crown prosecutor | No | ||
29th National Assembly of Quebec 1970–1973
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Gatineau | November 15, 1972 | Michel Gratton | Liberal | Michel Gratton | Liberal | Void Election | Yes | ||
| Gatineau | October 11, 1972 | Roy Fournier | Liberal | Michel Gratton | Liberal | Appointed a judge | Yes | ||
| Duplessis | October 11, 1972 | Henri-Laurier Coiteux | Liberal | Donald Gallienne | Liberal | Death | Yes | ||
| Chambly | February 8, 1971 | Pierre Laporte | Liberal | Jean Cournoyer | Liberal | Death (murdered) | Yes | ||
28th Legislative/National Assembly of Quebec 1966–1970
Upon the abolition of the Legislative Council on December 31, 1968, the Legislative Assembly of Quebec is renamed the National Assembly of Quebec
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Vaudreuil-Soulanges | October 8, 1969 | Paul Gérin-Lajoie | Liberal | François-Édouard Belliveau | Union Nationale | Resignation | No | ||
| Trois-Rivières | October 8, 1969 | Yves Gabias | Union Nationale | Gilles Gauthier | Union Nationale | Appointed a judge | Yes | ||
| Saint-Jacques | October 8, 1969 | Paul Dozois | Union Nationale | Jean Cournoyer | Union Nationale | Appointed to the Board of Hydro-Québec | Yes | ||
| Sainte-Marie | October 8, 1969 | Edgar Charbonneau | Union Nationale | Jean-Jacques Croteau | Union Nationale | Resignation | Yes | ||
| Dorion | March 3, 1969 | François Aquin | Independent* | Mario Beaulieu | Union Nationale | Resignation | No | ||
| Notre-Dame-de-Grâce | December 4, 1968 | Eric Kierans | Liberal | William Tetley | Liberal | Resignation to contest the 1968 federal election | Yes | ||
| Bagot | December 4, 1968 | Daniel Johnson | Union Nationale | Jean-Guy Cardinal | Union Nationale | Death | Yes | ||
* Aquin was a former Liberal
27th Legislative Assembly of Quebec 1962–1966
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Terrebonne | January 18, 1965 | Lionel Bertrand | Liberal | Denis Hardy | Liberal | Appointed to the Legislative Council | Yes | ||
| Saint-Maurice | January 18, 1965 | René Hamel | Liberal | Jean-Guy Trépanier | Liberal | Appointed a judge | Yes | ||
| Saguenay | October 5, 1964 | Rodrigue Thibault | Liberal | Pierre-Willie Maltais | Liberal | Death | Yes | ||
| Montréal-Verdun | October 5, 1964 | George O'Reilly | Liberal | Claude Wagner | Liberal | Appointed to the Legislative Council | Yes | ||
| Matane | October 5, 1964 | Philippe Castonguay | Liberal | Jacques Bernier | Liberal | Death | Yes | ||
| Dorchester | October 5, 1964 | Joseph-Armand Nadeau | Union Nationale | Francis O'Farrell | Liberal | Death | No | ||
| Montréal–Notre-Dame-de-Grâce | September 25, 1963 | Paul Earl | Liberal | Eric Kierans | Liberal | Death | Yes | ||
26th Legislative Assembly of Quebec 1960–1962
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Jacques-Cartier | December 14, 1961 | Charles-Aimé Kirkland | Liberal | Marie-Claire Kirkland | Liberal | Death | Yes | ||
| Chambly | December 14, 1961 | Robert Théberge | Liberal | Pierre Laporte | Liberal | Death | Yes | ||
| Rouville | November 23, 1960 | Laurent Barré | Union Nationale | François Boulais | Liberal | Resignation | No | ||
| Joliette | November 23, 1960 | Antonio Barrette | Union Nationale | Gaston Lambert | Liberal | Resignation | No | ||
25th Legislative Assembly of Quebec 1956–1960
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Lac-Saint-Jean | September 16, 1959 | Antonio Auger | Union Nationale | Jean-Paul Levasseur | Union Nationale | Appointed to the Legislative Council | Yes | ||
| Labelle | September 16, 1959 | Pierre Bohémier | Union Nationale | Fernand Lafontaine | Union Nationale | Death | Yes | ||
| Roberval | October 15, 1958 | Paul-Henri Spence | Union Nationale | Jean-Joseph Turcotte | Union Nationale | Resignation | Yes | ||
| Labelle | October 15, 1958† | Albiny Paquette | Union Nationale | Pierre Bohémier | Union Nationale | Appointed to the Legislative Council | Yes | ||
| Matane | July 2, 1958 | Onésime Gagnon | Union Nationale | Benoît Gaboury | Union Nationale | Appointed Lieutenant Governor | Yes | ||
| Vaudreuil-Soulanges | September 18, 1957 | Joseph-Édouard Jeannotte | Union Nationale | Loyola Schmidt | Union Nationale | Death | Yes | ||
| Mégantic | September 18, 1957 | Tancrède Labbé | Union Nationale | Joseph-Émile Fortin | Union Nationale | Death (car accident) | Yes | ||
| Compton | September 18, 1957 | Fabien Gagnon | Liberal | Claude-Gilles Gosselin | Union Nationale | Death | No | ||
| Châteauguay | September 18, 1957 | Arthur Laberge | Union Nationale | Joseph-Maurice Laberge | Union Nationale | Death | Yes | ||
† Won by acclamation
24th Legislative Assembly of Quebec 1952–1956
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Westmount–Saint-Georges | July 6, 1955 | George Carlyle Marler | Liberal | John Richard Hyde | Liberal | Resignation to enter federal politics | Yes | ||
| Saint-Hyacinthe | July 6, 1955 | Ernest-Joseph Chartier | Union Nationale | Pierre-Jacques-François Bousquet | Union Nationale | Death | Yes | ||
| Montréal-Laurier | July 6, 1955 | Paul Provençal | Union Nationale | Arsène Gagné | Union Nationale | Death | Yes | ||
| Compton | September 15, 1954 | Charles Daniel French | Union Nationale | John William French | Union Nationale | Death | Yes | ||
| Portneuf | July 9, 1953 | Bona Dussault | Union Nationale | Rosaire Chalifour | Union Nationale | Death | Yes | ||
| Montréal-Outremont | July 9, 1953 | Henri Groulx | Liberal | Georges-Émile Lapalme | Liberal | Death | Yes | ||
| Matapédia | July 9, 1953 | Philippe Cossette | Union Nationale | Clovis Gagnon | Union Nationale | Death (car accident) | Yes | ||
23rd Legislative Assembly of Quebec 1948–1952
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Lévis | February 16, 1949 | Joseph-Théophile Larochelle | Union Nationale | Joseph-Albert Samson | Union Nationale | Appointed to the Legislative Council | Yes | ||
| Brome | December 7, 1948† | Jonathan Robinson | Union Nationale | Charles James Warwick Fox | Union Nationale | Death | Yes | ||
† Won by acclamation
22nd Legislative Assembly of Quebec 1944–1948
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Huntingdon | July 23, 1947 | Dennis James O'Connor | Liberal | John Gillies Rennie | Union Nationale | Death | No | ||
| Bagot | December 18, 1946 | Cyrille Dumaine | Liberal | Daniel Johnson | Union Nationale | Death | No | ||
| Compton | July 3, 1946 | William James Duffy | Liberal | Charles Daniel French | Union Nationale | Death | No | ||
| Beauce | November 21, 1945 | Édouard Lacroix | Bloc populaire canadien | Georges-Octave Poulin | Union Nationale | Resignation | No | ||
21st Legislative Assembly of Quebec 1939–1944
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Westmount–Saint-Georges | March 23, 1942 | George Gordon Hyde | Liberal | George Carlyle Marler | Liberal | Appointed to the Legislative Council | Yes | ||
| Richelieu-Verchères | March 23, 1942 | Félix Messier | Liberal | Joseph-Willie Robidoux | Liberal | Appointed to the Legislative Council | Yes | ||
| Montréal–Saint-Jacques | March 23, 1942 | Joseph-Roméo Toupin | Liberal | Claude Jodoin | Liberal | Death | Yes | ||
| Montréal–Sainte-Anne | March 23, 1942 | Francis Lawrence Connors | Liberal | Thomas Guérin | Liberal | Appointed to the Legislative Council | Yes | ||
| Saint-Jean–Napierville | October 6, 1941 | Alexis Bouthillier | Liberal | Jean-Paul Beaulieu | Union Nationale | Death | No | ||
| Huntingdon | October 6, 1941 | James Walker Ross | Liberal | Dennis James O'Connor | Liberal | Death | Yes | ||
| Terrebonne | November 19, 1940 | Athanase David | Liberal | Damase Perrier | Liberal | Appointed to the Senate | Yes | ||
| Mégantic | November 19, 1940 | Louis Houde | Liberal | Tancrède Labbé | Union Nationale | Resignation to be appointed a judge | No | ||
20th Legislative Assembly of Quebec 1936–1939
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Stanstead | November 2, 1938 | Rouville Beaudry | Union Nationale | Henri Gérin | Union Nationale | Resignation | Yes | ||
| Montréal–Saint-Louis | November 2, 1938 | Peter Bercovitch | Liberal | Louis Fitch | Union Nationale | Resignation to enter federal politics | No | ||
| Chicoutimi | May 25, 1938 | Arthur Larouche | Union Nationale | Antonio Talbot | Union Nationale | Resignation | Yes | ||
| Bagot | February 16, 1938 | Cyrille Dumaine | Liberal | Philippe Adam | Union Nationale | Void Election | No | ||
| Beauce | March 17, 1937 | Raoul Poulin | Union Nationale | Joseph-Emile Perron | Union Nationale | Resignation | Yes | ||
19th Legislative Assembly of Quebec 1935–1936
no by-elections
18th Legislative Assembly of Quebec 1931–1935
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Jacques-Cartier | November 25, 1933† | Victor Marchand | Liberal | Joseph-Théodule Rhéaume | Liberal | Appointed to the Legislative Council | Yes | ||
| Wolfe | November 14, 1933 | Cyrénus Lemieux | Liberal | Thomas Hercule Lapointe | Liberal | Appointed Sheriff | Yes | ||
| Nicolet | November 7, 1933† | Joseph-Alcide Savoie | Liberal | Alexandre Gaudet | Liberal | Death | Yes | ||
† Won by acclamation
17th Legislative Assembly of Quebec (1927–1931)
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Maskinongé | November 4, 1930 | Joseph-William Gagnon | Liberal | Louis-Joseph Thisdel | Liberal | Death | Yes | ||
| Huntingdon | November 4, 1930 | Andrew Philps | Liberal | Martin Bettie Fisher | Conservative | Death | No | ||
| Deux-Montagnes | November 4, 1930 | Arthur Sauvé | Conservative | Paul Sauvé | Conservative | Resignation to contest the 1930 federal election | Yes | ||
| Bellechasse | October 20, 1930 | Antonin Galipeault | Liberal | Robert Taschereau | Liberal | Appointed a judge | Yes | ||
| Beauce | December 9, 1929† | Joseph-Hugues Fortier | Liberal | Joseph-Édouard Fortin | Liberal | Appointed a judge | Yes | ||
| Montcalm | November 16, 1929 | Joseph-Ferdinand Daniel | Liberal | Joseph-Léonide Perron | Liberal | Appointed to the Legislative Council | Yes | ||
| Richelieu | October 28, 1929 | Jean-Baptiste Lafrenière | Liberal | Avila Turcotte | Liberal | Appointed Chairman of the Commission of Agricultural Credit | Yes | ||
| Compton | September 30, 1929 | Jacob Nicol | Liberal | Andrew Ross McMaster | Liberal | Appointed to the Legislative Council | Yes | ||
| L'Islet | May 13, 1929† | Élisée Thériault | Liberal | Adélard Godbout | Liberal | Appointed to the Legislative Council | Yes | ||
| Québec-Est | October 24, 1928 | Louis-Alfred Létourneau | Liberal | Oscar Drouin | Liberal | Appointed to the Legislative Council | Yes | ||
| Montréal–Sainte-Marie | October 24, 1928 | Joseph Gauthier | Liberal | Camillien Houde | Conservative | Void Election | No | ||
| Îles-de-la-Madeleine | July 14, 1928† | Joseph-Édouard Caron | Liberal | Amédée Caron | Liberal | Appointed to the Legislative Council | Yes | ||
| Portneuf | October 31, 1927 | Édouard Hamel | Liberal | Victor Marchand | Liberal | Appointed Registrar | Yes | ||
| Kamouraska | October 31, 1927 | Nérée Morin | Liberal | Pierre Gagnon | Liberal | Death | Yes | ||
† Won by acclamation
16th Legislative Assembly of Quebec 1923–1927
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Jacques-Cartier | November 30, 1925 | Esioff-Léon Patenaude | Conservative | Victor Marchand | Liberal | Resignation to contest the 1925 federal election | No | ||
| Champlain | November 30, 1925 | Bruno Bordeleau | Liberal | William-Pierre Grant | Liberal | Appointed registrar | Yes | ||
| Berthier | November 30, 1925 | Siméon Lafrenière | Liberal | Amédée Sylvestre | Liberal | Appointed registrar | Yes | ||
| Argenteuil | November 30, 1925 | John Hay | Liberal | Joseph-Léon Saint-Jacques | Conservative | Death | No | ||
| Témiscamingue | November 28, 1924 | Télesphore Simard | Liberal | Joseph Miljours | Liberal | Death | Yes | ||
| Sherbrooke | November 5, 1924 | Moïse O'Bready | Conservative | Armand-Charles Crépeau | Conservative | Death | Yes | ||
| Saint-Maurice | November 5, 1924 | Léonide-Nestor-Arthur Ricard | Liberal | Alphonse-Edgar Guillemette | Liberal | Death (car accident) | Yes | ||
| Québec-Comté | November 5, 1924 | Aurèle Leclerc | Liberal | Ludger Bastien | Conservative | Appointed registrar | No | ||
| Montréal–Sainte-Anne | November 5, 1924 | William James Hushion | Liberal | Joseph Henry Dillon | Liberal | Resignation to enter federal politics | Yes | ||
| Bonaventure | November 5, 1924 | Joseph-Fabien Bugeaud | Liberal | Pierre-Émile Côté | Liberal | Appointed a judge | Yes | ||
| Yamaska | October 22, 1923 | Édouard Ouellette | Liberal | David Laperrière | Liberal | Appointed to the Legislative Council | Yes | ||
| Richmond | October 22, 1923 | Georges-Ervé Denault | Liberal | Stanislas-Edmond Desmarais | Liberal | Death | Yes | ||
| Brome | October 22, 1923 | William Robert Oliver | Liberal | Carlton James Oliver | Liberal | Death | Yes | ||
| Abitibi | October 22, 1923 | Joseph-Édouard Perrault | Liberal | Hector Authier | Liberal | Chose to sit for Arthabaska | Yes | ||
15th Legislative Assembly of Quebec 1919–1923
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Sherbrooke | September 7, 1922† | Joseph-Henri Lemay | Liberal | Ludger Forest | Liberal | Appointed a judge | Yes | ||
| Labelle | August 17, 1922 | Honoré Achim | Liberal | Désiré Lahaie | Liberal | Appointed a judge | Yes | ||
| Verchères | December 22, 1921 | Adrien Beaudry | Liberal | Jean-Marie Richard | Liberal | Appointed Chairman of the Public Services Commission | Yes | ||
| Témiscouata | December 22, 1921 | Louis-Eugène-Aduire Parrot | Liberal | Eugène Godbout | Liberal | Resignation | Yes | ||
| Montréal–Ste-Marie | December 22, 1921 | Napoléon Séguin | Liberal | Joseph Gauthier | Parti ouvrier | Appointed Governor of Bordeaux Prison | No | ||
| Wolfe | December 15, 1921† | Joseph-Eugène Rhéault | Liberal | Cyrinus Lemieux | Liberal | Death | Yes | ||
| Trois-Rivières | December 15, 1921† | Joseph-Adolphe Tessier | Liberal | Louis-Philippe Mercier | Liberal | Appointed Chairman of the Running Streams Commission | Yes | ||
| Richmond | December 15, 1921† | Walter George Mitchell | Liberal | Jacob Nicol | Liberal | Resignation to contest the 1921 federal election | Yes | ||
| Beauce | December 15, 1921† | Arthur Godbout | Liberal | Joseph-Hughes Fortier | Liberal | Appointed a judge | Yes | ||
| Saint-Maurice | October 19, 1920 | Georges-Isidore Delisle | Liberal | Léonide-Nestor-Arthur Ricard | Liberal | Death | Yes | ||
| Kamouraska | October 19, 1920 | Charles-Adolphe Stein | Liberal | Nérée Morin | Liberal | Resignation to enter federal politics | Yes | ||
| Portneuf | October 11, 1920† | Lomer Gouin | Liberal | Édouard Hamel | Liberal | Appointed to the Legislative Council | Yes | ||
| Terrebonne | September 6, 1919† | Athanase David | Liberal | Athanase David | Liberal | Sought re-election upon appointment as Provincial Secretary | Yes | ||
| Bellechasse | September 6, 1919† | Antonin Galipeault | Liberal | Antonin Galipeault | Liberal | Sought re-election upon appointment as Minister of Public Works and Labour | Yes | ||
| Arthabaska | September 6, 1919† | Joseph-Édouard Perrault | Liberal | Joseph-Édouard Perrault | Liberal | Sought re-election upon appointment as Minister of Colonization, Mines and Fisheries | Yes | ||
† Won by acclamation
14th Legislative Assembly of Quebec 1916–1919
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Napierville | December 27, 1918 | Cyprien Doris | Liberal | Amédée Monet | Liberal | Death | Yes | ||
| Montréal-St-Laurent | December 27, 1918 | John Thomas Finnie | Liberal | Henry Miles | Liberal | Appointed Collector of Provincial Revenue | Yes | ||
| Matane | December 27, 1918 | Donat Caron | Liberal | Octave Fortin | Liberal | Death | Yes | ||
| Ottawa | December 15, 1917† | Ferdinand-Ambroise Gendron | Liberal | Joseph Caron | Liberal | Death | Yes | ||
| Nicolet | December 15, 1917† | Arthur Trahan | Liberal | Joseph-Alcide Savoie | Liberal | Resignation to contest the 1917 federal election | Yes | ||
| Labelle | December 15, 1917† | Hyacinthe-Adélard Fortier | Liberal | Honoré Achim | Liberal | Resignation to contest the 1917 federal election | Yes | ||
| Dorchester | December 15, 1917† | Lucien Cannon | Liberal | Ernest Ouellet | Liberal | Resignation to enter federal politics | Yes | ||
| Montcalm | November 12, 1917† | Joseph-Alcide Dupuis | Liberal | Joseph-Ferdinand Daniel | Liberal | Death | Yes | ||
| Brome | November 12, 1917† | William Frederick Bilas | Liberal | William Robert Oliver | Liberal | Appointed to the Legislative Council | Yes | ||
† Won by acclamation
13th Legislative Assembly of Quebec 1912–1916
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Richmond | November 21, 1914† | Peter Samuel George Mackenzie | Liberal | Walter George Mitchell | Liberal | Death | Yes | ||
| Châteauguay | May 9, 1914† | Honoré Mercier Jr. | Liberal | Honoré Mercier Jr. | Liberal | Sought re-election upon appointment as Minister of Colonization, Mines and Fisheries | Yes | ||
| Bonaventure | May 7, 1914† | John Hall Kelly | Liberal | Joseph-Fabien Bugeaud | Liberal | Appointed to the Legislative Council | Yes | ||
| Trois-Rivières | March 18, 1914 | Joseph-Adolphe Tessier | Liberal | Joseph-Adolphe Tessier | Liberal | Sought re-election upon appointment as Minister of Highways | Yes | ||
| St-Jean | November 10, 1913 | Lomer Gouin | Liberal | Marcellin Robert | Liberal | Chose to sit for Portneuf | Yes | ||
| Huntingdon | November 10, 1913 | William H. Walker | Liberal | Andrew Philps | Liberal | Death | Yes | ||
| Nicolet | June 2, 1913 | Charles Ramsay Devlin | Liberal | Laetare Roy | Liberal | Chose to sit for Témiscamingue | Yes | ||
| Dorchester | June 2, 1913 | Alfred Morissett | Liberal | Lucien Cannon | Liberal | Appointed Clerk of the Executive Council | Yes | ||
| Stanstead | January 16, 1913† | Prosper-Alfred Bissonnet | Liberal | Alfred-Joseph Bissonnett | Liberal | Appointed Collector of Revenue | Yes | ||
| Bagot | January 16, 1913† | Frédéric-Hector Daigneault | Liberal | Joseph-Émery Phaneuf | Liberal | Appointed Inspector of Asylums and Prisons | Yes | ||
| Verchères | October 16, 1912† | Amédée Geoffrion | Liberal | Joseph-Léonide Perron | Liberal | Appointed Recorder of Montreal | Yes | ||
† Won by acclamation
12th Legislative Assembly of Quebec 1908–1912
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Lévis | September 21, 1911 | Jean-Cléophas Blouin | Liberal | Laetare Roy | Liberal | Appointed Sheriff | Yes | ||
| Sherbrooke | August 17, 1911† | Jean-Marie-Joseph-Pantaléon Pelletier | Liberal | Calixte-Émile Therrien | Liberal | Appointed Agent-General in London | Yes | ||
| St. Jean | December 29, 1910 | Gabriel Marchand | Liberal | Marcellin Robert | Liberal | Death | Yes | ||
| Drummond | March 5, 1910 | Joseph Laferté | Liberal | Jules Allard | Liberal | Void Election | Yes | ||
| Argenteuil | March 5, 1910 | William Alexander Weir | Liberal | John Hay | Liberal | Appointed a judge | Yes | ||
| Gaspé | February 17, 1910 | Louis-Joseph Lemieux | Liberal | Joseph-Léonide Perron | Liberal | Appointed Sheriff | Yes | ||
| Richmond | January 27, 1910† | Peter Samuel George Mackenzie | Liberal | Peter Samuel George Mackenzie | Liberal | Sought re-election upon appointment as Provincial Treasurer | Yes | ||
| Kamouraska | December 6, 1909† | Louis-Rodolphe Roy | Liberal | Louis-Auguste Dupuis | Liberal | Appointed a judge | Yes | ||
| L'Islet | November 29, 1909† | Joseph-Édouard Caron | Liberal | Joseph-Édouard Caron | Liberal | Sought re-election upon appointment as Minister of Agriculture | Yes | ||
| St. Sauveur | November 12, 1909 | Charles-Eugene Côté | Liberal | Joseph-Alphonse Langlois | Parti ouvrier | Appointed registrar | No | ||
| Montréal division no. 2 | November 12, 1909 | Henri Bourassa | Ligue nationaliste canadienne | Clement Robillard | Liberal | Chose to sit for St. Hyacinthe | No | ||
| Chambly | November 12, 1909 | Maurice Perrault | Liberal | Lesieur Desaulniers | Liberal | Death | Yes | ||
| Hochelaga | February 2, 1909† | Louis-Jérémie Décarie | Liberal | Louis-Jérémie Décarie | Liberal | Sought re-election upon appointment as Minister of Agriculture | Yes | ||
| Bellechasse | February 2, 1909† | Adélard Turgeon | Liberal | Antonin Galipeault | Liberal | Appointed to the Legislative Council | Yes | ||
| Montréal division no. 6 | December 28, 1908 | Denis Tansey | Conservative | Michael James Walsh | Liberal | Void Election | No | ||
| Laval | December 28, 1908 | Joseph-Wenceslas Lévesque | Liberal | Joseph-Wenceslas Lévesque | Liberal | Void Election | Yes | ||
| Châteauguay | December 28, 1908 | Hospice Dumtremble | Conservative | Honoré Mercier Jr. | Liberal | Void Election | No | ||
| Québec Centre | December 23, 1908 | Amédée Robitaille | Liberal | Eugène Leclerc | Liberal | Appointed a prothonotary | Yes | ||
| Montréal division no. 1 | December 21, 1908† | Georges-Albini Lacombe | Liberal | Napoléon Séguin | Liberal | Appointed registrar | Yes | ||
| Rouville | October 26, 1908 | Alfred Girard | Liberal | Joseph-Edmond Robert | Liberal | Appointed a prothonotary | Yes | ||
| Lac-Saint-Jean | October 14, 1908† | Theodore-Louis-Antoine Broet | Liberal | Jean-Baptiste Carbonneau | Liberal | Death (railroad accident) | Yes | ||
† Won by acclamation
11th Legislative Assembly of Quebec 1904–1908
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Châteauguay | December 16, 1907 | François-Xavier Dupuis | Liberal | Honoré Mercier Jr. | Liberal | Appointed Recorder of the Municipal Court of Montreal | Yes | ||
| Rimouski | November 4, 1907 | Auguste Tessier | Liberal | Pierre-Émile D'Anjou | Liberal | Appointed a judge | Yes | ||
| Nicolet | November 4, 1907 | Alfred Marchildon | Liberal | Charles Ramsey Devlin | Liberal | Resignation pending appointment as a judge | Yes | ||
| Montmorency | November 4, 1907 | Louis-Alexandre Taschereau | Liberal | Louis-Alexandre Taschereau | Liberal | Sought re-election upon appointment as Minister of Public Works and Labor | Yes | ||
| Bellechasse | November 4, 1907 | Adélard Turgeon | Liberal | Adélard Turgeon | Liberal | Sought re-election against Henri Bourassa | Yes | ||
| Montréal division no. 5 | January 24, 1907 | Christopher Benfield Carter | Liberal | Charles Ernest Gault | Conservative | Death | No | ||
| Îles-de-la-Madeleine | November 20, 1906 | Robert Jamieson Leslie | Liberal | Louis-Albin Thériault | Liberal | Death (shipwreck) | Yes | ||
| Iberville | November 5, 1906 | François Gosselin | Liberal | Joseph-Aldéric Benoit | Liberal | Appointed to the Legislative Council | Yes | ||
| L'Assomption | October 29, 1906† | Joseph-Edouard Duhamel | Liberal | Louis-Joseph Gauthier | Liberal | Appointed Inspector of the Registration Office | Yes | ||
| Brome | September 10, 1906† | John Charles McCorkill | Liberal | William Frederick Vilas | Liberal | Appointed a judge | Yes | ||
| Argenteuil | September 10, 1906† | William Alexander Weir | Liberal | William Alexander Weir | Liberal | Sought re-election upon appointment as Minister of Public Works and Labor | Yes | ||
| Napierville | December 14, 1905 | Dominique Monet | Liberal | Cyprien Dorris | Liberal | Appointed Protonotary | Yes | ||
| St. Sauveur | October 14, 1905 | Simon-Napoléon Parent | Liberal | Charles-Eugène Côté | Liberal | Resignation to be appointed Chairman of the Transcontinental Railway Commission | Yes | ||
| Montréal division no. 4 | October 7, 1905† | James Cochrane | Liberal | George Washington Stephens, Jr. | Liberal | Death | Yes | ||
| Terrebonne | July 17, 1905† | Jean Prévost | Liberal | Jean Prévost | Liberal | Sought re-election upon appointment as Minister of Colonization, Mines and Fisheries | Yes | ||
| Yamaska | June 20, 1905† | Jules Allard | Liberal | Guillaume-Édouard Ouellet | Liberal | Appointed to the Legislative Council | Yes | ||
| Montréal division no. 2 | April 10, 1905 | Lomer Gouin | Liberal | Lomer Gouin | Liberal | Sought re-election upon appointment as Premier and Attorney General | Yes | ||
| Rimouski | April 3, 1905† | Auguste Tessier | Liberal | Auguste Tessier | Liberal | Sought re-election upon appointment as Minister of Agriculture | Yes | ||
| Kamouraska | April 3, 1905† | Louis-Rodolphe Roy | Liberal | Louis-Rodolphe Roy | Liberal | Sought re-election upon appointment as Provincial Secretary | Yes | ||
| Bellechasse | April 3, 1905† | Adélard Turgeon | Liberal | Adélard Turgeon | Liberal | Sought re-election upon appointment as Minister of Lands, Mines and Fisheries | Yes | ||
† Won by acclamation
10th Legislative Assembly of Quebec 1900–1904
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Shefford | March 10, 1904 | Tancrède Boucher de Grandbois | Liberal | Auguste Mathieu | Liberal | Resignation | Yes | ||
| Portneuf | March 10, 1904 | Jules Tessier | Liberal | Damase-Épiphane Naud | Conservative | Appointed to the Senate | No | ||
| Maskinongé | March 10, 1904 | Hector Caron | Liberal | Georges Lafontaine | Conservative | Appointed Superintendent of Game and Fisheries | No | ||
| Berthier | March 10, 1904 | Cuthbert-Alphonse Chênevert | Liberal | Joseph Lafontaine | Liberal | Appointed Recorder for the Quebec Court of Appeal | Yes | ||
| Brome | October 29, 1903 | Henry Thomas Duffy | Liberal | John Charles McCorkill | Liberal | Death | Yes | ||
| Stanstead | October 3, 1902 | Moodie Brock Lovell | Liberal | Georges-Henri Saint-Pierre | Conservative | Death | No | ||
| Soulanges | October 3, 1902 | Avila-Gonzague Bourbonnais | Liberal | Arcand-Momer Bissonnette | Conservative | Death | No | ||
| L'Islet | September 26, 1902† | François-Gilbert Miville Dechêne | Liberal | Joseph-Édouard Caron | Liberal | Death | Yes | ||
| Québec Centre | July 11, 1902† | Amédée Robitaille | Liberal | Amédée Robitaille | Liberal | Sought re-election upon appointment as Provincial Secretary | Yes | ||
| Beauce | January 31, 1902 | Henri Sévérin Béland | Liberal | Arthur Godbout | Liberal | Resignation to enter federal politics | Yes | ||
| Vaudreuil | October 31, 1901 | Émery Lalonde | Liberal | Hormidas Pilon | Liberal | Appointed Registar | Yes | ||
| Québec Comté | October 31, 1901 | Némèse Garneau | Liberal | Cyrille-Fraser Delâge | Liberal | Appointed to the Legislative Council | Yes | ||
| Drummond | October 31, 1901 | William John Watts | Liberal | Joseph Laferté | Liberal | Appointed Registrar | Yes | ||
| Lévis | October 24, 1901† | Charles Langelier | Liberal | Jean-Cléophas Blouin | Liberal | Appointed Sheriff | Yes | ||
† Won by acclamation
9th Legislative Assembly of Quebec 1897–1900
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Matane | January 11, 1899 | Louis-Félix Pinault | Liberal | Donat Caron | Liberal | Appointed Deputy Minister of Militia | Yes | ||
| Verchères | December 19, 1898 | Étienne Blanchard | Liberal | Étienne Blanchard | Liberal | Void Election | Yes | ||
| Missisquoi | December 19, 1898 | John Charles McCorkill | Liberal | Cedric Lemoine Cotton | Liberal | Appointed to the Legislative Council | Yes | ||
| Lévis | December 19, 1898 | Nazaire-Nicolas Olivier | Liberal | Charles Langelier | Liberal | Death | Yes | ||
| Beauharnois | December 19, 1898 | Élie-Hercule Bisson | Liberal | Arthur Plante | Conservative | Appointed Prothonotary for Beauharnois | No | ||
| Bonaventure | December 22, 1897 | Victor Gladu | Liberal | Jules Allard | Liberal | Death | Yes | ||
| Lévis | December 22, 1897 | François-Xavier Lemieux | Liberal | Nazaire-Nicolas Olivier | Liberal | Appointed a judge | Yes | ||
| Bonaventure | December 22, 1897 | François-Xavier Lemieux | Liberal | William Henry Clapperton | Liberal | Appointed a judge | Yes | ||
| Yamaska | November 16, 1897 | Albéric-Archie Mondou | Conservative | Victor Gladu | Liberal | Void Election | No | ||
| Brome | June 19, 1897 | Henry Thomas Duffy | Liberal | Henry Thomas Duffy | Liberal | Sought re-election upon appointment as Commissioner of Public Works | Yes | ||
| St. Sauveur | June 12, 1897† | Simon-Napoléon Parent | Liberal | Simon-Napoléon Parent | Liberal | Sought re-election upon appointment as Commissioner of Lands, Forests and Fisheries | Yes | ||
| St. Jean | June 12, 1897† | Félix-Gabriel Marchand | Liberal | Félix-Gabriel Marchand | Liberal | Sought re-election upon appointment as Premier and Provincial Treasurer | Yes | ||
| L'Islet | June 12, 1897† | François-Gilbert Miville Dechêne | Liberal | François-Gilbert Miville Dechêne | Liberal | Sought re-election upon appointment as Commissioner of Agriculture | Yes | ||
| Châteauguay | June 12, 1897† | Joseph-Émery Robidoux | Liberal | Joseph-Émery Robidoux | Liberal | Sought re-election upon appointment as Provincial Secretary | Yes | ||
| Bellechasse | June 12, 1897† | Adélard Turgeon | Liberal | Adélard Turgeon | Liberal | Sought re-election upon appointment as Commissioner of Colonization and Mines | Yes | ||
† Won by acclamation
8th Legislative Assembly of Quebec 1892–1897
† Won by acclamation
7th Legislative Assembly of Quebec 1890–1891
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Vaudreuil | November 22, 1890 | Émery Lalonde | Liberal | Émery Lalonde | Liberal | Void Election | Yes | ||
| Montmorency | July 12, 1890† | Charles Langelier | Liberal | Charles Langelier | Liberal | Sought re-election upon appointment as President of the Executive Council | Yes | ||
† Won by acclamation
6th Legislative Assembly of Quebec 1886–1890
† Won by acclamation
* The Parti National was the official name of the Quebec Liberal Party during this period
5th Legislative Assembly of Quebec 1881–1886
† Won by acclamation
4th Legislative Assembly of Quebec 1878–1881
† Won by acclamation
* Flynn and Pacquet were former Liberals who crossed the floor to topple the Joly government
3rd Legislative Assembly of Quebec 1875–1878
† Won by acclamation
2nd Legislative Assembly of Quebec 1871–1875
† Won by acclamation
1st Legislative Assembly of Quebec 1867–1871
† Won by acclamation