Date | District | Name | Party before | Party after | Reason |
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March 23, 2016 | Medicine Hat—Cardston—Warner | Jim Hillyer | | Conservative | | Vacant | Died of an apparent heart attack [2] |
May 31, 2016 | Nunavut | Hunter Tootoo | | Liberal | | Independent | Left Cabinet and the Liberal caucus to undergo addiction treatment [3] |
August 16, 2016 | Ottawa—Vanier | Mauril Bélanger | | Liberal | | Vacant | Died of amyotrophic lateral sclerosis [4] |
August 26, 2016 | Calgary Heritage | Stephen Harper | | Conservative | | Vacant | Resigned [5] |
September 23, 2016 | Calgary Midnapore | Jason Kenney | | Conservative | | Vacant | Resigned to enter provincial politics [6] |
October 24, 2016 | Medicine Hat—Cardston—Warner | Glen Motz | | Vacant | | Conservative | Elected as a member of parliament in a by-election |
January 31, 2017 | Saint-Laurent | Stéphane Dion | | Liberal | | Vacant | Resigned to enter diplomatic post [7] |
January 31, 2017 | Markham—Thornhill | John McCallum | | Liberal | | Vacant | Resigned to enter diplomatic post [7] |
April 3, 2017 | Calgary Heritage | Bob Benzen | | Vacant | | Conservative | Elected in a by-election |
Ottawa—Vanier | Mona Fortier | | Liberal |
Calgary Midnapore | Stephanie Kusie | | Conservative |
Saint-Laurent | Emmanuella Lambropoulos | | Liberal |
Markham—Thornhill | Mary Ng | | Liberal |
July 4, 2017 | Sturgeon River—Parkland | Rona Ambrose | | Conservative | | Vacant | Resigned to join the Wilson Center as a visiting scholar [8] |
August 9, 2017 | Lac-Saint-Jean | Denis Lebel | | Conservative | | Vacant | Resigned to accept a position in the private sector [9] |
August 31, 2017 | Calgary Skyview | Darshan Kang | | Liberal | | Independent | Resigned from the Liberal caucus amid allegations of sexual assault [10] |
September 14, 2017 | Scarborough—Agincourt | Arnold Chan | | Liberal | | Vacant | Died of cancer [11] |
September 29, 2017 | South Surrey—White Rock | Dianne Watts | | Conservative | | Vacant | Resigned to seek the leadership of the British Columbia Liberal Party [12] |
September 30, 2017 | Bonavista—Burin—Trinity | Judy Foote | | Liberal | | Vacant | Resigned due to illness in her family [13] |
October 2, 2017 | Battlefords—Lloydminster | Gerry Ritz | | Conservative | | Vacant | Resigned [14] |
October 23, 2017 | Sturgeon River—Parkland | Dane Lloyd | | Vacant | | Conservative | Elected in a by-election |
Lac-Saint-Jean | Richard Hébert | | Liberal |
December 1, 2017 | Chicoutimi—Le Fjord | Denis Lemieux | | Liberal | | Vacant | Resigned [15] |
December 11, 2017 | Bonavista—Burin—Trinity | Churence Rogers | | Vacant | | Liberal | Elected as a member of parliament in a by-election |
Scarborough—Agincourt | Jean Yip | | Liberal |
Battlefords—Lloydminster | Rosemarie Falk | | Conservative |
South Surrey—White Rock | Gordie Hogg | | Liberal |
February 28, 2018 | Terrebonne | Michel Boudrias | | Bloc Québécois | | Québec debout [n 1] | Resigned from the Bloc Québécois caucus citing conflict with party leader Martine Ouellet [16] |
Rivière-du-Nord | Rhéal Fortin |
Mirabel | Simon Marcil |
Repentigny | Monique Pauzé |
Bécancour—Nicolet—Saurel | Louis Plamondon |
Joliette | Gabriel Ste-Marie |
Montcalm | Luc Thériault |
May 2, 2018 | Leeds—Grenville—Thousand Islands and Rideau Lakes | Gord Brown | | Conservative | | Vacant | Died of a heart attack [17] |
May 3, 2018 | Regina—Lewvan | Erin Weir | | New Democratic | | Independent | Expelled from NDP caucus following investigation into allegations of sexual misconduct, then changed affiliation to CCF [18] [19] |
May 11, 2018 | | Independent | | CCF |
June 6, 2018 | Terrebonne | Michel Boudrias | | Québec debout | | Bloc Québécois | Rejoined the Bloc Québécois caucus following the resignation of party leader Martine Ouellet [20] |
Mirabel | Simon Marcil |
June 18, 2018 | Chicoutimi—Le Fjord | Richard Martel | | Vacant | | Conservative | Elected as a member of parliament in a by-election [21] |
August 3, 2018 | Outremont | Thomas Mulcair | | New Democratic | | Vacant | Resigned [22] |
August 23, 2018 | Beauce | Maxime Bernier | | Conservative | | Independent | Resigned from the Conservative caucus, and changed affiliation to newly created People's Party [23] [24] |
September 14, 2018 | | Independent | | People's |
September 14, 2018 | Burnaby South | Kennedy Stewart | | New Democratic | | Vacant | Resigned to run for Mayor of Vancouver in the 2018 Vancouver municipal election [25] |
September 17, 2018 | Rivière-du-Nord | Rhéal Fortin | | Québec debout | | Bloc Québécois | Rejoined the Bloc Québécois caucus [26] |
Repentigny | Monique Pauzé |
Bécancour—Nicolet—Saurel | Louis Plamondon |
Joliette | Gabriel Ste-Marie |
Montcalm | Luc Thériault |
September 17, 2018 | Aurora—Oak Ridges—Richmond Hill | Leona Alleslev | | Liberal | | Conservative | Changed affiliation [27] |
September 30, 2018 | York—Simcoe | Peter Van Loan | | Conservative | | Vacant | Resigned [28] |
November 7, 2018 | Parry Sound-Muskoka | Tony Clement | | Conservative | | Independent | Resigned from the Conservative caucus amid sexting scandal [29] |
November 30, 2018 | Brampton East | Raj Grewal | | Liberal | | Independent | Resigned from the Liberal caucus due to controversy around his problem gambling and alleged ethical breaches [30] |
December 3, 2018 | Leeds—Grenville—Thousand Islands and Rideau Lakes | Michael Barrett | | Vacant | | Conservative | Elected as a member of parliament in a by-election |
January 2, 2019 | Nanaimo—Ladysmith | Sheila Malcolmson | | New Democratic | | Vacant | Resigned to enter provincial politics [31] |
January 29, 2019 | Saint-Léonard—Saint-Michel | Nicola Di Iorio | | Liberal | | Vacant | Resigned [32] |
February 10, 2019 | Kings—Hants | Scott Brison | | Liberal | | Vacant | Resigned [33] |
February 25, 2019 | Outremont | Rachel Bendayan | | Vacant | | Liberal | Elected as a member of parliament in a by-election |
York—Simcoe | Scot Davidson | | Conservative |
Burnaby South | Jagmeet Singh | | New Democratic |
March 20, 2019 | Whitby | Celina Caesar-Chavannes | | Liberal | | Independent | Resigned from caucus [34] |
April 2, 2019 | Markham—Stouffville | Jane Philpott | | Liberal | | Independent | Removed from the Liberal caucus [35] |
Vancouver Granville | Jody Wilson-Raybould |
May 6, 2019 | Nanaimo—Ladysmith | Paul Manly | | Vacant | | Green | Elected as a member of parliament in a by-election |
June 20, 2019 | Langley—Aldergrove | Mark Warawa | | Conservative | | Vacant | Died of cancer [36] |
August 2, 2019 | Calgary Forest Lawn | Deepak Obhrai | | Conservative | | Vacant | Died of cancer [37] |
August 16, 2019 | Longueuil—Saint-Hubert | Pierre Nantel | | New Democratic | | Independent | Expelled from NDP caucus following revelations that he had been in private talks to run for another political party in the next general election [38] |
September 1, 2019 | Victoria | Murray Rankin | | New Democratic | | Vacant | Resigned |