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Map of relevant by-election results by riding. Ridings shaded in gray did not hold a by-election. |
By-elections to the 42nd Canadian Parliament were held to fill vacancies in the House of Commons of Canada between the 2015 and the 2019 federal elections. The 42nd Canadian Parliament existed from 2015 to 2019 with the membership of its House of Commons having been determined by the results of the Canadian federal election held on October 19, 2015. The Liberal Party of Canada had a majority government during this Parliament.
A by-election was held on October 24, 2016, following the death of Jim Hillyer (Conservative, Medicine Hat—Cardston—Warner) on March 23, 2016.[1]
Five by-elections were held on April 3, 2017: One following the death of Mauril Bélanger (Liberal, Ottawa—Vanier) on August 16, 2016.[2] A second was held due to the former prime minister Stephen Harper's (Conservative, Calgary Heritage) resignation from parliament on August 26,[3] A third was held due to the resignation of Jason Kenney (Conservative, Calgary Midnapore), on September 23,[4] to enter provincial politics and pursue the leadership of the Alberta PCs.[5][6] Two others were called for Markham—Thornhill and Saint-Laurent, respectively following the appointments of John McCallum and Stéphane Dion (both Liberal) as Ambassadors to China and Germany, respectively.[7][8] They officially resigned their seats in the House of Commons on January 31, 2017.[9][10]
Two further by-elections were held on October 23, 2017, in Sturgeon River—Parkland and Lac-Saint-Jean, following the resignations of former interim Conservative leader Rona Ambrose on July 4, 2017, and former Conservative deputy leader Denis Lebel on August 9.[11][12][13]
Four by-elections were held on December 11, 2017,[14] due to the death on September 14, 2017, of Arnold Chan (Liberal, Scarborough—Agincourt),[15] the resignations effective September 30, of former cabinet minister Judy Foote (Liberal, Bonavista—Burin—Trinity),[16] and Dianne Watts (Conservative, South Surrey—White Rock) to enter provincial politics and pursue the leadership of the British Columbia Liberal Party,[17] and in Battlefords—Lloydminster due to the resignation of Conservative MP Gerry Ritz on October 2.[18]
One by-election was held on June 18, 2018 following the resignation of Denis Lemieux (Liberal, Chicoutimi—Le Fjord)[19] on December 1, 2017.[20][21]
One by-election was held on December 3, 2018 following the death of Gord Brown (Conservative, Leeds—Grenville—Thousand Islands and Rideau Lakes) on May 2, 2018.[22]
Three additional by-elections were held on February 25, 2019 due to the announcement by former New Democratic Party leader Tom Mulcair of his resignation of the seat of Outremont on August 3, 2018 to accept an academic position,[23][24] the announcement by NDP MP Kennedy Stewart of his resignation of the seat of Burnaby South on September 17 to run for Mayor of Vancouver,[25][26] and the announcement by Conservative MP Peter Van Loan of his resignation of the seat of York—Simcoe on September 30, 2018.[27][28]
A further vacancy occurred due to the resignation on January 2, 2019, of Sheila Malcolmson (NDP, Nanaimo—Ladysmith) to enter provincial politics.[29] However, the government announced that no federal by-election would be called in the riding before the provincial by-election held on January 30, 2019, in order to avoid an "overlap".[30]
The writ for a by-election must be dropped no sooner than 11 days and no later than 180 days after the Chief Electoral Officer is officially notified of a vacancy via a warrant issued by the Speaker. Under the Canada Elections Act, the minimum length of a campaign is 36 days between dropping the writ and election day.[31]
Due to the passage of Bill C-76 which made an amendment[32] to the Parliament of Canada Act that took effect January 19, 2019[33] no writ for the election of a member of the House shall be issued if the vacancy occurs less than nine months before the date fixed under the Canada Elections Act for the next general election. As a result, the cut-off date for a vacancy to cause a by-election for the 42nd Parliament was January 21, 2019. Any vacancies that occurred after that date were not filled until the next federal election on October 21, 2019.[34][35]
Nicola Di Iorio (Liberal, Saint-Léonard—Saint-Michel) resigned on January 29, 2019,[35][36][37][38][39] eight days after the deadline for a vacancy to occur and cause a by-election. Raj Grewal (Brampton East) had announced on November 23, 2018 that he intended to resign his seat due to a gambling addiction but later announced, on November 30, that he was resigning from the Liberal caucus but would keep his seat as an Independent for the time being.[40] On January 25, 2019, he announced that he would keep his seat in parliament until the next federal election in October.[41]
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