By-elections to the 44th Canadian Parliament

By-elections to the 44th Canadian Parliament may be held to fill vacancies in the House of Commons of Canada between the 2021 federal election and the 45th federal election. The 44th Canadian Parliament has existed since 2021 with the membership of its House of Commons having been determined by the results of the Canadian federal election held on September 20, 2021. The Liberal Party of Canada has a minority government during this Parliament, supported by the New Democratic Party in a confidence-and-supply agreement.[1]

No by-elections have been held during the 44th Parliament thus far, although the resignation of Sven Spengemann (Liberal, Mississauga—Lakeshore), to take on a role at the United Nations, will trigger a by-election.[2]

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.[3]


By-election Date Incumbent Party Winner Party Cause Retained
Mississauga—Lakeshore On or before January 9, 2023 (2023-01-09)[a] Sven Spengemann Liberal Resigned to accept a position with the United Nations.[2]

Upcoming by-elections


The riding of Mississauga—Lakeshore was vacated on May 27, 2022 following the resignation of Liberal MP Sven Spengemann to accept a position with the United Nations.[2] Spengemann had represented the riding since 2015, when he defeated Conservative incumbent Stella Ambler.

Former MPP Charles Sousa, who represented the area provincially from 2007 to 2018 and served as the Ontario Minister of Finance from 2013 to 2018, is considering running for the Liberal nomination, while Michael Ras, who finished second to Spengemann in 2021, is considering running for the Conservative nomination.[5]


  1. ^ The warrant to the Chief Electoral Officer for the issue of a writ of election to fill the vacancy occurred on May 30, 2022, the date of the by-election must be announced no later than November 26, 2022, the by-election period must last no more than 50 days, and the by-election must be held on a Monday. Therefore, the latest possible date that the Mississauga–Lakeshore by-election can be held is Monday, January 9, 2023. [4]


  1. ^ "Q&A: The NDP and Liberals have a confidence and supply agreement. So what is it?". The Toronto Star. 2022-03-22. ISSN 0319-0781. Retrieved 2022-05-19.
  2. ^ a b c Tumilty, Ryan (May 18, 2022). "Liberal MP Sven Spengemann to resign from GTA seat almost eight months after re-election". Montreal Gazette. Retrieved May 18, 2022.
  3. ^ "Journalists vying for seat in Commons shows politics changing: Spector". The Hill Times. August 12, 2013. Retrieved August 4, 2020.
  4. ^ "A Federal Seat is Vacant in Mississauga–Lakeshore". Elections Canada. June 3, 2022. Retrieved June 8, 2022.
  5. ^ Rana, Abbas (June 3, 2022). "Former Ontario finance minister Sousa not ruling out run for federal Liberal nomination in coveted Mississauga-Lakeshore riding". The Hill Times. Retrieved June 3, 2022.