Sometime before July 2, 2023, a by-election will be announced for the seat in the House of Commons representing Calgary Heritage in the province of Alberta.

On January 3, the Chief Electoral Officer of Canada, Stéphane Perrault, received official notice from the Speaker of the House of Commons that the seat for Calgary Heritage (Alberta) became vacant following the resignation of Bob Benzen. Benzen officially resigned from his seat in the House of Commons on December 31, 2022, in order to return to private life, according to CTV news.

Under the law, the by-election date must be announced between January 14 and July 2, 2023, and will signal the start of the by-election period. According to Elections Canada, the earliest date the by-election can be held is February 20, 2023.

On October 21, 2019, the fixed date for Canadian federal elections, the election for the now-vacant seat in the House of Commons representing Calgary Forest Lawn (Alberta) will be held.

Because this vacancy occurred less than nine months before October’s fixed-date general election, no by-election will be held.

On August 15, the Chief Electoral Officer of Canada, Stéphane Perrault, received official notice from the Speaker of the House of Commons that the seat for Calgary Forest Lawn (Alberta) became vacant.

The vacancy came following the death of MP Deepak Obhrai on August 2.

Obhrai had been the longest-serving Conservative member of Parliament.

On May 6, a by-election will be held for the electoral district of Nanaimo–Ladysmith (British Columbia) to fill a vacancy in the Canadian House of Commons.

On January 7, the Chief Electoral Officer of Canada, Stéphane Perrault, had received official notice from the Speaker of the House of Commons that the seat became vacant following the resignation of Sheila Malcolmson, who resigned on January 2 to run in a provincial byelection.

On March 24, Elections Canada declared the May election date and announced the opening of its local office in Nanaimo-Ladysmith.

On October 21, 2019, the fixed date for federal elections, the election for the now-vacant seat in the House of Commons representing Kings-Hants (Nova Scotia) will be held.

Because this vacancy occurred less than nine months before October’s fixed-date general election, no by-election will be held.

On February 20, the Chief Electoral Officer of Canada, Stéphane Perrault, received official notice from the Speaker of the House of Commons that the seat for Kings–Hants (Nova Scotia) became vacant following the resignation of Scott A. Brison, who left office on February 10 to take a position working for the Bank of Montreal.

Sometime before July 6, 2019, a by-election will be announced for the seat in the House of Commons representing Nanaimo–Ladysmith in the province of British Columbia.

On January 7, the Chief Electoral Officer of Canada, Stéphane Perrault, received official notice from the Speaker of the House of Commons that the seat for Nanaimo–Ladysmith (British Columbia) became vacant following the resignation of Sheila Malcolmson, who resigned on January 2 to run in a provincial by-election.

Under the law, the by-election date must be announced between January 18 and July 6, 2019, and will signal the start of the by-election period.

According to Elections Canada, the earliest date the by-election can be held is February 25, 2019.

Sometime before March 30, 2019, a by-election will be announced for the seat in the House of Commons representing York–Simcoe in the province of Ontario.

On October 2, the Chief Electoral Officer of Canada, Stéphane Perrault, received official notice from the Speaker of the House of Commons that the seat for York–Simcoe (Ontario) became vacant following the resignation of Peter Van Loan, who resigned on September 30. Van Loan plans to return to the practice of law, according to Bradford Today.

Under the law, the by-election date must be announced between October 12, 2018, and March 30, 2019, and will signal the start of the by-election period. According to Elections Canada, the earliest date the by-election can be held is November 19, 2018.

Sometime before March 18, 2019, a by-election will be announced for the seat in the House of Commons representing Burnaby South in the province of British Columbia.

On September 17, the Chief Electoral Officer of Canada, Stéphane Perrault, received official notice from the Speaker of the House of Commons that the seat for Burnaby South (British Columbia) became vacant following the resignation of Kennedy Stewart, who resigned on September 14 in order to run for mayor of Vancouver.

Under the law, the by-election date must be announced between September 28, 2018, and March 18, 2019, and will signal the start of the by-election period.

According to Elections Canada, the earliest date the by-election can be held is November 5, 2018.

Sometime before January 30, 2019, a by-election will be announced for the seat in the House of Commons representing Outremont in the province of Quebec.

On August 3, the Chief Electoral Officer of Canada, Stéphane Perrault, received official notice from the Speaker of the House of Commons that the seat for Outremont (Quebec) became vacant following the resignation of Tom Mulcair, who left office to teach at the at Universite de Montreal and to become a regularly scheduled political commentator at CJAD radio and CTV news.

Under the law, the by-election date must be announced between August 14, 2018, and January 30, 2019, and will signal the start of the by-election period. According to Elections Canada, the earliest date the by-election can be held is September 24, 2018.

On May 7, Elections Canada announced a by-election for the House of Commons will be held for the seat for Leeds–Grenville–Thousand Islands and Rideau Lakes (Ontario).

The seat was held by MP Gordon Brown, who died unexpectedly of a heart attack on May 2.

On May 3, Stéphane Perrault, Acting Chief Electoral Officer of Canada, received official notice from the Speaker of the House of Commons that the seat was vacant.

Canadian law requires the date of this by-election be announced between May 14, 2018, and October 30, 2018, which will signal the start of the by-election period.

On December 5, Elections Canada announced a by-election for the House of Commons will be held for the seat for Chicoutimi–Le Fjord (Quebec). The seat was vacated by MP Denis Lemieux, who announced his plan to resign in November for family reasons.

On December 4, Stéphane Perrault, Acting Chief Electoral Officer of Canada, received official notice from the Speaker of the House of Commons that the seat was vacant. Canadian law requires the date of this by-election be announced between December 15, 2017, and June 2, 2018, which will signal the start of the by-election period.