On February 25, three by-elections will be held to fill vacancies in the Canadian House of Commons. The by-elections will take place for the electoral districts of Burnaby South (British Columbia), Outremont (Quebec) and York–Simcoe (Ontario).

The seat for Burnaby South (British Coumbia) became vacant following the resignation of Kennedy Stewart, who resigned on September 14 in order to run for mayor of Vancouver.

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.

The seat for York–Simcoe (Ontario) became vacant following the resignation of Peter Van Loan, who resigned on September 30 to return to the practice of law.