By-elections to the 15th Canadian Parliament were held to elect members of the House of Commons of Canada between the 1925 federal election and the 1926 federal election. Initially the Liberal Party of Canada and the Progressive Party of Canada formed a coalition government for the 15th Canadian Parliament, following the King–Byng Affair the Conservative Party of Canada was given a minority government, which dissolved quickly.
The list includes a Ministerial by-election which occurred due to the requirement that Members of Parliament recontest their seats upon being appointed to Cabinet. These by-elections were almost always uncontested. This requirement was abolished in 1931. By-election Date Incumbent Party Winner Party Cause RetainedMiddlesex WestMarch 29, 1926 John Campbell Elliott LiberalJohn Campbell Elliott LiberalRecontested upon appointment as Minister of Labour YesReginaMarch 16, 1926 Francis Nicholson Darke LiberalCharles Avery Dunning LiberalResignation to provide a seat for Dunning YesPrince AlbertFebruary 15, 1926 Charles McDonald LiberalWilliam Lyon Mackenzie King LiberalResignation to provide a seat for Mackenzie KingYesBagotDecember 7, 1925 Joseph Edmond Marcile LiberalGeorges Dorèze Morin LiberalDeath Yes
Sources Parliament of Canada–Elected in By-Elections
See also List of federal by-elections in Canada