Prime Minister Mark Carney calls April 13 byelections in three ridings after Liberal MP resignations and a Supreme Court ruling voiding a 2025 win in Terrebonne.

Prime Minister Mark Carney has called byelections on April 13 in three ridings—Terrebonne, Scarborough Southwest, and University-Rosedale—following vacancies from the resignations of former Liberal MPs and a Supreme Court decision to void a narrow 2025 Liberal victory in Terrebonne due to an uncounted mail-in ballot. The outcome could determine whether the Liberals achieve a one-seat majority, as they currently hold 169 of 338 seats. The most competitive race is in Terrebonne, where Liberal Tatiana Auguste and Bloc Québécois’s Nathalie Sinclair-Desgagné are running again. In Toronto, the Liberals are fielding candidates in both ridings, while the NDP has selected Serena Purdy and Doly Begum, and the Conservatives have not yet named candidates. Advance voting runs April 3–6, with mail-in ballot requests due by April 7.