Dec. 7 byelections: who is running in all six ridings

Voters in six federal ridings in Ontario, Quebec and Saskatchewan go to the polls on Monday, Dec. 7, and the candidate lists are now largely set, with a former Desjardins Group chief executive, a former Brantford mayor and the mayor of Yorkton among those running.

Prime Minister Mark Carney called the byelections on Nov. 1. Nominations close Monday, Nov. 16, and Elections Canada says it will publish the complete list of confirmed candidates on Wednesday, Nov. 18, so the lists below, current as of Nov. 13, may still change. Candidates marked confirmed appear on Elections Canada’s candidate lists. Others have been announced by their parties but are not yet on the agency’s list.

Brantford–Brant South (Ont.) became vacant on Sept. 18 when Conservative MP Larry Brock resigned to return to the Brantford Crown attorney’s office, CTV News reported. Brock won the seat in 2025 with 52.4 per cent of the vote to 41.1 per cent for Liberal Joy O’Donnell, a margin of 7,469 votes, according to Elections Canada. Confirmed candidates are former Brantford mayor Kevin Davis for the Conservatives, whom Pierre Poilievre appointed in September without a nomination contest; O’Donnell for the Liberals, a certified financial planner and president of the Chamber of Commerce Brantford-Brant, who is running again; Brad Ward for the NDP, a former Brantford city councillor; pastor Dave Carrol as an Independent, a longtime Conservative whom Brock had endorsed before the party appointed Davis; Dirk Byers for the Christian Heritage Party; and Independents Leslie Bory and Mike Clancy. The Green Party has announced Kathryn Kissinger. The People’s Party had not named a candidate.

Laurier–Sainte-Marie (Que.) was held by former environment minister Steven Guilbeault, who left in the summer after a public disagreement with Carney over environment policy, The Canadian Press reported. He won it in 2025 with 52.1 per cent, 33 points ahead of the NDP. Confirmed candidates are Guy Cormier for the Liberals, the former president and CEO of Desjardins Group; epidemiologist and community activist Nimâ Machouf for the NDP, who placed second in 2025; Zumretay Arkin for the Bloc Québécois, a human rights activist and former vice-president of the World Uyghur Congress; Eugène Duplessis for the People’s Party; Chinook Blais-Leduc for the Rhinoceros Party; and Independent Jocelyn Simon Daigle. The Conservatives have announced Mathieu Fournier, their 2025 candidate, CBC News reported. The Greens had not named a candidate.

Rosemont–La Petite-Patrie (Que.) opened up when NDP MP Alexandre Boulerice resigned in August ahead of a successful provincial run for Québec solidaire. It was the only seat the NDP won east of Manitoba in 2025, when Boulerice took 41 per cent to 31.6 per cent for Liberal Jean-Sébastien Vallée. Confirmed candidates are Vallée for the Liberals, a human rights advocate running again; Pierre Céré for the NDP, a Quebec activist and former spokesperson for the Conseil national des chômeurs et chômeuses; Alexandre Curzi for the Bloc Québécois, director general of the Union des artistes; Osmar Llanos Martinez for the Conservatives; François Tessier for the Rhinoceros Party; and Philippe Tessier with no affiliation. The Greens had not named a candidate.

Saint-Hyacinthe–Bagot–Acton (Que.) was held by Simon-Pierre Savard-Tremblay, who left the Bloc caucus in June and won a provincial seat for the Parti Québécois. He took the riding for the Bloc in 2025 with 43.9 per cent to 33.6 per cent for the Liberals. Confirmed candidates are Caroline Émond for the Bloc, a former director general of the International Dairy Federation and former Quebec delegate general in Brussels; Chantal Soucy for the Liberals, a former Coalition Avenir Québec member of the National Assembly who served eight years and did not run again this fall; and former Montreal Alouettes player Luc Brodeur-Jourdain for the Conservatives. The Green Party has confirmed Martin Grenier, its 2025 candidate, and CBC News has reported Mathieu Boisvert as the NDP candidate.

Scarborough North (Ont.) became vacant when Liberal MP Shaun Chen left in August, citing ongoing medical issues from a 2025 vehicle crash. He held the seat in 2025 with 63 per cent of the vote. Confirmed candidates are accountant and former Toronto District School Board trustee James Li for the Liberals and Dameon Halstead for the Conservatives. The Green Party has announced Victoria (Vicki) Jewt. The NDP and People’s Party had not named candidates.

Yorkton–Melville (Sask.) opened up when Conservative Cathay Wagantall, the MP since 2015, resigned at the end of August. Conservatives and their predecessor parties have held the area for more than 30 years, and Wagantall won 77.5 per cent of the vote in 2025. Confirmed candidates are Nelson Pohl for the Conservatives, a farmer who owns a furnace cleaning company; Yorkton Mayor Aaron Kienle for the Liberals; Tammy Bobyk-Jacquemart for the NDP, who was raised in Canora and has more than 20 years in health care, CJWW reported; Valerie Brooks for the Greens, who also ran in 2025; and Dionne Fehler for the People’s Party. The Yorkton Chamber of Commerce will host an all-candidates forum at 7 p.m. on Tuesday, Nov. 24, at the Gallagher Centre.

Advance polls run Friday, Nov. 27, to Monday, Nov. 30, from 9 a.m. to 9 p.m. local time, according to Elections Canada. On Dec. 7, polls are open from 9:30 a.m. to 9:30 p.m. Eastern time in the Ontario and Quebec ridings and from 8:30 a.m. to 8:30 p.m. in Yorkton–Melville. Voters can also vote at their local Elections Canada office, or apply to vote by mail, until 6 p.m. on Tuesday, Dec. 1. To vote, you must be a Canadian citizen, 18 or older on election day, and have lived in the riding since Nov. 1, and you must show proof of identity and address. Polling stations can be found by postal code at elections.ca or by calling 1-800-463-6868.

Candidate details come from Elections Canada’s candidate lists and 2025 official results, The Canadian Press, CBC News, Radio-Canada, CTV News and the parties. For background on the vacancies, see our earlier story on the Prime Minister’s announcement. Canada News Media will update this list after nominations close.

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