A by-election will be held in the provincial riding of Scarborough Southwest in Ontario, Canada, following the resignation of incumbent NDP MPP Doly Begum on February 3, 2026. Premier Ford is not expected to call the by-election until the summer; the writ for the by-election must be issued by August 3, 2026 with the date of the by-election being a Thursday no later than 36 days after the writ is issued.
On February 2, 2026, Prime Minister Mark Carney announced that Bill Blair, a former cabinet minister, would resign as member of Parliament for the federal riding of Scarborough Southwest to accept an appointment as CanadaâÂÂs High Commissioner to the United Kingdom. Blair had previously served as minister of public safety and minister of national defence.
On February 3, the Liberal Party of Canada announced Doly Begum as their candidate for the resulting by-election. Begum was serving as member of Provincial Parliament for the provincial riding of Scarborough Southwest and the Deputy Leader of the ONDP. She resigned from her seat on the same day as well as her membership in the ONDP.