The 45th Ontario general election is tentatively scheduled to be held on June 7, 2029.

The Far North Electoral Boundaries Commission, appointed in 2016,[3] recommended the creation of the additional districts of Kiiwetinoong and Mushkegowuk—James Bay, carved out from the existing Kenora—Rainy River and Timmins—James Bay ridings, which accordingly raised the total number of seats to 124.

[4][5] This was implemented through the Representation Statute Law Amendment Act, 2017.

[6] With the 2022 Canadian federal electoral redistribution, Ontario was allotted 1 additional seat in the House of Commons.

On August 1, 2024, Premier Ford announced that Ontario would break with recent tradition and not adopt the federal electoral boundary changes for the 2025 provincial election.