2026 Ontario Liberal Party leadership election
November 21, 2026
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| Date | November 21, 2026 |
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| Convention | TBD |
| Resigning leader | Bonnie Crombie |
| Won by | TBD |
| Ballots | TBD |
| Candidates | TBD |
| Entrance fee | $150,000 |
| Spending limit | $1,000,000 |
The 2026 Ontario Liberal Party leadership election is an ongoing leadership contest of the Ontario Liberal Party to be concluded on November 21, 2026 through which the party will elect its twenty-fifth permanent leader. The contest was triggered by the resignation of Bonnie Crombie, the incumbent party leader since December 2023, and is the party's third leadership contest since it was voted out of power in the 2018 election.
Voting for the contest will be conducted from November 9 to 20, and the new leader will be revealed on November 21, 2026.