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Bonnie Crombie is aiming to become mayor of Mississauga again.
She said in a message to a small group of supporters and Mississauga councillors on Sunday that she’ll register to run on Tuesday.
“Please join me as I officially register as a candidate,” Crombie wrote. “I’d love to have you there as we mark this exciting moment together.”
Crombie, 65, served as Mississauga mayor for a decade, from 2014 to 2024, succeeding longtime mayor Hazel McCallion.
She resigned as mayor in 2024 after winning the Ontario Liberal Party leadership race the previous year.
Crombie lost the election to Doug Ford in February 2025. She stepped down as Liberal leader following a weak leadership review from her party in September.
Crombie had replaced party leader Steven Del Duca in December 2023. She didn’t win a seat in the provincial legislature during the 2025 election last February, losing in a close vote to Silvia Gualtieri of the Conservatives.
“I am looking forward to spending more time with my family, including welcoming my first grandchild, while giving the party the space it needs to move forward with new leadership,” Crombie said in announcing her resignation at the time.
Ottawa South MPP John Fraser, who succeeded former premier Dalton McGuinty as the riding’s representative at Queen’s Park in 2013, was nominated by the Ontario Liberal caucus to fill in as their temporary leader for a third time after Crombie’s resignation.
As of Sunday, six people had registered to run for Mississauga mayor, including incumbent Carolyn Parrish, and city councillors Alvin Tedjo and Dipika Damerla.
The next municipal election is Oct. 26.
The deadline to file a nomination to be a council or school trustee candidate is Friday, Aug. 21 at 2 p.m.
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