Premier-designate Kathleen Wynne turned to her leadership rivals and some Liberal backbenchers for key positions in her new cabinet, which will be sworn-in Monday afternoon.

Sources said leadership contender Charles Sousa, a former banker, will become Ontario's new finance minister, taking over from Dwight Duncan, who will officially resign his Windsor seat on Thursday.

Photo: Contributed - CTV

Premier-designate Kathleen Wynne will be sworn-in Monday afternoon

Nelson Wiseman, a political science professor at the University of Toronto, had expected Sousa would become finance minister after he dropped out following the leadership convention's second ballot to support Wynne.

"Sousa shrewdly sort of positioned himself for that (portfolio), and he really raised his profile in this leadership race," said Wiseman.

The sources said former school board trustee Liz Sandals will become Ontario's education minister, tasked with trying to rebuild the Liberals' relations with teachers who are angry over having contracts imposed on them.

Sandals, who served as president of the Ontario School Boards Association before being first elected in Guelph in 2003, will take over as education minister from Laurel Broten, who had become a focal point of teachers' frustration with the government.

Broten is expected to remain in cabinet as minister of intergovernmental affairs.

The sources said former Ottawa mayor Bob Chiarelli will take over the Liberals' other problem plagued portfolio, becoming energy minister to replace Chris Bentley, who will officially resign his London seat on Thursday.

Chiarelli will be on the political hot seat immediately when the legislature resumes next week, with the Opposition demanding new hearings into the Liberals' decisions to cancel gas plants in Oakville and Mississauga, at a cost of at least $230 million.

Former Winnipeg mayor Glen Murray, who dropped out of the Liberal leadership race just before the convention to support Wynne, will become minister of transportation and infrastructure, said the sources.

Several sources told The Canadian Press that Deb Matthews, who co-chaired Wynne's leadership bid, will stay on as health minister and could also become deputy premier.