TORONTO - Kathleen Wynne has been sworn in as premier of Ontario, becoming the province's first female leader and Canada's first openly gay premier.

Wynne is replacing Dalton McGuinty, who led the province for nine years.

The ceremony at the Ontario legislature will also see a number of Wynne's leadership rivals and Liberal backbenchers take key cabinet positions.

But the minority Liberals have a tough road ahead and an $12-billion deficit to tackle.

They've been under fire for the politically-motivated cancellations of two gas plants, that will cost taxpayers at least $230 million.

Public school teachers -- their longtime allies -- are furious that the Liberals imposed two-year contracts that cut benefits and froze most of their wages.

There are ten newcomers in Premier Kathleen Wynne's 27-member cabinet, including Guelph's Liz Sandals who takes on the politically sensitive education portfolio.

Other new ministers include:

Peterborough's Jeff Leal in the new Ministry of Rural Affairs

Sudbury's David Orazietti becomes Minister of Natural Resources

David Zimmer of Toronto takes on the stand alone Ministry of Aboriginal Affairs

Rezi Moridi of Richmond Hill is the Minister of Research and Innovation

Ottawa's Yasir Naqvi, the Liberal party president, is also Minister of Labour

Toronto's Michael Coteau becomes Minister of Citizenship and Immigration

Tracy MacCharles of Scarborough is Minister of Consumer Services

Windsor's Teresa Piruzza is Minister of Children and Youth Services

Mario Sergio of Toronto becomes Minister Responsible for Seniors

Liberal cabinet ministers moved to other positions by Wynne include:

Premier Wynne herself as Agriculture Minister

Charles Sousa as Finance Minister

Ottawa's Bob Chiraelli takes on Energy

Brad Duguid leaves energy to become Minister of Training, colleges and Universities

Laurel Broten from education to Minister of Intergovernmental Affairs

Hamilton's Ted McMeekin moves from agriculture to Community and Social Services

Linda Jeffrey takes on Municipal Affairs and Housing and is Chair of cabinet

Eric Hoskins moves to Economic Development, Trade and Employment

Glen Murray becomes Minister of Infrastructure and Minister of Transportation

Michael Gravel moves to Northern Development and Mines

Ministers staying in their same positions include:

Health Minister Deb Matthews, who also becomes Deputy Premier.

Environment Minister Jim Bradley

Attorney General John Gerretsen

Community Safety and Correctional Services Minister Madeleine Meilleur, also responsible for Francophone Affairs

Government services Minister Harinder Takhar

Government House Leader John Milloy

Minister of Tourism, Culture and Sport Michael Chan