She was a member of the Legislative Assembly of Ontario from 2003 until 2007, and served in the cabinet in the government of Premier Dalton McGuinty.
[5] Chambers was a member of the Rouge Valley Health System, serving as Vice-Chair for a time.
[7] She helped to author a University policy that no student would be prevented from studying at Toronto for inadequate financial resources.
The Liberals won the provincial election, and Chambers was appointed Minister of Training, Colleges and Universities on October 23, 2003.
[11] On May 17, 2015, she spoke in support of the nomination of NDP candidate Adaoma Patterson for Brampton West.