In an exclusive interview Thursday with CTV Toronto's Paul Bliss, McGuinty hedged about his future when Bliss asked him, "If you win in October, are you going to serve out your four years?"

The premier responded by saying, "I'm not going to speculate as to how long, but I can say that I am absolutely committed to seeing the policies through that we've already put in place."

McGuinty also said he is committed to "ensuring that we also take the next step forward to ensure that we have the strongest possible economy that supports our schools and our hospitals and good jobs for our kids."

The 55-year-old McGuinty was first elected to represent Ottawa South as a Liberal MPP in 1990.

He became party leader in 1996, but lost his first election campaign to then-premier Mike Harris's Progressive Conservatives in 1999.

McGuinty led his Liberals to a majority government in 2003 against then-Tory leader Ernie Eves. He held power in 2007, defeating the Tories, who were led by John Tory.

The Liberals now dominate the legislature with 72 seats, while the Progressive Conservatives have 25 and the NDP have 10, but winning a third majority government has been a very difficult task in the past for Ontario premiers. Continued...