Ontario's Liberals are backing embattled Premier Dalton McGuinty's leadership, despite disappointing electoral results and a looming battle with former union allies who are furious over new legislation to freeze wages.

Mr. McGuinty received the endorsement of 85.8 per cent of delegates who voted in a leadership review at the party's convention in Ottawa on Saturday. The review was automatically triggered after last October's election that reduced the Liberals to a minority government.

It was better than Progressive Conservative Leader Tim Hudak, who received an endorsement of 78.7 per cent in February, and NDP Leader Andrea Horwath's 76.4 per cent in April.