TORONTO -- The three main party leaders are into the last week of campaigning for the June 12 election.

NDP Leader Andrea Horwath has a busy day planned with five stops covering Toronto, Milton and Brampton, while Progressive Conservative Leader Tim Hudak visits Mississauga and Toronto.

Liberal Premier Kathleen Wynne works her way north of Toronto, with stops in Newmarket, Bolton and Barrie.

Campaigning in Toronto on Thursday, Wynne said a deficit-obsessed Hudak would hurt employment and damage Ontario's economic recovery if his Tories form the next government.

Speaking to a business audience, Wynne blasted the Hudak as a destructive throwback to the cost-cutting ways of former Conservative premier Mike Harris.

She says Hudak's election pledges are based on faulty math and a wrongheaded approach to eliminating the province's $12.5-billion deficit.

In Ottawa, Hudak suggested that the Liberals may have made a deal with the Ontario Provincial Police Association in exchange for its support during the election.

Union President Jim Christie calls Hudak's allegation "baseless and irresponsible."

Christie has said that ads his association took out against the PC party aren't an endorsement of the Liberals nor of the NDP -- they just don't want Hudak as premier.

Meanwhile, the province's auditor general says an audit of the Liberal government's funding of a Toronto real estate development is part of a larger review of the province's infrastructure loan program.

The auditor says it was underway long before the New Democrats demanded a probe.

The NDP claimed Thursday that the probe was "in response" to their concerns about the Liberals' decision to bail out the MaRS innovation and research complex.

Wynne has defended her government, saying the deal was not made public because it hasn't been finalized.