The Victorian Coalition has been embarrassed by the behaviour of a young candidate just hours before its campaign launch took place.

A report in the Herald Sun has images of 21-year-old Melton candidate Braidy Kean promoting 24-hour alcohol consumption on the social networking site Facebook.

He also reportedly insulted Victoria's Police Commissioner and his federal leader, saying that he would rather revoke his membership than have Tony Abbott as leader.

The Facebook page has since been deleted and officials are meeting now to discuss the situation.

Victorian Treasurer John Lenders says it shows the Opposition's lack of integrity.

"You can't say you're tough on crime and the causes of crime and have candidates going around saying those outrageous things on their Facebook page and expect to be taken seriously," he said.

Mr Lenders has drawn a parallel between the page and the Opposition's refusal to give election costings.

"If you're saying you're good financial managers you've got to submit your costings and say where the money's coming from. The same applies if you say you're tough on crime and the causes of crime, you've got to practice what you preach," he said.

Meanwhile, parties have until midday (AEDT) today to lodge their Upper House preference deals.

The deals are key to the negotiations between The Greens and the major parties as to who they will preference in a number of Lower House seats.

Polls locked

Two polls halfway through the Victorian election campaign show the gap is narrowing between Labor and the Opposition.

The Newspoll, published in Saturday's Australian newspaper, shows Labor sitting just two points ahead of the Coalition, 51 to 49 per cent in the two-party-preferred vote.

Fairfax's Nielsen/Age poll gives Labor 52 per cent of votes after preferences, over the Coalition's 48 per cent.

It suggests the Greens will get 16 per cent of primary votes and will win Lower House seats for the first time, and predicts they could seize the balance of power in the State Parliament.