No back door plan for Newman, say Greens

Federal Senator Christine Milne says Campbell Newman needs to come clean with Queenslanders about what he plans to do if he loses his seat at Saturday's state election.

The Queensland premier holds the inner-Brisbane electorate of Ashgrove by a 5.7 per cent margin.

But latest polls suggest he is well behind Labor candidate Kate Jones and in real risk of losing the seat.

The Liberal National Party (LNP) has refused to speculate on what would happen if Mr Newman was voted out by his constituents.

Several senior party members are seen as potential leadership replacements but there's also the possibility of Mr Newman forcing another LNP member to vacate his/her seat.

That would allow Mr Newman to stand in the resulting by-election and retain the premier's office.

Greens party leader Ms Milne says driving Mr Newman out of parliament was one of her party's prime objectives in this month's campaign.

She said if Mr Newman had any sense, he'd accept the will of the people should he lose Ashgrove.

"If he gets run out of Ashgrove he should rule out forcing someone out of a seat and trying to get back in through the back door," she said.

"If the people of Queensland force him out through the electoral door, he should stay out."

The Greens have never had a sitting member of parliament in Queensland but are standing candidates in all 89 electorates.

Their impact is likely to come more through preferences towards Labor than actual victories but Ms Milne said it had been a breakthrough campaign for the party.

"It's very difficult for the Greens here in Queensland ... there is no upper house," she said.

"I'm confident we're going to build the vote in Queensland and, frankly, we've got great candidates all across the state, and if any of them picked up a seat, they would make us proud in Queensland parliament."