Tasmanian premier Lara Giddings is backing away from another power-sharing deal with the Greens after previously appearing to support the move.
Labor premier Ms Giddings has come under fire from a rebel backbencher, who says she should rule out an agreement with the Greens after next year's state election or step down.
The premier had previously told a public debate she would "absolutely" include Greens members in her cabinet again in the event of another hung parliament.
Tasmania's cabinet includes two Greens ministers as part of a deal between the two parties.
Asked again whether she would include Greens ministers, Ms Giddings appeared to back-pedal.
"What I've said is that we want to win majority government. We want to win in our own right," she told ABC radio.
"But it will have to be a caucus decision as to what occurs after the next election."
Renegade backbencher Brenton Best has highlighted Labor's need to divorce with the Greens before the state poll due in March.
Mr Best, who has been accused of trying to shore up his own vote with his outspokenness, has suggested grassroots Labor members are demanding Ms Giddings instigate a split or quit as premier.
The tension comes with Labor languishing in the polls and Ms Giddings' popularity sitting on just 18 per cent.
Ms Giddings has said Mr Best won't be disendorsed because he is not in the league of former federal member Craig Thomson, who is the subject of criminal charges.
The state opposition has criticised the disarray.
"There's no doubt that Ms Giddings will now try and manufacture a split with the Greens in a desperate effort to save her own political skin," Liberal MP Peter Gutwein said.
Opposition leader Will Hodgman, expected to romp to victory at the election, has ruled out a deal with any minor party if there is no clear majority in the 25-seat lower house.
Mr Hodgman's stance has been branded presumptuous by the Palmer United Party, which has said it will run as many as 20 candidates in the Tasmanian poll.
Greens federal leader Christine Milne joined the debate on Tuesday, accusing Mr Hodgman of over-confidence.
"Will Hodgman felt confident enough to back himself into a corner on majority government because he didn't see Clive Palmer coming," Senator Milne said."That is likely to bleed votes from the conservative side of politics and that means it's highly unlikely with a parliament of only 25 that anyone will get a majority."