TASMANIAN Labor delegates have voted to ban any non-ALP members from future Labor-led state cabinets.
Labor leader Bryan Green yesterday moved a motion at the party's state conference in Launceston to rule out any such power-sharing deals.
Under the changes, Labor will no longer offer non-ALP politicians ministerial portfolios or cabinet positions to secure office in the event of a hung parliament.
Mr Green's move comes after an internal review of the party's overwhelming defeat at the March state election.
The review found a power-sharing deal struck between Labor and the Greens in 2010 had turned voters against the party.
The arrangement included Labor offering cabinet positions to Green MHAs Nick McKim and Cassy O'Connor.
Mr Green yesterday conceded the deal had made it impossible to communicate the party's policy platforms.
Yesterday's reforms do not entirely rule out Labor ruling as a minority government in the future.
But Mr Green said any future minority governments Labor engaged in would be formed on the floor of Parliament after being endorsed by the wider party.
Mr Green's motion did not win unanimous support, with Battery Point Labor branch member Rod Hunt moving to vote it down.
''I'm not saying you should do whatever it takes to win government, but I am saying that there might be a situation where you are so close to having government that you do need to accept somebody else into the cabinet,'' Mr Hunt said.
''We shouldn't restrict tactics available to our leader or parliamentary party ... we should give them the trust we put in them by endorsing them as Labor candidates for office.''
But Mr Hunt was the only one to speak against the flagged changes, and the motion was passed with support from the vast majority of delegates.