Tasmanian Labor's administrative committee has unanimously voted to allow rank-and-file ballot to elect the next leader of the party for the first time.
Anyone who joins the party before April 10 will get a vote in the ballot with the new leader to be announced on April 24.
Under the new process, the membership, affiliated trade unions and the elected Labor MPs will be given an equal say.
However, it's unclear whether there will be any need for a ballot.
Outgoing Premier Lara Giddings has indicated she will only stand in the ballot if she gains the support of caucus first.
Her former deputy Bryan Green is believed to be ready to serve in the short term before handing over to another MP before the election.
Another possible contender is Julian Amos who is vying for the fifth seat in Denison which is likely to be decided tonight or tomorrow.