Premier's big call as state parliament hangs in balance

Jeremy Rockliff appointed the independent member for McIntyre Tania Rattray the leader for the government in the state's upper house, days after he was reinstalled as premier.

"While we serve in different Houses, I have always admired Tania's collaborative approach, common sense and commitment to her community," Mr Rockliff said in a post on social media platform X.

"I look forward to working with Tania and all Members of Parliament together, to deliver for Tasmania."

Ms Rattray, who has held her seat since 2004, said she agreed to take on the role "in the spirit of co-operation" and looks forward to the opportunity while remaining an independent member.

"It is clear to me Tasmanians are looking to their elected representatives to show leadership and work collaboratively," she said in a Facebook post.

"That's exactly what I'm committed to."

Ms Rattray's new role has been celebrated by the state's crossbenchers but has also raised suspicions Mr Rockliff might have an ulterior motive.

"This appointment is, however, an effective way for the beleaguered Liberals to neutralise - to a significant extent - an independent vote in the Legislative Council," Greens member for Hobart Cassy O'Connor said.

Mr Rockliff was reinstalled as premier on Wednesday after the governor granted his request to form a minority government.

Ms Rattray's appointment could be short-lived, with a planned motion expressing no confidence in the Liberals and confidence in Labor set to be moved when state parliament returns on August 19.

Neither the Liberals with 14 seats nor Labor with 10 won the 18 required to control the lower house in their own right after a snap poll produced a hung parliament.

Mr Rockliff and Labor's Dean Winter have no formal agreements of support with the 11 minor party MPs and independents.