THE LNP has not ruled out introducing a no-confidence motion to bring down embattled government minister Jo-Ann Miller.

Speaking to media at Parliament House in Brisbane, Shadow Attorney-General Ian Walker said the Bundamba MP should be dropped from the cabinet in an expected ministerial reshuffle.

He said Ms Miller's cabinet position was safeguarded only because of backing from the CFMEU.

"She's a poor performer - it's been months she's been a poor performer and she's being protected because she's the CFMEU's person in that cabinet," he said.

Mr Walker did not call on Ms Miller to fall on her sword and resign, but said Premier Annastacia Palaszczuk should sack her from as Police Minister and from the cabinet entirely.

"The Premier has to do something about this - she's got to deal with the unacceptable control the unions have on the Labor party," Mr Walker said.

"These are things that have got to be sorted by the Labor party. The important thing for the Premier is to ensure that when she is doing her ministerial reshuffle she does in fact do something about this."

Mr Walker said the LNP would consider "all the options" in dealing with Ms Miller, including a no-confidence motion, in the year's final sitting week of parliament next week.

Mr Walker would not, however, publicly back his own leader, Lawrence Springborg, to lead the LNP to the next election.

Mr Walker repeatedly evaded questions on Mr Springborg's future, instead praising the progress the party as a whole had made in recent polls.

Ms Palaszczuk defended Ms Miller on Wednesday, telling reporters no one in the party had complained to her about the Police Minister's performance.

Health Minister Cameron Dick told reporters yesterday he believed Ms Miller was a "good minister" and had performed well. - APN NEWSDESK