Some members of the Queensland Opposition are angling for a leadership spill as early as this week.

A source within the Liberal National Party (LNP) has told ABC News there is "no doubt" that there are "manoeuvres behind the scenes" for a leadership spill.

Numbers are being crunched for Tim Nicholls and Tim Mander as two potential challengers to Lawrence Springborg's position as head of the parliamentary party.

So far, neither man appears to have enough support to be successful and it is unclear whether anyone else is likely to challenge.

A spill could be called as early as Thursday or Friday, although the LNP party room is not scheduled to meet until next Monday.

While some LNP colleagues described Mr Springborg as highly respected among his peers, a number of Opposition MPs want a fresh face leading the party to the next election.

Mr Springborg's supporters believe that despite his previous failures at leading the party to victory he could still succeed as he is a known quantity and considered inoffensive.

Deputy Opposition Leader John-Paul Langbroek said on Monday he would not launch any challenge.

"No, no I won't be challenging, I've got... no, I'm not challenging Lawrence Springborg," he said.

"I'm happy to serve as his deputy, he's done a great job taking us to a lead in the two-party-preferred polling."

A ReachTel poll last week put the LNP ahead of Labor at 52 to 48 per cent, two-party-preferred.

But it is understood leadership rumblings were sparked by Labor's surprise move to introduce compulsory preferential voting (CPV), which could hand them an extra eight seats.

Mr Langbroek said he did not believe anyone could have prevented the Government's shock introduction of CPV, so it is unrelated to the leadership.

The new laws had the support of Katter's Australian Party in the hung parliament, and Mr Springborg has reportedly come under fire for failing to negotiate with the crossbenchers to prevent them from backing the changes.