Christensen vows to stay a National MP

Maverick federal government MP George Christensen insists he won't defect to One Nation despite the fact it could shore up his voter support base.

An opinion poll released on Monday revealed Mr Christensen is staring down a challenge from Pauline Hanson's party in his seat of Dawson ahead of the 2019 election.

Primary vote support for One Nation had reached 30 per cent in the central Queensland electorate, putting it neck and neck with the Liberal National Party at 30.4 per cent.

Mr Christensen said voters in his electorate wanted to see tangible results from Canberra in terms of jobs creation.

"There are a number of dams that we've got that are under planning stage, they'll have to be started before the next election," the LNP backbencher told Sky News on Monday night.

He hit out at planning delays and environmentalists trying to protect "bottom breathing turtles" saying last time he checked the creatures could swim.

He acknowledged that it was "possible" he would be able to shore up his support base by joining One Nation.

"Possible. But no, I'm in the National Party," he said.