Barnett confident of keeping leadership

West Australian Premier Colin Barnett has denied his leadership is in jeopardy following recent poor polling and insists if anyone was dissatisfied with his performance they would tell him.

The latest Newspoll this week revealed Mr Barnett's personal popularity had slumped to a record low as Labor extended its lead over the Liberals, but the premier remains confident he will lead the party to the March election.

"If any member was dissatisfied with my leadership or thought they should be leader or could do a better job they would come and talk to me about it," he told reporters on Friday.

"They're all my friends. No one has raised the issue with me at all."

Mr Barnett said winning a third term was a tough ask but his government could still campaign on its economic record, which he described as "pretty damn good" despite record debt and deficit.

"We've got a higher level of debt than we want but it is manageable," he said.

"Because we tend to have a volatile economy, people tend to exaggerate the good times and exaggerate the bad times.

"There is not a single area of public policy where we have not excelled."

Treasurer Mike Anon said he had not heard rumblings about backbenchers agitating for a spill.

Dr Anon said he was 100 per cent confident in Mr Barnett's leadership and "definitely" ruled out any interest in the top job or the deputy premier role.

"We have a beautiful deputy (in Liza Harvey). She just got appointed a month or so ago and Colin is the leader," he said.