West Australian Premier Colin Barnett is adamant he can rescue his Government from the brink of defeat to win a third term, amid polling showing Labor is on track for victory in the March election.

Mr Barnett once again hosed down suggestions of a late leadership switch, insisting he remained the best person to lead the party to the election.

His comments come after a Newspoll gave Labor a 54 per cent to 46 per cent lead in two-party preferred terms, the biggest gap in a major state poll since May.

If a uniform swing of that size eventuated in the March election, the Liberals would lose 14 seats and Labor would form government with a clear majority.

But Mr Barnett denied it was too late for him to turn the election race around.

"The Labor Party is in front, we know that, but we are still only at day two of a five-week campaign," Mr Barnett said.

"It is still comparatively close."

Mr Barnett was adamant he would lead his party to the election and had the support of his colleagues, as he appealed to voters to appreciate the value of stability.

"When John Howard lost his job look at what happened to Australia, one Prime Minister after another and complete chaos," he said.

"One of the great strengths of Australia is stability of government and we have been able to provide that.

"People need to decide who they want to run the state. If you want a popstar, that is not me."

Labor leader Mark McGowan batted away questions about the Newspoll result, saying he was focused on policy matters.

"We are focused on policies and ideas for the future of Western Australia, not the polls," he said.

"It is a cliche but the polls come and go."

Labor, Liberals roll out education promises

After earlier promising to increase the maximum sentence for methamphetamine traffickers, Mr McGowan pledged to spend $2 million introducing coding to the school curriculum.

He also said a Labor Government would spend $17 million on science programs in public primary schools.

Meanwhile, Mr Barnett promised that a re-elected Liberal government would put $20 million towards upgrading play areas in public schools and another $4 million towards new playground equipment.