A re-elected Labor government is promising to put Western Australia at the heart of the nation's screen production industry.

Ahead of a March 13 state election, Premier Mark McGowan on Saturday said that if returned to power, his government will spend $120 million on a new studio and screen production facility at Fremantle, plus promotional work to attract filmmakers.

"With an insatiable demand for screen content around the world generated by streaming ... production facilities are being fully utilised and producers are looking for facilities to produce their films," Mr McGowan said in a statement.

"The fact that we have managed the pandemic well means we have an added advantage and can offer a safe environment to produce the productions."

Mr McGowan credited WA with delivering "high-quality screen content" through titles including Mystery Road, The Heights, Breath and Itch.

And the Labor leader, who's expected to claim a solid victory at the polls, has stardom backing his proposal.

"I truly believe this will create excitement all over the world, with the opportunity to shoot in the beautiful and unique state of WA," Hollywood actor Hugh Jackman said of the Fremantle studio idea.

"It will also inspire a whole new generation of filmmakers."

Comedian, composer, writer and actor Tim Minchin joined the premier for the announcement on Saturday.

"Perth is like the LA of Australia ... the locations are stunning," he said.

Mr McGowan's announcement came on the same day a Newspoll published in The Weekend Australian showed he is the preferred leader among 83 per cent of WA voters.

The poll indicates WA Labor is leading the Liberals 68 per cent to 32 per cent on a two-party-preferred basis.

Liberal leader Zak Kirkup was the preferred premier of 10 per cent of poll respondents.

Mr Kirkup on Saturday visited Port Hedland in the Pilbara where he said greater support was needed to encourage on-shore manufacturing.

"We are very good at digging things up and sending them overseas but I firmly believe that here in the Pilbara and in Western Australia, as part of our new energy jobs plan, we should manufacture things here as well," he told reporters.

"We are missing out on the opportunity of the future if we don't seize on our natural advantage here ... to make sure we invest in lower-emissions technology, diversify our economy and create 10s of thousands of jobs."

The opposition leader offered only a brief response to the polling.

"We've seen time and time again how unreliable they are," he said.

Australian Associated Press