12/03/2017 8:01 AM AEDT | Updated 12/03/2017 9:03 AM AEDT

WA Election: Labor Promises 'Hope And Opportunity' After Landslide Win

Mark McGowan will be the state's new premier.

Paul Kane via Getty Images
Labor has swept to power in Western Australia.

The Labor Party has had a resounding victory in the West Australian state election ending Colin Barnett's eight-and-a-half-year reign as WA Premier.

There was massive swing towards Mark McGowan's Labor Party on Saturday and the ALP is tipped to win as many as 41 seats, having needed just 30 to oust the Liberal-National Government.

McGowan will in coming days be sworn in as the state's 30th premier.

"We will get to work immediately on carrying out our plans," he said in his victory speech.

"I came here 27 years ago in my Corolla across the nullabor and today the people of Western Australia have made me premier, thank you

"Today western Australians voted for hope and opportunity over desperation and division."

Pauline Hanson's One Nation party's was hyped for a strong showing but looks to have missed out on a lower house seat.

Across WA, almost 1.6 million people were enrolled to vote for more than 700 candidates from 16 parties.