Western Australia's Liberal leader Libby Mettam has gone the way of her federal colleague Peter Dutton in saying she won't stand in front of the Aboriginal Flag if she becomes the Premier, a view which has drawn criticism from within her own party.

With an election scheduled for March 8, Ms Mettam, who initially supported the Voice referendum before flipping on the issue months later, said only the "State flag and the national flag" will feature at her public statements if she becomes Premier.

Mirroring Mr Dutton's proposed move - labelled "baffling" by one prominent Indigenous leader - Ms Mettam told reporters her federal colleague was "right," noting "there is one national flag and that is the Australian flag".

The Liberal leader said she supports a "united country" behind "one national flag," arguing she has a "deep respect for the oldest continuing culture which is the Aboriginal people".

Ms Mettam also criticised Premier Roger Cook, who labelled her comments "sad" and "cynical" as attempting to distract from his government's political issues.

"I'm not going to be distracted by these matters, I have made my comments clear and what our priorities are…addressing cost-of-living pressures [and] fixing a broken health system," she told reporters.

However, on Friday afternoon, Liberal MLC Neil Thomson, who represents the Mining and Pastoral Region of WA - which takes in vast swathes of Western Australia, including the Kimberly and Pilbara - said whilst he hadn't spoken to Ms Mettam, "I disagree with the point".

"I think in terms of the flag...it's an important part of our culture and shows a respectful position with...First Nations people," Mr Thomson told National Indigenous Times.

"I've always very proudly flown the Aboriginal flag, the Western Australians flag, and the Australian flag in my window...that's where I come from; it represents my community."

The ABC reports that if elected Premier, Ms Mettam's team said the WA Liberal leader would not stand in front of the Aboriginal flag.

The National Museum of Australia states "Australia's national flags - the blue ensign, the Aboriginal flag and the Torres Strait Islander flag – are important symbols."

The Morrison government paid more than $20million to obtain the copyright to the flag in 2022, which was designed by Luritja artist Harold Thomas and first flown at a land rights rally in Adelaide in 1971.

The flag was first recognised as a national emblem by Prime Minister Paul Keating in the 1990s and legislated as a "Flag of Australia" under the Flags Act in 1995.

Premier Cook called Mr Dutton "unfit" to be PM on Wednesday, telling the Broome Advertiser, "there are probably a lot of Aboriginal people who wouldn't want him standing next to the flag either".

On Friday, he said political leaders have a responsibility to unite people, as well as "getting the community together to make sure that we can progress".

"Libby is simply going about trying to bring the toxic political culture of Canberra into Western Australia — that's not the way we do things here in WA," the Premier said.

"What a sad and desperate, cynical approach to try to attract a few miserable votes."

Former Liberal Minister and the first Indigenous member of the House of Representatives, Ken Wyatt, told the ABC the Liberal party's leader discarded the views of Aboriginal people.

He said the decision to acquire the right to the Aboriginal flag was backed by the federal cabinet–featuring Mr Dutton.

"There was no issue raised in that concept of a divisive flag then," he told the ABC.

"We paid $20 million as a government to acquire back the notion of freeing the flag so that people could use it for sporting events, on clothing apparel and in major events without having to pay."