Former Barnett Government minister turned independent MP Rob Johnson has claimed an attempt to stop the preselection of a Liberal candidate in his seat of Hillarys is partly driven by bigotry and anti-Semitism.

Mr Johnson, who quit the Liberal Party earlier this year, also told Parliament during his budget reply speech he was still weighing up whether to run as an independent in Hillarys in the state election next March.

Mr Johnson's departure from the Liberals has left businessman Simon Ehrenfeld and Upper House MP Peter Katsambanis vying for preselection for what has historically been a safe seat for the conservative party.

Mr Ehrenfeld comfortably won the local preselection vote but state council intervened in that process and will now make a final decision on Saturday.

A Liberal spokesman said the preselection for Hillarys had been run fairly and within party rules.

But Mr Johnson told Parliament the decision not to endorse Mr Ehrenfeld was a "blatant misuse of power", saying the party was plagued by "factional corruption".

"The hardline so-called Christian Right, or the religious cult as I call them, which is part of the Liberal Party's ruling faction, vetoed his preselection," Mr Johnson said.

"They fed off the back of those bigots who just wanted to stop Mr Ehrenfeld, who is Jewish obviously.

"The overwhelmingly endorsed local has been thrown out and this Saturday a factional hack, who has lived most of his life off the taxpayer and arrived from Victoria in 2010, will almost certainly be shoehorned in.

"I am looking hard to the party machine justifying why they have foisted him on the people of Hillarys."

Katsambanis has record of opposing bigotry

Mr Katsambanis, who was elected in the Upper House's North Metropolitan Region in 2013, previously served as an MP in Victoria from 1996 to 2002.

Mr Katsambanis declined to comment on Mr Johnson's remarks, citing rules preventing candidates seeking preselection from speaking to the media.

Simon Ehrenfeld was backed for preselection by his branch but blocked by the executive. ( Linkedin )

But he has previously spoken out against what he warned was a growing number of "hateful racist attacks" against Jews.

"If we start cowering in the face of vile racists, and if we start cowering in the face of anti-Semites, we will go down the slippery slope towards losing the religious freedom that we treasure," Mr Katsambanis told Parliament in 2014.

Meanwhile, Mr Johnson said he was reaching out to his electorate to determine if he should run as an independent in a bid to win a sixth consecutive term as the Member for Hillarys.

"I am actually polling my electorate because I believe they need to have a say in who represents them at the next election," Mr Johnson said.

"There is a poll paper being printed and delivered ... they just have to simply say if they would like me to continue to represent them."