The daughter of a US Republican candidate has urged voters not to support her father.

Steve West, the host of internet conspiracy theory radio show Jack Justice, is the Republican candidate for District 15 on the Missouri General Assembly in next week’s midterms.

But his own daughter, Emily West, has urged voters not to support her dad, who is challenging incumbent Democratic state official Jon Carpenter.

Speaking to the Kansas City Star, she said: “My dad’s a fanatic. He must be stopped… his ideology is pure hatred. It’s totally insane.

“He’s made multiple comments that are racist and homophobic and how he doesn’t like the Jews.”

Steve West picked up 49.5 percent of the vote against three opponents in the district’s Republican primary in August, despite having previously proclaimed on his YouTube radio show that “Hitler was right” and attacked a “Jewish cabal.”

In YouTube clips from 2017, West describes same-sex marriage as a “foul assault on the human race,” brands President Barack Obama a “gay b***h,” and claims that Michelle Obama is actually a transgender woman who was born “Michael.”

He also linked gay and Jewish people to a so-called “synagogue of Satan,” claiming that marriage will be opened to “multiple men and women and animals and children.”

West added: “Gay men, lesbians, paedophiles, bestiality, bisexuals, transvestites, this is all a foul perversion, that’s what it is. It’s obscene deviance. These people are a poison on Western civilisation.”

Speaking about her father’s views, Emily West said: “I can’t imagine him being in any level of government. A lot of his views are just very out there.

“I think it’s just insane that people are putting out his signs. You see his signs everywhere. I don’t understand how people can put out his signs knowing the comments that he’s made.”

Another of the candidate’s children, Andrew West, told the Kansas City Star that his father had the “same objective” ideologically as the shooter who killed numerous people at the Tree of Life synagogue in Pittsburgh last week.

State Republican leaders have previously sought to distance themselves from West, despite his victory in the party’s primary.

The party said in a statement: “Steve West’s shocking and vile comments do not reflect the position of the Missouri Republican Party or indeed of any decent individual.

“West’s abhorrent rhetoric has absolutely no place in the Missouri Republican Party or anywhere. We wholeheartedly condemn his comments.”

West’s Democratic opponent, Jon Carpenter, said of his remarks, “This is anti-semitism, Islamaphobia, homophobia, and racism to a degree that truly shocks the conscience.”

The Wests are hardly the first family to be publicly at war over politics this year.

In March, the parents of a GOP candidate in Wisconsin donated the maximum possible amount to his potential Democratic opponent.

In September, the gay brother of Fox News host Laura Ingraham spoke out against her extreme views, branding her a “monster.”

The same month, six siblings of an Arizona congressman launched an election ad attacking him and backing his opponent.

The midterm elections will take place on November 6.