Phoenix Republican Congressman Paul Gosar's brothers and sisters have made their sibling rivalry political.
Paul Gosar is the oldest of ten siblings.
And not only are six of Gosar's own siblings endorsing Brill, they're appearing in ads for him.
"None of this is pleasant for any of us", David Gosar says.
Paul Gosar first entered Congress in 2011 with the backing of the populist Tea Party movement.
The idea for the video campaign came about after one of Brill's campaign staffers, Jay Ruby, cold-called Gosar's brother David after seeing some of his Twitter posts criticizing his brother, the Phoenix New Times reported.
At a Capitol Hill hearing for former Federal Bureau of Investigation official Peter Strzok, Gosar also memorably said that his job as a dentist made him particularly skilled at reading body language.
A man called "Tim" quickly agrees, saying "He is not listening to you, and he does not have your best interests at heart". "This is not who we are". "I'm not going to break bread with a racist". Gosar issued a statement in January urging Attorney General Jeff Sessions to check IDs at the State of the Union address and arrest and deport all Dreamers if they attended.
This summer, he spoke at a rally in London, England for one of Britain's most notorious anti-Muslim campaigners, Tommy Robinson, drawing rebukes from Muslim-American groups. Gosar was pretty much forced to respond in some way, which he did on Saturday - by citing Josef Stalin, naturally. The Congressman also believes that the white supremacist rally held at Charlottesville a year ago was a creation of the left. "None of us even want to do it".
'Those aren't our family values or the values of the small Wyoming town we grew up in.
"It would be hard to see my brother as anything but a racist", Mr Gosar's sister Grace tells voters in another upcoming advert, according to The Phoenix New Times.
"And intervention time means you go to vote and you go to vote Paul out".
"This is a matter of right and wrong, not politics", the letter by Gosar's siblings stated.
He faces an uphill battle for the seat; Gosar trounced his Democratic opponent in the deep-red district in 2016, receiving 71.5 per cent of the votes. After Charlottesville they said they barely recognize their brother.
He added, "You can't pick your family".