Republican Congressman's six siblings launch TV advert attacking him

Rozina Sabur
Paul Gosar, a Republican from Arizona, is from the party's most conservative wing - Bloomberg

Six siblings of a Republican Congressman standing for re-election have taken the extraordinary step of releasing an advert urging people not to vote for him.

Paul Gosar,  from the most conservative wing of the Republican Party,  is standing in Arizona for re-election to the House of Representatives in November.

The Congressman has been known to court controversy, and boycotted Pope Francis' speech to Congress in 2015 because of his warnings about climate change.

Now six of his siblings have put their support behind his Democratic opponent David Brill in a new television advert disparaging their brother.

To maximise its impact, the campaign video does not reveal the six speakers' relationship to Mr Gosar until the very end.

The speakers are introduced by first name only - with Grace, a rural physician, stating "Paul Gosar the Congressman isn't doing anything to support rural America".

Jennifer, a medical interpreter, chimes in: "if he actually cared about people in rural Arizona, I bet he'd be fighting for social security, for better access to healthcare".

"He is not listening to you - and he does not have your best interests at heart," says Tim, before adding: "My name is Tim Gosar".

It is not the first time Mr Gosar's siblings have publicly criticised their brother. Last August the Congressman suggested a neo-Nazi rally in Charlottesville, Virginia, was planned by left-wing activists to undermine President Donald Trump.

He later claimed that George Soros, a high profile Democratic Party donor, was a Nazi collaborator. Mr Soros, whose family is Jewish, survived Nazi-occupied Hungary and later emigrated to the US.

Following Mr Gosar's statements seven of his siblings signed an open letter to a local Arizona newspaper, The Kingman Daily Miner, saying: "It is extremely upsetting to have to call you out on this, Paul, but you've forced our hand with your deceit and anti-Semitic dog whistle."

The Republican has also defended far-right British activist Tommy Robinson and attacked "disgusting and depraved" Muslim immigrants during a speech in London in July.

In 2015, he criticised the Pope for supporting efforts to counter climate change - a phenomenon which Mr Gosar believes is based on "questionable science" used "to guilt people into leftist policies".

"It would be difficult 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.

Mr Gosar, who is one of ten children, has not yet responded to this most recent public attack by his siblings.

But in the deeply red state, pollsters predict Mr Gosar is still likely to retain his seat - the Congressman won his seat with more than 70 per cent of the vote in 2016.