A retired general and outspoken Donald Trump supporter has won the Republican Senate nomination in New Hampshire.
Don Bolduc will face Democrat Maggie Hassan in November, who analysts suggest is at risk of losing her seat.
Defeating the incumbent could give Republicans the seat they need to regain a majority in the Senate.
But some party members have questioned whether Mr Bolduc can appeal to more moderate voters and rallied unsuccessfully around other candidates.
A veteran of 10 tours of Afghanistan, the 61-year-old has falsely claimed coronavirus vaccines contain microchips and that Donald Trump won the 2020 presidential election.
He has also raised less than $600,000 (£514,000) from grassroots donors in the same amount of time that Ms Hassan has amassed more than $31m.
In his victory speech on Wednesday, Mr Bolduc – clad in an American flag themed shirt – held aloft a round shield with arrows implanted in it.
“We have taken their arrows. We have successfully protected…