Republican congressman Chris Collins has narrowly retained his seat in the US midterm elections despite being indicted on insider trading charges involving shares in an Australian biotechnology company.
Collins faces a hefty jail sentence if convicted.
That did not deter enough voters in his traditional Republican stronghold electorate on Tuesday in upstate New York from sending him back to Washington DC for his fourth term in the House of Representatives.
"I am innocent until proven guilty even though the press convicted me, dismembered me and burned me at the stake," a defiant Collins told reporters after his Democrat opponent Nate McMurray conceded.
Collins, a staunch supporter of US President Donald Trump, was indicted in August in New York for allegedly participating in a scheme to commit insider trading of securities in Australian Stock Exchange-listed Innate Immunotherapeutics.
He initially suspended his re-election campaign before deciding to seek a fourth term.
Collins sat on the board of Innate and, along with family members, was a major shareholder.
Prosecutors allege Collins was at a picnic at the White House on June 22 last year when Innate's chief executive sent a highly-confidential email to Collins confirming the company's multiple sclerosis drug had failed a critical trial.
Collins was obligated to keep the trial results secret until Innate publicly released them, but he allegedly tipped off his son Cameron Collins who was also a substantial shareholder.
Cameron Collins, who also faces charges, allegedly tipped off his father-in-law Stephen Zarsky and others who sold shares before the information went public and the stock value crashed.
Prosecutors allege the trades allowed Christopher and Cameron Collins, Zarsky and others to avoid over $US768,000 ($A1.07 million) in losses.
The three have entered not guilty pleas to securities and wire fraud charges that carry maximum 20-year jail sentences.
The trial is scheduled for 2020.
Collins, who was also accused of airing a racist ad during the campaign, managed just 49.5 per cent of the vote on Tuesday compared to McMurray's 48.4 per cent with about 94 per cent of ballots counted.
It was a contrast to Collins' 2016 third term win when he claimed 67 per cent of the vote.