Paul says if four or more of his GOP colleagues join with Democrats to entertain new witness testimony, he will make the Senate vote on subpoenaing the president’s preferred witnesses, including Hunter Biden and the whistleblower who revealed the Ukraine scandal — polarizing picks who moderate Republicans aren’t eager to call. So he has a simple message for his party: end the trial before witnesses are called.

“If you vote against Hunter Biden, you’re voting to lose your election, basically. Seriously. That’s what it is,” Paul said during an interview in his office on Wednesday. “If you don’t want to vote and you think you’re going to have to vote against Hunter Biden, you should just vote against witnesses, period.”