Sen. Jeff Flake of Arizona said his family received death threats after he asked the Senate Judiciary Committee to hear testimony from Christine Blasey Ford, who accuses Supreme Court nominee Brett Kavanaugh of sexually assaulting her when they were teens.

The judge, who has strongly denied the allegation, also will testify before the committee on Thursday.

Flake, a key Republican who has yet to announce how he will vote on President Trump’s embattled nominee, said a caller warned that he would take Flake and his family “out” if he didn’t stop interfering.

“The toxic political culture that we have created has infected everything, and we’ve done little to stop. Winning at all costs is too high a cost,” he said in a video carried live Wednesday from the Senate floor.

“One man somewhere in the country called my office in Arizona saying he was tired of me ‘interrupting my president,'” Flake added.

“And of that offense of allowing Dr. Ford to be heard for this offense, me and my family would be taken out. I mention this with reluctance, but only to say we have lit a match, my colleagues. The question is do we appreciate how close the powder keg is?”

Flake is one of the key undecided Republican votes, including Sens. Susan Collins of Maine, Lisa Murkowski of Alaska and Bob Corker of Tennessee.

He is the only one from that group who sits on the Senate Judiciary Committee and could sway the nomination given the split between the panel’s 11 Republicans and 10 Democrats.

Flake said the only certainty about the vote is that the outcome “will forever be steeped in doubt.”

With Post wires