Elon Musk is threatening to primary Republicans who voted for President Trump’s “big, beautiful bill,” posing a challenge for the president and his allies as they look to defy midterm headwinds.

Musk vowed earlier this week that Republicans who supported Trump’s megabill “will lose their primary next year if it is the last thing I do on this Earth” as the Tesla CEO has reignited his feud with Trump in recent days.

Republicans see the comments as unhelpful, with some saying if the threats come to fruition, it could risk diverting resources away in an election environment that historically hasn’t been kind to the president’s party in power.

“One of the most destructive behaviors that we've had in cycles where we've been unsuccessful in Senate races ... are those in which we have expended massive resources in intraparty warfare,” said one Republican consultant who’s worked on Senate races.

Ever since Musk ended his stint at the White House, the billionaire has been a vocal critic of Trump’s major policy bill, taking particular issue with the projected trillions of dollars multiple analyses say will add to the deficit.

The House narrowly passed the final version of the bill on Thursday, and Trump signed it Friday evening at a White House Fourth of July event.

But Musk’s frustrations reached a new point on Monday when he said he would back........

© The Hill