Nationalist bomb thrower Steve Bannon trashed the choice of Mike Pence as Donald Trump’s running mate — calling the socially conservative Republican “the price we pay” for winning the support of the GOP establishment, a new report said Tuesday.

Bannon and Milo Yiannopoulos, the political provocateur and former technology editor at Breitbart News, shared their dim view of the former Indiana governor in emails obtained by BuzzFeed News.

“Seems like a bad pick. Should I tweet something ambivalent about him? People are telling me Trump likely didn’t want this. …What’s our party line on this?” Yiannopoulos wrote to Bannon and Breitbart editor Alex Marlow on July 15, 2016, the day Team Trump named Pence as its choice for veep.

“This is the price we pay for cruzbots and #nevertrump movement. An unfortunate necessity … very. feel free to do whatever u want. we, as always, will remain above it all,” Bannon replied, shortly after he signed on as Trump’s campaign manager.

Two days later, Bannon approved a column by the gay Yiannopoulos asking Pence — an evangelical Christian who won’t meet or dine with a woman unless his wife, whom he calls “Mother,” is with him — to attend a “big gay party for Trump.”

“I’m cool,” Bannon wrote of the story.

“It’s a little mocking but we want to turn the screw,” Yiannopoulos answered, according to the website.

Bannon, after leaving the White House, has declared war on the Republican establishment, backing hard-right populists over party regulars and threatening to support primary challengers to incumbents he views as hostile to President Trump’s America First agenda.

A spokesperson for Bannon did not respond to a request for comment from BuzzFeed. A rep for Pence also declined to comment.

Pence, also a former lawmaker, acts as Trump’s liaison to the GOP establishment, with whom he’s been increasingly at odds.

During speeches, rallies and on Twitter, he’s attacked a number of GOP leaders, including Sens. John McCain, Mitch McConnell, Jeff Flake, Lisa Murkowski and, most recently, Bob Corker, who over the weekend questioned Trump’s competence and stability.

Trump has also gone after Speaker Paul Ryan and other House lawmakers, blaming them for his administration’s failure to pass any significant legislation.

But Trump apparently remains in Pence’s corner, praising him for his staged walkout from an Indianapolis Colts game Sunday because some NFL players took a knee to protest social injustice during the national anthem.

Trump has tried to reframe the protests as being anti-military and anti-US flag, stoking his nationalist base but, as critics charge, fanning the flames of racial division.

Bannon has taken a number of shots at Trump since rejoining Breitbart — and scored a win against his former boss by backing conservative evangelical Roy Moore over Trump’s candidate, “Big Luther” Strange, in a runoff to fill the Alabama Senate seat vacated by Attorney General Jeff Sessions.

Moore easily won the Cotton State contest.

In an interview Monday night with Fox News personality Sean Hannity, Bannon said he was forming a “coalition coming together that’s going to challenge every Republican incumbent [senator] except for Ted Cruz.”

“We are declaring war on the Republican establishment that does not back the agenda that Donald Trump ran on,” Bannon told Hannity, one of the president’s most fervent backers in the cable TV world.