Conservative radio host Hugh Hewitt resigned from the Washington Post after feuding Friday with two of the newspaper’s liberal columnists during a live talk show — calling it “the most unfair election ad I’ve ever been a part of.”

Hewitt stormed off the set during the online show “First Look” with Jonathan Capehart and Ruth Marcus, who claimed former President Donald Trump was “laying the groundwork” to contest Tuesday’s election if he lost.

After being cut off by Capehart, an MSNBC host, and then accused by him of spouting misinformation, Hewitt ripped out his earpiece and said: “I’m done. This is the most unfair election ad I’ve ever been a part of.”

Hewitt, who hosts a nationally syndicated radio show, then quit the paper, which has been roiled by owner Jeff Bezos’ decision to kill an endorsement for Vice President Kamala Harris.

He has written hundreds of columns for the Washington Post since since 2017.

Two sources familiar with Hewitt’s exit first disclosed it to The New York Post.

“I have in fact quit the Post but I was only writing a column for them every six weeks or so,” Hewitt later told Fox News Digital.

The New York Post has sought comment from WashPo.

Friday’s blowup happened during a conversation about a lawsuit filed by the Trump campaign in Pennsylvania, where a judge agreed to a request to extend in-person voting in Bucks County.

The Trump campaign and the Republican National Committee successfully sought an extension of the deadline after several people who were on line for mail ballots were turned away after the 5 p.m. cutoff on Tuesday.

“Is it me or does it seem like Donald Trump is laying the groundwork for contesting the election,” Capehart asked Marcus.

“By claiming that cheating was taking place, but suing Bucks County [Pennsylvania] for alleged irregularities.”

Marcus replied that Trump has been “laying the groundwork” to contest the election for months.

Hewitt then tried to get a word in, saying: “Jonathan, I’ve gotta speak up.”

“Let Ruth finish, Hugh,” Capehart shot back.

After waiting his turn, Hewitt noted that this was news that needed to be reported.

“Bucks County was reversed by the court and instructed to open up extra days because they violated the law and told people to go home,” he said.

Hewitt also mentioned the recent Supreme Court ruling that backed Virginia Gov. Glenn Youngkin’s move to purge 1,600 people from voter rolls.

“We are news people, even though we have opinions, and we have to report the whole story if we bring up part of the story. So, yes, he’s upset about Bucks County, but he was right and he won in court. That’s the story,” Hewitt said.

After a brief pause, Capehart told Hewitt, “I don’t appreciate being lectured about reporting when, Hugh, many times you come here saying lots of things that aren’t based in fact.”

The accusation infuriated Hewitt.

“I won’t come back, Jonathan, I’m done,” he said. “You guys are working, that’s fine, I’m done.”

Conservative media luminaries lauded the veteran radio host and pundit for standing up to Capehart’s badgering.

“BRAVO @hughhewitt! Factual, sober, brave and appropriately FED UP with these left-wing hacks posing as journalists,” beamed fellow conservative radio host Megyn Kelly.

The testy exchange comes amid upheaval at the Beltway paper that includes the resignations of three opinion editors over the paper’s decision not to endorse a presidential candidate for the first time in 36 years.

Bezos warned in an Oct. 28 op-ed that the paper’s staff had been “increasingly” willing to “talk only to a certain elite,” rather than the broader American public.

“More and more, we talk to ourselves,” Bezos wrote. “It wasn’t always this way — in the 1990s we achieved 80 percent household penetration in the D.C. metro area.”

The publication has reportedly had 250,000 readers cancel their digital subscriptions in protest.