“There isn’t going to be any harmony: They’re out to bring this guy down,” Mr. Bellows said, referring to “the Democrats and the liberals and the left.”

“They hate the fact that he was elected,” he said. “They’re astonished that he was elected.”

Another host in Omaha, Matt Tompkins, whose radio show does not claim a partisan viewpoint and who was critical of the Trump administration at times on Wednesday, bemoaned the loss of civility in public discourse.

“Now it’s like you have to hate the other person, the other party,” Mr. Tompkins said. “You bring up a discussion or a debate on anything — Russia, whatever it may be we’re talking about today — and I’ll get messages from people that are just: ‘No, that’s completely wrong. Everything you said is fake. The New York Times is fake. It’s all fake. You’re an idiot. I hate you.’”

A wide variety of people voted for Mr. Trump, including moderate conservatives who were mainly trying to block Hillary Clinton from being elected. In interviews on Wednesday, moderates, too, were for the most part standing by Mr. Trump. They said that it seemed Mr. Flynn had made mistakes, but that ultimately, Mr. Trump had taken responsibility and asked him to step down.

“If you think about it, at the end of the day, he said ‘you’re fired,’” said Michael Fortune, a pension plan administrator in Atlanta. “He’s handled this situation appropriately.”

He added: “The way it’s being presented is that he hired a liar. I’m like, guys, I don’t think that’s how the common man sees it. He fired someone who was not honest with him.”

Jeff Wagner, a conservative talk show host in Milwaukee, noted that during the presidential campaign, he was not a supporter of Mr. Trump, and said he believed that some of the administration’s actions so far should have been executed differently. But he defended the president on his show, denouncing the news media and the intelligence community for their roles in revealing that Mr. Trump’s campaign aides were in contact with Russian intelligence officials before the election.