In an interview with Mr. Levin on Nov. 10, for instance, Mr. Wood called for the Biden electors to be replaced in a special session of Georgia’s legislature “so they can elect the electors to vote for Donald Trump.” He then falsely claimed that Mr. Trump not only won the state by “a landslide” but also won the national popular vote with 70 percent support.

On their own, comments as outlandish as these might not rise to become as widely accepted as they are now among Mr. Trump’s base. But the hosts validated them beyond just giving them a platform. They vouched for the professional credibility of the lawyers.

Speaking to his audience the next day, Mr. Limbaugh cited Mr. Wood’s remarks and said, “I’m telling you that if you listen to Lin Wood and Sidney Powell, they continue to make it sound like it’s a slam dunk.” Mr. Limbaugh offered his assurances that the lawyers would not put their careers on the line if they weren’t serious.

“They’ve Paul Bunyan-ized them,” said Angelo Carusone, the president of Media Matters, a left-leaning group. “And now they’re invested in maintaining this story.”