Comey was carrying out the investigation into alleged ties between Trump's administration and Russian Federation that led to the triumph of Trump in the 2016 presidential elections.
Trump advocate Newt Gingrich urged the president to "rethink" Mr Mueller's position, saying: "Republicans are delusional if they think the special counsel is going to be fair".
Before the tapes, there was Trump's unfounded claim that former President Barack Obama "wiretapped" him in Trump Tower during the campaign - setting off a flurry of official inquiries from Congress.
Trump responded at that time, via Twitter, that Comey "better hope that there are no "tapes" of our conversations before he starts leaking to the press!".
Flynn's firing ratcheted up the investigation of him, as well as the investigation of whether anyone from the Trump campaign had assisted Russian intelligence agents in hacking into computers in America in order to affect the outcome of the election. Mueller, the somber-faced and demanding FBI director who led the bureau through the September 11 attacks, and Comey, his more approachable and outwardly affable successor, may be poles apart stylistically but both command a wealth of respect in the law enforcement and legal community.
By flattering Trump, and inflating his ego, Fox News may have added to evidence that Trump obstructed justice.
Praised by Earhardt for what she dubbed a "smart" move, the president retorted, "Well, it wasn't very stupid, I can tell you that".
At a Senate committee hearing this month, Comey suggested that the president's reference to possible recordings inspired him to disclose to the media through an intermediary a memo he had written of an Oval Office conversation from February.
President Trump accused Special Counsel Robert Mueller of hiring "all Hillary Clinton supporters" to staff the investigation into Russia's meddling in the 2016 election. "And if you look further back, before he heard about that, I think maybe he wasn't admitting that so, you'll have to do a little investigative reporting to determine that". But Trump's offer to testify under oath was risky, as it could result in the president perjuring himself.
Though the tweets were vague, they carried the implication that Trump had tapes and planned to release them. They played pivotal roles in a 2004 White House confrontation and have spoken warmly of each other over the years, with Comey describing Mueller as "one of the finest people I've ever met".
By about a 2-to-1 margin, the respondents said they are more likely to trust Comey's account, which he laid out in detail in Senate testimony earlier this month.