Fifty-five percent of voters want special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE to take his time on his probe into Russian election interference and "do it right," according to a new Fox News poll released Thursday.

The poll also found that approval of Mueller’s probe has fallen from 55 percent last month to 48 percent on Thursday, with the drop taking place entirely among Democrats. Eighty-four percent of Democrats approved of the investigation in the poll last month, compared to 72 percent in the new poll.

President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE has repeatedly attacked Mueller’s probe, calling it a “witch hunt” that is biased against him. He and other top Republicans have called for the investigation to end.

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Trump also claimed in a tweet last week that public opinion has “turned strongly against” Mueller

Public opinion has turned strongly against the Rigged Witch Hunt and the “Special” Counsel because the public understands that there was no Collusion with Russia (so ridiculous), that the two FBI lovers were a fraud against our Nation & that the only Collusion was with the Dems! — Donald J. Trump (@realDonaldTrump) July 7, 2018

Trump’s attorney Rudy Giuliani similarly told The New York Times last week that public opinion about Mueller’s probe is swinging toward the president.

“Nobody is going to consider impeachment if public opinion has concluded this is an unfair investigation, and that’s why public opinion is so important,” Giuliani told the newspaper.

Fox News conducted phone interviews with 1,007 registered voters nationwide from July 9 to 11. The poll has a margin of error of 3 percentage points.