Trump's approval rating stable at 45 percent

Most Americans surveyed in a Hill-HarrisX poll released Wednesday disapprove of the job that President TrumpDonald John TrumpFacebook releases audit on conservative bias claims Harry Reid: 'Decriminalizing border crossings is not something that should be at the top of the list' Recessions happen when presidents overlook key problems MORE is doing, but he has not lost any ground recently.

Forty-five percent of registered voters in the March 18-19 survey said they approved of how Trump is conducting his official duties. Fifty-five percent disapproved.

Trump's job approval rating has been quite stable in recent weeks. He received the same ratings during the previous Hill-HarrisX surveys conducted on March 5-6 and Feb. 17-18. While the president has not lost any support, he has also not gained any, suggesting that the public has settled into its opinions about Trump, despite his recent remarks about immigrants "invading" the United States and insulting the late Sen. John McCainJohn Sidney McCainMcCain's family, McCain Institute to promote #ActsOfCivility in marking first anniversary of senator's death Arizona poll shows Kelly overtaking McSally 3 real problems Republicans need to address to win in 2020 MORE (R-Ariz.), which angered many of his critics.

"I guess if the Mueller report came out and it said 'we absolutely found nothing, anywhere that was negative,' I'm not sure that would even do a whole lot," Lee Miringoff, the director of the Marist Poll, told Hill.TV on Wednesday, referring to special counsel Robert MuellerRobert (Bob) Swan MuellerMueller report fades from political conversation Trump calls for probe of Obama book deal Democrats express private disappointment with Mueller testimony MORE's investigation.

"We're in a polarized era that didn't start with Donald Trump and Hillary ClintonHillary Diane Rodham ClintonThe exhaustion of Democrats' anti-Trump delusions Poll: Trump trails three Democrats by 10 points in Colorado Soft levels of support mark this year's Democratic primary MORE, we've been going that way since the early 90s," Miringoff added. "There's very few people on the fence and when it comes to Donald Trump, there's even fewer."

Younger voters gave Trump his lowest marks in the latest poll, with 61 percent disapproving of his presidential performance and only 39 percent approving.

Republicans continue to give the president strong support with 82 percent approving of him and only 18 percent disapproving. Those numbers were almost the exact inverse of Democrats' views. Eighty-three percent of Democratic respondents said they disapproved of Trump while 17 percent viewed him positively.

Independent voters were mostly negative about Trump's job performance, but not by as significant of a margin as Democrats. Sixty percent said they disapproved of Trump's official conduct while 40 percent approved.

—Matthew Sheffield