President TrumpDonald John TrumpFlorida GOP lawmaker says he's 'thinking' about impeachment Democrats introduce 'THUG Act' to block funding for G-7 at Trump resort Kurdish group PKK pens open letter rebuking Trump's comparison to ISIS MORE’s approval rating has dropped to its lowest level in months, according to a poll released Tuesday. 

Public Policy Polling found Trump has an approval rating of 39 percent, while 54 percent of voters disapprove of his job performance. The approval number is one of Trump’s lowest since taking office, the left-leaning firm noted. 

Forty-four percent of respondents approved of the president's job performance last month, one of his highest ratings.

A majority of voters disapproved of Trump’s handling of various issues in the latest poll. For example, 52 percent said they believe the president is a liar, 57 percent want to see his tax returns and 54 percent said Trump has not delivered on his promise to “Make America Great Again.”

Public Policy Polling’s results were released a day after a CNN poll found Trump received his highest approval rating in nearly a year. Forty-two percent of voters gave Trump positive marks in that poll.

The latest poll numbers come amid a string of personnel changes in Trump's Cabinet. Gary Cohn, Trump's top economic adviser, resigned earlier this month, and Secretary of State Rex Tillerson was forced out a short time later. Trump has since announced national security adviser H.R. McMaster is leaving early next month, and Veterans Affairs Secretary David Shulkin is reportedly set to be the next to go.

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Public Policy Polling also found Trump trailed nearly every hypothetical 2020 opponent, including former Vice President Joe BidenJoe BidenTrump knocks Romney as 'Democrat secret asset' in new video Giuliani asked State Dept. to grant visa for ex-Ukraine official at center of Biden allegations: report Perry won't comply with subpoena in impeachment inquiry MORE, Sen. Bernie SandersBernie SandersSanders seeks spark from Ocasio-Cortez at Queens rally On The Money: Supreme Court takes up challenge to CFPB | Warren's surge brings scrutiny to wealth tax | Senators eye curbs on Trump emergency powers Biden seeks to fundraise off fact he's running out of money MORE (I-Vt.) and Democratic Sens. Kamala HarrisKamala Devi HarrisHarris campaign releases web video highlighting opposition to death penalty Sanders seeks spark from Ocasio-Cortez at Queens rally Biden seeks to fundraise off fact he's running out of money MORE (Calif.) and Elizabeth WarrenElizabeth Ann WarrenHillicon Valley: GOP lawmakers offer election security measure | FTC Dem worries government is 'captured' by Big Tech | Lawmakers condemn Apple over Hong Kong censorship Sanders seeks spark from Ocasio-Cortez at Queens rally On The Money: Supreme Court takes up challenge to CFPB | Warren's surge brings scrutiny to wealth tax | Senators eye curbs on Trump emergency powers MORE (Mass.). 

Stephanie Clifford, who acts in porn films under the name Stormy Daniels and has alleged an affair with the president ten years ago, topped Trump by 1 point, 42-41, in a hypothetical 2020 election match-up. When asked the same question using the "Daniels" name, respondents picked Trump, 41 to 32 percent, however, according to the poll. 

Trump has been the subject of recent claims he had multiple extramarital affairs around 2006.

Daniels detailed her alleged affair with Trump during an interview that aired Sunday on "60 Minutes," while former Playboy model Karen McDougal shared her story late last week on CNN.

The White House has denied the women's claims.

Public Policy Polling surveyed 846 voters from March 23-25. Its findings have a margin of error of 3.4 percentage points.