President Donald Trump may have entered office with the full support of his followers, but a new poll has found key groups of Trump supporters are having a change of heart.

A Quinnipiac University national poll released on Wednesday found that core demographics of the president's base are eroding. In just over two weeks, Trump has lost noticeable support among Republicans, white voters and men.

The new survey found 52 percent of men disapprove of the job Trump is doing, while just 43 percent approved -- compared to a March 7 poll that reported only 45 percent of men disapproved and 49 percent approved.

Images from Trump's campaign rally in Nashville



10 PHOTOS Trump campaign rally in Nashville, Tenn See Gallery Trump campaign rally in Nashville, Tenn U.S. President Donald Trump pauses during his remarks at a rally at Municipal Auditorium in Nashville, Tennessee, U.S. March 15, 2017. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY U.S. President Donald Trump (C) joins singer Lee Greenwood onstage as he sings "God Bless the USA" to introduce Trump at a rally at Municipal Auditorium in Nashville, Tennessee, U.S. March 15, 2017. REUTERS/Jonathan Ernst U.S. President Donald Trump holds a rally at Municipal Auditorium in Nashville, Tennessee, U.S. March 15, 2017. REUTERS/Jonathan Ernst U.S. President Donald Trump concludes a rally at Municipal Auditorium in Nashville, Tennessee, U.S. March 15, 2017. REUTERS/Jonathan Ernst U.S. President Donald Trump delivers remarks at the Hermitage, the historic home of 19th-century U.S. President Andrew Jackson, on the occasion of the 250th anniversary of Jackson's birth, in Nashville, Tennessee, U.S. March 15, 2017. REUTERS/Jonathan Ernst US President Donald Trump speaks during a rally in Nashville, Tennessee on March 15, 2017. Trump vows to challenge travel ban block at Supreme Court if needed he said during the rally. / AFP PHOTO / NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images) US President Donald Trump speaks during a rally in Nashville, Tennessee on March 15, 2017. Trump vows to challenge travel ban block at Supreme Court if needed he said during the rally. / AFP PHOTO / NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images) US President Donald Trump looks on as he speaks during a rally in Nashville, Tennessee on March 15, 2017. Trump vows to challenge travel ban block at Supreme Court if needed he said during the rally. / AFP PHOTO / NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images) US President Donald Trump looks on as he speaks during a rally in Nashville, Tennessee on March 15, 2017. Trump vows to challenge travel ban block at Supreme Court if needed he said during the rally. / AFP PHOTO / NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images) People wait for US President Donald Trump to speak at a rally in Nashville, Tennessee,on March 15, 2017. Trump vows to challenge travel ban block at Supreme Court if needed he said during the rally. / AFP PHOTO / NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images) Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

Republican support for the 45th president is slipping in the wrong direction. Since March 7, GOP support for Trump has dropped 10 percent from 91 to 81.

A similar shift can be seen in the support of white voters. The new poll finds 50 percent of white voters disapprove of Trump's handling of the presidency, while 44 percent approve. In early March, Just 45 percent of white voters disapproved of Trump, and 49 percent approved.

"Although taking a beating, he keeps on tweeting to the point where even his fiercely loyal base appears to be eroding," said assistant director of the Quinnipiac University Poll Tim Malloy.

"Most alarming for President Donald Trump, the demographic underpinnings of his support, Republicans, white voters, especially men and those without a college degree, are starting to have doubts."

SEE ALSO: Poll: Majority prefer Obamacare to Trumpcare

The Quinnipiac poll found that, overall, only 37 percent of respondents approve of how Trump is doing his job. According to the same poll, a majority of 60 percent feel the president is not honest.

National poll - #PresidentDonaldTrump strengths and weaknesses pic.twitter.com/kUIY2aazz5 — Quinnipiac University Poll (@QuinnipiacPoll) March 22, 2017

There are several factors that may have contributed to the drop in Trump's approval ratings over the past couple weeks. The Republican push to repeal and replace Obamacare with the GOP's American Health Care Act has been dominating headlines and garnered pushback from both Democrats and conservative Republicans. The vote was expected to take place on Thursday but was postponed, causing some to speculate that Trump couldn't garner the votes necessary to pass the bill.

The president has also been battling to reinstate his proposed travel ban after it was again halted by federal judges in Hawaii and Maryland on its second time around. The revised immigration order would block travelers from six Muslim-majority countries -- Iran, Sudan, Somalia, Libya, Somalia and Syria.

In the midst of it all, the president has been advocating for the approval of nominee Neil Gorsuch to the Supreme Court. Gorsuch's Senate confirmation hearing wrapped up on Thursday and seemed to take a backseat for much of the week to the House Intelligence Committee's investigation into Russia's alleged interference in the 2016 election.

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