The Gallup survey of 1,019 adults was conducted April 5th through 9th and has a margin of error of plus or minus 4 percentage points. That number has fallen sharply from February, when 62 percent of voters said they thought he would keep them.
Trump's successes include the confirmation of Supreme Court nominee Neil Gorsuch and executive order rollbacks of Obama-era regulations, but he has also had significant setbacks on his promised repeal of Obamacare and his proposed temporary immigration ban. In February, a majority also said Trump can bring about the changes the country needs, but less than half hold that view now.
Most Americans do not think Trump is "honest and trustworthy", the poll found. "Opponents say he has not protected middle- and working-class Americans". Including the most recent Rasmussen survey, it had Trump's approval at 41.5 percent and his disapproval at 51.7 percent. The latest figures include 32 percent who said they strongly approve of the way Trump is performing vs. 39 percent who strongly disapprove.
Now that President Trump has carried out a missile strike in Syria and served as Commander in Chief for the dropping of the largest non-nuclear bomb ever deployed, many who criticized him can only cheer him now.
The survey also found decreasing beliefs among those polled that the president cares about average people and can manage the government effectively.
This is especially true for members of groups that didn't overwhelmingly vote for Trump.
President Donald Trump's setbacks on campaign promises like repealing the Affordable Care Act and his shifting positions on other stances look like they're catching up with him - bigly.
These views could shift again, depending on Trump's actions over the course of his presidency. Pew reports that the partisan gap on Trump's approval ratings - a 75-point chasm between the approval rating he earns among Democrats (7%) and among Republicans (82%) - is larger than that of any other president at this stage in their presidency by almost 20 points.