Gallup, considered the gold standard of gauging approval ratings, polls a representative sample size of 1,500 Americans by telephone every week, with a margin of error of plus-or-minus 3 percentage points.
Trump's disapproval rating is currently at 50%, the second-lowest point it's been since the very beginning of his first term in January 2017. His disapproval ratings have been as high as 60% in previous months.
Trump's current approval rating 513 days into his presidency is on par with the approval ratings of other presidents at similar points in their first terms. President Barack Obama's approval rating was 45% at day 523 of his presidency, and former President Bill Clinton held 44% approval on day 524.