Donald Trump's overall favorability ratings in 2015 are about 30 percent favorable and 60 percent unfavorable, and have not improved.

Judge against national favorability polling of Trump among all adults or registered voters in 2015 at the time of the remark (most likely mid-2015). True: polling averages (e.g., HuffPost Pollster, RCP) or major polls show roughly 25–35% favorable and 55–65% unfavorable, with no meaningful improvement compared with earlier 2015 readings. Mostly true: the figures fit but there was a slight improvement (a few points), or one figure is just outside the range. Mixed: the figures fit but his ratings had clearly improved, or one figure is clearly off while the trend holds. Mostly false: favorability was markedly different (e.g., ~40% favorable) and improving, even though it was net negative. False: favorability was net positive or close to even.

Set before the research began.

1. E1 Trump GOP Favorable Image Drops, but Still Positive Gallup · 30 July 2015

   “Meanwhile, Trump's image among all national adults continues to tilt negative, with 31% viewing him favorably and 57% unfavorably, essentially unchanged this month.”

2. E2 Trump's Image Over Last Year Stable -- and Negative Gallup · 18 July 2016

   “When Gallup began tracking Trump's favorability in July 2015, 31% of Americans viewed him favorably and 57% viewed him unfavorably, leaving 12% who had no opinion.”

3. E3 Trump's Image Over Last Year Stable -- and Negative Gallup · 18 July 2016

   “Trump's favorable rating was at its highest point of 38% in August 2015.”

Gallup's late-July 2015 release (E1) shows 31% of U.S. adults viewed Trump favorably and 57% unfavorably, "essentially unchanged this month." Both figures fall within the criteria's ranges and show no improvement. Gallup's 2016 retrospective (E2) gives the same July 2015 starting point. However, it also reports that his favorable rating peaked at 38% in August 2015 (E3), slightly outside the range and a few points higher. Because the evidence does not pin down the exact date of the remark, the verdict is mostly true rather than true.