The charts above reflect the results of a recent Quinnipiac University Poll -- done between January 9th and 13th of a national sample of 1,209 voters, with a margin of error of 3.3 points.
During the presidential campaign of 2016, Donald Trump told voters that he could solve America's problems because he was a great negotiator. But he has not been able to complete any negotiations of substance. He claimed that he had negotiated North Korea into giving up its nuclear weapons, but that was not true. North Korea continues to refine nuclear material, make nuclear bombs, and make missiles capable of carrying those bombs.
He claimed to have negotiated a great deal to replace NAFTA. Another lie. The new deal is just the same NAFTA with some minor changes.
And after withdrawing the U.S. from the Paris Accords and the Iran Treaty, he has utterly failed to negotiate a better deal (or any deal at all) for either of those.
The truth is that Trump is a terrible negotiator. Why? Because he cannot be trusted. He lies continuously, and even when he agrees to something, he often changes his mind and breaks his word. The leaders of other countries know this, and so do American voters (see charts above).
Here's how Noah Bierman describes it in the Los Angeles Times: