Not the gift of gab, but Trump is a first-rate conman who reads an audience very well. He has no use for facts. He knows so few of them.
He feeds an audience what they want to hear, even diverting, often clumsily, from a subject he was talking about.
I wonder how smart he is because of his limited vocabulary and lack of interest in learning. However, he has followed the blueprint to a dictatorship very well. The plot is to make make people distrust institutions, academia, government, politicians, and government agencies. Once you blame all them for what's wrong, you are open to what remains: a wealthy conman who wants complete power. He is a serious threat to the american system.