The problem with lots (not all) of conservatives is that they can't speak well - not great public speakers...someone like Reagan, who was great at public speaking, wrote some of his speeches himself, doesn't come along that often..maybe it's because most conservatives are not lawyers..(ch) anyway, but that how public judges intelligence nowadays..
I think Bush was better before his presidency, and even in the beginning, but then got so much on his plate, that giving great speeches was not his first priority..funny his bro Jeb, is a much better speaker, doesn't have the Texas accent, and, I think, is pretty bright..
IMO liberals are just better at demagoguery...