When he saw that the money machine for GWB would probably overwhelm his campaign, he dropped out. It was like he wasn't going to fight that kind of fight or waste people's money that way.
About his speaking voice. I heard Quayle speak when he was VP, at the 1989 West Point graduation. He spoke with pride about how well those he had nominated over the years had done. He gave an informed and passionate speech about the threats the world faced, and what had to be done to keep US policy ahead of the problems. There was absolutely nothing to complain about with his delivery, knowledge or speaking voice.
I hope that Mr. Trump brings Dan Quayle on board, to help in preparing a new generation of class-act people to straighten out foreign affairs.
I didn't say there was anything wrong with his content, but he certainly did not have a John Wayne sound either and according to all the Palin haters on this forum it matters.