According to this piece in the Washington Post, that's the question that is starting to panic the Republican donor base and the insiders in Washington. I love this anonymous quote...
“We’re potentially careening down this road of nominating somebody who frankly isn’t fit to be president in terms of the basic ability and temperament to do the job,” this strategist said. “It’s not just that it could be somebody Hillary could destroy electorally, but what if Hillary hits a banana peel and this person becomes president?”
That's a fascinating quote, isn't it? That's a Republican saying, in so many words, that he fears a Republican presidency more than a Hillary presidency.
Of course, when it gets out to Trump and Carson supporters, they'll just take it as proof that they need to stick with their guy.