The next question is: Who would that be. High on my list would be Sarah Palin if she is willing, or Dr. Ben Carson if he is willing, but not because they represent diversity. We've seen what a diversity selection looks like and how it performs. Either would be intelligent, capable, patriotic, and a force to be reckoned with, and that is what matters, not the gossip details that Carson would make the second minority choice in a row or that Palin would be the "First Woman".
This is one of the problems of modern conservatism: Not being able or willing to conform, in any appreciable way, to modern culture, or better yet, to shape it. If we don’t do something, and fast, Hillary Clinton is going to succeed Barack Obama. It’s as plain as the nose on your face, yet we sit here and cry about the folks wanting a woman president, rather than getting our candidate ready to face Hillary. Or making it clear that Ted Cruz truly is Hispanic, no matter what the media says. We let the press paint Zimmerman as a “white Hispanic” when he was actually blacker than the “first black president” and we’re going to get steamrolled again if we don’t get going.
Beware of Dr. Carson. I wouldn't be too quick to jump on the Carson bandwagon just yet. He apparently doesn't understand the Constitution very well.
"Carson has also expressed some views at odds with most conservatives, such as supporting banning semi-automatic weapons in large cities." Wikipedia
He has taken that position more than once which is cause for concern.