McCain Still Looking for Republican Support

I thought that this post from Rich Lowry says it all:

Has this ever happened before? This is kind of amazing. I'm looking at CNN exit polls at the numbers for self-identified Republicans. McCain lost self-identified Republicans by a point in New Hampshire (oddly, he won registered Republicans); he lost self-identified Republicans by 14 points in Michigan; and he tied among self-identified Republicans in South Carolina and Florida. In other words, McCain is close to the presumptive nominee GOP nominee without having won self-identified Republican voters anywhere. What an extraordinary—and utterly unlikely—path to the nomination. Presumably, with his front-runner status enhanced, McCain will now begin to win self-identified Republicans, but he has pulled the political equivalent of an inside-straight to get here.