I think the most damaging...

...thing about Mitt Romney's comments concerning the 47 percent of Americans who don't pay federal income taxes is that it raises the question (again), "Who is Mitt Romney?"

Is the Mitt Romney in the video clip the real Mitt Romney? Is this what he really believes? Or was he just telling a roomful of big donors what they wanted to hear in order to part them from their money? What do you think? (I have no idea.)

And that's the problem. Because after years and years (and years) of running for president, the American people still don't know who the heck this Mitt Romney guy is. What does he stand for? What does he believe? Is there anything there? Or does this guy just want to be president so bad that he'll say anything to get elected? And, if so, what in the heck would he do once in office?

This doesn't just scare Democrats; it scares Republicans.