Like anyone else considering the GOP nominees, I thought Cain was an interesting character, though probably not polished enough to be an influential leader with the ability to clean up Washington. But he was a guy with the potential to win votes: He was the one who could have taken black votes away from Obama, and he was a non-politician who politics-hating Americans might have considered sending to the White House.

But with his remarkable shot to the top of the polls, of course there was nowhere to go but down.

And now, there's no way for him to go but out.

Allegations of an extramarital affair is the last straw to Cain's reputation and makes the conservative ideals he's running on as moot of a point as what to get Kim Kardashian for a wedding present. Usually, these kinds of allegations happen during a politician's term and there's not much to do about it (except in Clinton's case). But frankly, if people know about this kind of behavior during a campaign, I'm going to have to argue they'd make a stupid decision for voting for him.

My position is—and always has been— if the most important person in his life can't trust him, then how can the rest of the country? Argue all you want on the other side, but I wouldn't be a stand-by-her-man kind of gal, not even in the polling booth.

Someone like Cain is obviously fueled by passion, but lacks stability. Romney's got the opposite problem, which is why voters—despite him being the most viable candidate—aren't all that pumped about him. Romney also certainly has the most conservative personal values of the choices (remember, he's not the one who served his ailing wife divorce papers while she was in the hospital)—but voters will have the last word.

But for Cain, there's no redemption left to earn. Since the allegations, his famous climb in the polls resulted in a famous decline.  No one in the spotlight is immune to personal attacks, but when there's that much smoke, there's almost always fire. And if we stick by him, all we are gonna get is burned.