Sure, there's still time for Obama and Edwards to be "out of the running pretty early on", but I now doubt that'll be the case, at least for Obama. Biden looks like he's toast, so at least in baseball terms, I'm batting .333 which is pretty good if I'm David 'Papi' Ortiz, but I'm not. It's a crappy average if you're a political analyst, so it's a good thing I'm not one of those either. And it doesn't look like Gore's entering the race any time soon, so *bzzzzzt*
I suspect that Obama, Biden and Edwards will be out of the running pretty early on, and the race for the nomination will come down to Comrade Hillary and (wait for it!)...Al Gore. Yes, that single biggest contributor to anthropogenic global warming by virtue of his own hot air, Gore will enter the race. I'll go out on a limb now and predict that he'll get the nomination. Remember you heard it here first.
McCain: I still kind of like the guy, but his patented Maverick-ness has him plunking a discordant tune with most right-of-center voters like myself.
Romney: While he seems a bit too polished and slick for my taste (he's got the Republican version of John Edwards' hair style), I've yet to see any reason of substance to not support him.
Thompson (Fred): Since he only officially entered the race last night, we've not heard much more from him than broad generalities. While I was excited about Fred early on, his little game of hard to get coupled with his staff instability has me a bit, well, less excited. Now that he's in it for real, I'll watch and reserve judgment for the time being.
And, just for you Ron Paul fans, some recent poll numbers for the Republican candidates: