I agree there's a lot more infighting within the Republican campaign than in the Democrats', but that's because there are real differences between the Republican candidates on numerous issues, whereas it is nearly impossible to discern any meaningful differences amongst the Democrats. That is not a criticism of either side, it simply points to a split between Republicans across America in general and a fight for the soul of conservatism after 8 years of Bush.
Certainly Hillary has already tried recently on a couple of occasions to poke her finger in Obama's eye, but it blew up in her face and that's the only reason she's not still jabbing Obama.
There is no doubt that if Obama wins in Iowa and/or New Hampshire, or gets really close to Hillary, the knives are going to come out. If you think the Republicans fight dirty, you must forget how the Clinton machine works. I already sympathize with Obama, who will be raped by the Clintons if he threatens her coronation.
I personally like Obama a lot but think he does not seem close to being prepared for the presidency. I can not stand Hillary Clinton and would simply hate to have her as my president for four years. Cynical, stand for nothing triangulating, etc. No. No more Clintons.
I personally believe that of all the candidates in both parties running Biden is by far the most serious and prepared president. I wish he got more traction. On the Republican side I think McCain is the most prepared, though I don't think he seems like a good manager. Romney seems freaky but from everything I read about him he sounds hyper-competent, which would be a nice change.
Yes, in the general election, if the Republican nominee looks like the sweaty, shifty, slimy, fear mongerer, they're going to lose and they should. I think, as a Republican, we would do very well with 8 years in the wilderness and we certainly deserve it.