Don't be so sure, jc. I fear Hillary more than any democrat. She is the darling of the media, which gets her more positive publicity for free than any republican candidate could pay for. The sheeple in the northeastern megalopolis and those in the People's Republik Of Kalifornia adore her. She would win the popular vote in most elections, although perhaps not this one. Bush can only win if the economy improves, however.
If she chooses to run, she would be the nominee since she consistantly scores higher in the polls than does any other current candidate. My bet is that she chooses not to run this time and runs in 2008, and I'll bet she wins then. The only republican that would have a snowball's chance against her in 2008 might be Bill Frist.