A conservative Republican who was elected the Governor of Massachusetts (Taxachusetts) should get some recognition.
I think Mark Warner is the best right now personally.
The idea of a Warner or a Romney in the White House is pretty outlandish for both parties. Both aren't the good ol boys of their respective parties so its going to be tough to get them nominated. Although I could see the Republicans in 2008 turning to a non-GWB like candidate to improve their image, which would be good.
For the Democrats, I don't have much faith. I expect some kind of Clinton, Biden, Edwards, or hell, even Kerry again. Basically the "business as usual" Democrats that have led them to being called spineless cowards.
For the Republicans, I have even less faith. I imagine it will be John Ellis Bush, Santorum, Frist, McCain. Basically the idiots thats wrecking the United States.
Maybe I should be more optimistic but both parties aren't giving me that hope that their 2008 candidates will be decent.