Not to say I'm voting Democrat (because I'm likely not), but I think the only realistic chance for the Democrats to take the Presidency in '08 is if somehow John Edwards miraculously wins the nomination. The problem with that is he's sitting in 3rd place right now, and with the "scandal" of him using campaign funds to finance his $400 haircuts, many are now questioning his fiscal responsibility.
I honestly don't think Hillary Clinton can beat a Republican for president. She has created way too many enemies. I have read on both CNN and FOX websites that if you aren't supporting her now, you probably won't be supporting her by the time the election rolls around. People seem to think that she will pull some of the conservative women away from the Republicans, but wouldn't the opposite be true, that she'd also repel liberal men/women who don't want to see a women become President? And before you think I'm spinning my wheels on liberal women not wanting to vote for a woman president, I have had conversations with feminist liberal women at Iowa State who would not vote for ANY woman candidate, much less Hillary Clinton, because they "didn't want them to have the launch codes to the nation's nuclear arsenal when she's going thru PMS." Honest to God, a feminist liberal woman said that exact thing to me.
The problem with Barack Obama is his experience - he has (as of now) 2 years in the Senate (as well as local political experience). Is that enough to develop his own national policies? I don't think so. I have read on both CNN and FOX websites that they believe Obama is losing momentum mostly because of his experience, but also because he rests so far on the left that he is out of touch with a good number of Americans.
As we've learned in both 2000 and 2004, it takes the Democrats a lot more than winning California and New York to win the Presidency. This is why those on the far left will have problems winning - it's difficult for them to win the so-called "flyover" states because their values tend to not match up with the majority of those that live in those states (If you remember, basically everything from Montana south to Arizona, East to Florida, and up to Virginia, Ohio, and Indiana was solid red). IMO, if the Democrats want to win the Presidency, they're going to have to nominate a more moderate candidate to steal states such as North and South Carolina, Virginia, Florida, Ohio, and Iowa. IMO, that leaves John Edwards, but like I said, I don't think he can get the Democratic nomination. We'll see what happens a year and a half from now...
Honestly, I'm a fan of Duncan Hunter. His beliefs closely match my beliefs. Unfortunately, I don't think he can win the Republican nomination, so as of right now I have no idea who I'm voting for... (and yes, if Hillary does happen to win the White House, I'm going to consider a move to Canada. I'll even consider Mexico...)