This is really the first election I have ever seen where I honestly think there is no way to even say, the others person perspective is valid and a respectful dialogue is warranted. Some things are just plain wrong. Anyone voting republican this time is just plain wrong. There can be no possible justification for such a vote.
Do you really think Obama will be any better than McCain? Do you really not think politics runs on cycles? If Bush had been a Democrat, you would be calling people stupid for voting for Obama.
The biggest issue with McCain is his age and his running mate. If he was 10 years younger, with a smarter choice of VP, he'd be in with a good chance, and perhaps with good reason.
Personally, politics makes me angry. I'm an Australian, and there's no way you'll ever get me to say K Rudd is any better than Johnny. He's new. And younger. That's it. Politics is a losing game.