Like you, I cannot in good conscience vote for Hillary or, perhaps worse, Obama. But neither can I in good conscience vote for McCain.
So, that leaves third party, or write-in, or leave it blank. And vote for the rest of the Republicans on the ticket unless they have similar problems.
But Ann is more right than wrong about this. Hillary is better than McCain. She has talked pullout from Iraq because she's defending her left flank against her rival Democrats and avoiding offending the base any more than she has to. But some Democrats fight wars when they have to. In fact, almost every major war we have fought in has been presided over by Democrats. They actually have an advantage, because the media doesn't fight them every step of the way.
Yes, she would appoint bad SCOTUS judges, but so would McCain. She would empower the UN to kill babies with our tax money, but so would McCain. There's no avoiding it unless we get some kind of miracle here and somehow nominate a better candidate whom we can vote for.