James Joyner is unsure of his vote:
Having voted Republican in every presidential race since I was first eligible (1984), there’s a non-zero chance that I’ll find myself unable to support the nominee this year. And that’s despite very intense disagreements with President Obama on core policy issues. If they lose me, they’ll find themselves on the other side of a Mondale or Dukakis level landslide. And likely conclude that their problem was being insufficiently true to their core principles.
Which is why it may get far worse before it gets better. Can you imagine Mike Huckabee's foreign policy? Or Sarah Palin's diplomacy?