You know something is going on when well placed Republicans from previous administrations begin to bail out on their Party's candidate. Douglas W. Kmiec threw his support to Obama back in March of this year.
Professor Kmiec, now a Professor of Constitutional Law at Pepperdine University, was head of the Office of Legal Counsel (U.S. Assistant Attorney General) for both President Reagan and President George H.W. Bush. Here's his endorsement.
Most thoughtful Republicans and traditional conservatives have good reasons to support Senator Obama as a better choice now that the neo-conservatives seem to be carrying Senator McCain away in a flood tide.
I've seen a lot of Republicans and traditional conservatives coming out in support of Obama, but nary a Democrat who could stomach McCain. That alone is pretty interesting.