A hypothetical question for Democrats?

Is there any possible pair-up (2008) that you can think of where you would have voted for the candidate from the opposing party?

You can choose ANY living politician from either party.

For example:

If it had turned out to be Hillary against Romney, I would have chosen Hillary (probably)

If it had turned out to be Lieberman against Romney, I would have chosen Lieberman (definitely)

If it had turned out to be Barney Frank against Thad Allen (was that his name), I would have shot myself! (definitely)

Background: I consider myself a political Mugwump. I voted for McCain, I really liked Bush. But I sent money to Hillary this year before the primaries were over, none to Republicans.

Just a fun question, put your imaginations in overdrive!