From the American Conservative:
I’m voting for Barack Obama this November for a very simple reason. It is hard to imagine a more disastrous presidency than that of George W. Bush. It was bad enough that he launched an unnecessary war and undermined the standing of the United States throughout the world in his first term. But in the waning days of his administration, he is presiding over a collapse of the American financial system and broader economy that will have consequences for years to come. As a general rule, democracies don’t work well if voters do not hold political parties accountable for failure. While John McCain is trying desperately to pretend that he never had anything to do with the Republican Party, I think it would a travesty to reward the Republicans for failure on such a grand scale.
Works for me.