Great ad. Takes on McCain's credibility without being sleazy like the ads McCain has been running.
Update: I always thought talk of an electoral college tie was ridiculous, but I am now officially wrong about that. If you look at today's pollster.com state-by-state composites, and give each state to the candidate who is ahead, the final outcome is 269-269. Wow. Of course, things are likely to change between now and election day. And polling is a snapshot, not a perfect predictor of an end result. And, in any case, a tie would be ok because the choice would then go to the House of Representatives, where Obama would most likely win. Still, impressive.