The Obama campaign has released a response ad to the "3AM" spot already, which is airing in Texas. The link is after the jump.
Obama Ad Response
I'm extremely impressed at how hard they've slammed back at this ad today. A punishing media statement, a public appearance statement, throwing an earlier ad on until a new one could be finished. Incredible, with phenomenal message discipline.
If Kerry had approached the Swiftboats and other attacks with this measure of response, they never would have stuck. The Obama Campaign seems like they read every book, every report, watched every film and interviewed every involved party on the 2004 AND 2006 elections and has assembled the anti-GOP MEGA-playbook. I have to imagine that the GOP has been impressed with the level of response that Obama has put out to this advertisement, probably makes their challenge that much more difficult.
This ad completely destroys the Clinton one, and it will probably get twice as much airtime.