Via Kaus, we find this LA Times report (registration required), which just cracked me up:

[M]ost Americans recoil from efforts to blame Bush for the [September 11] attacks. One leading Democratic interest group recently asked a focus group in Florida to respond to a potential television ad accusing Bush of negligence in failing to stop the attacks. The result was volcanic — against the ad.

"They were so angry I thought they were going to turn the tables over," said a Democratic operative who watched the session. "It was a very polarizing ad, and it pushed people who were on the fence decidedly away from us."