UPDATE
DES MOINES, IA–Reacting to the new McCain spot–featuring Barack Obama praising John McCain for his work on climate change, Obama inserted some new language in his stump speech:
“Just this morning, the McCain campaign put out an ad that showed me praising him and Senator Lieberman for their work on global warming – as if there’s something wrong with acknowledging when an opponent has said or done something that makes sense. I think we need more of that in Washington. I don’t disagree with Senator McCain on everything, and I respect his occasional displays of independence.”