Yes, he is probably busy with his senate reelection campaign. And he probably doesn't want to peak too soon, like Howard Dean did in '04.
The Dean thing in 04 was unbelievable to watch. I somewhat credit Christie Vilsack for the Kerry victory. She and her husband stayed out of the fray for a long time and then she did a bus tour with Kerry toward the end and that seemed to turn the tide. The location of the Dean Scream speech is about 5 blocks from where I live and I chuckle ever time I drive past the place.
Exactly. All this talk about the White House is generating criticism from the RAT opponents in his Senate race.