Maybe Billary want to be out of the limelight, while Obama loses this election. Then Hillary can ride to the rescue in 2012. I have a feeling that Billary don’t want any part of the Obama campaign, they want him to crash and burn on his own. They don’t want to be tarred by association with what they think will be a losing campaign.
And they like their chances in 2012 against a 75 year old John McCain, or maybe a new Republican if McCain declines to run for re-election in ‘12.