The pubbies have a very narrow majority and even though the winds of change are in the air, it's hardly time to declare victory and rest on our laurels.
We're only one Jumping Jim Jeffords away from being out in front in the Senate (sans the Louisana campaign).
I think you'll find the dems in the senate will be obstinate and won't do anything to help Bush out at all.... except when saving their own political hides coincides with Bush's agenda.