Arlen Specter thinks having Barack Obama, Ed Rendell, the Pennsylvania Democratic Party, most of the big institutional progressive organizations, and labor unions (despite backstabbing them on EFCA) will be enough to win the primary.
Yet despite all that, Pennsylvania Democrats appear ready to make up their own minds. And they seem to be turning away from the guy who frequently forgets what party he belongs to.
I wouldn't want to be Specter with those trendlines.