Bredesen is a fine governor but not really much of a Democrat. He's a Tennessean who was mayor of a Democratic city a had to be a Democrat because his base is. He is an able manager and has done a good job protecting and enhancing public schools. He avoids any discussion of abortion, gay rights, etc. Which is smartfor Tennessee, I guess, but I think he'd be a tough sell in the blue states.
He is affable but boring; I cannot see him generating much enthusiasm on a national level. He could be a great middle of the road manager, but a lousy candidate.
that sounds kind of like Clinton actually, he could be far more liberal in a campaign or as president. of course Clinton apparentely had much more charisma.