Not at all. What kept Clinton in office was "I feel your pain." In short, his connection to the folks. Kerry doesn't have that. He has the polish, but not the connection. Gore had the polish, too -- but also not the connection. Some of the folks trusted Clinton -- and Clinton took a lot of what were essentially Republican positions to help them out. There is not a single indication in any poll that Kerry enjoys that trust or ever has and he's inarguably the most liberal candidate in modern times. Clinton was a dog, but he was a consistent dog. Not so Kerry. Plus, Clinton pulled Reagan Democrats in the South. Kerry isn't even making a blip there and nothing that he said tonight will change that. Your cause-effect analysis is faulty.
I worry more about JK's party trying to replace him.