I'd be shocked if they weren't. They *are* the party faithful, you know. JFK has to sell to people who are registered independent, people who don't yet know how they will vote. That was the mission behind this speech. The crowd is there to make it appear as if he hit a home run with someone other than what they really are.
Now they're playing Van Halen. Does anyone honestly associate Kerry with U2 or Van Halen songs? What a joke!