With the possible exception of Elaine, none of the characters would bother to go out and vote. Kramer would tell everyone to vote, but then forget to do so himself. Jerry and George just wouldn't care.
George would vote, but only if it would impress his current girlfriend. Jerry would just wander by the precinct and get into random discussions with voters, not only missing his own chance to vote, but preventing others from getting in on time.
"With the possible exception of Elaine, none of the characters would bother to go out and vote."
Didn't George's father refuse to vote because he was a naturalized American, was disqualified from being President and, in protest, refused to participate in the process?
A great episode was when Kramer took part in the AIDS walk. He refused to wear the ribbon and was beaten up by a gay gang.