Rhetoric in Politics

In Kennedy's commercial, http://www.livingroomcandidate.org/commercials/1960 they use a catchy jingle, repetition, to motivate their audience, every day Americans.
The jingle is easy to get stuck in your head; I was singing it after I watched it. Also, the jingle is not just gibberish; it brings up relevant qualities in Kennedy: he's experienced, open to new ideas, and ready to take action. The jingle then puts the onus on the audience. They repeat the line "It's up to you. It's up to you. It's strictly up to you."
This commercial uses lots of repetition to motivate their audience. They know that ven if they make good points, its useless if no one remembers the ad or who it was about. This is probably why they say the name Kennedy 27 times in a 60 second ad and have his name at least 40 additional times on the screen. I think they're trying to get a point across...