For LBJ, Ford, Ike, JFK, and Dukakis. I love the variation in style, which, in each case, belongs so clearly to its decade.
I don't agree with John Dickerson that these are all great ads. I didn't remember that Dukakis put out that "heartbeat away" ad. Man, that was in poor taste. The Ford one was poignantly pathetic. The JFK ad was incredibly boring. The Ike ad was similarly boring but fascinating to us today because of the very old-fashioned presentation of the woman's role. That leaves Johnson's anti-Goldwater ad. I loved that one.