Actually, there is no contest. Carter jumped the shark, appropriately enough, in his presidential debate with Ronald Reagan. Carter claimed that before the debate he had asked his daughter Amy, who was about 8 years old, what she thought was the most important issue and she had answered without hesitation "nuclear nonproliferation." I recall people literally guffawing to one another the next day about how totally unbelievable that was.
Oh yes, I do remember that. I agree that is a classic.
Please don't forget the joke about Montezuma's revenge to the President and dinner guests of Mexico in Mexico. What a dork.
Actually the Peanut President should have listened to Amy. The plan he negotiated along with Albright has given nukes to the North Korea and now nuclear proliferation is high on our list of problems thanks to that POS from the otherwise great state of Georgia. (Ooooops I forgot about Max Cleland didn't I?)