That number with kennedy was a crock too. He only ranked that high because he was assassinated. He botched the Bay of Pigs horribly, and other than his Tax cuts, did very little good for the country. Those high marks for him were sympathy because he was assassinated, not because he was a great President. He got us into Vietnam after all.
Well it is obvious the majority they polled were liberals and independent voters who vote mostly for democrats anyway.