From:
http://www.americanpresident.org/history/johnfkennedy/
"At a gridiron dinner in 1958, Jack was secure enough to make a crack about it. "I have just received the following wire from my generous daddy," he quipped. "Dear Jack-Don't buy a single vote more than is necessary- I'll be damned if I'm going to pay for a landslide." As it turned out it would be one of the closest elections in American history."
From:
http://www.anecdotage.com/index.php?aid=5989
"Crushing Victory?
John F. Kennedy's father, Joseph, was a prominent banker and industrialist. JFK once received a curious telegram from the older man during one of his election campaigns: "Don't buy a single vote more than necessary," it read. "I'll be damned if I'm going to pay for a landslide."
[This was one of Kennedy's favorite stories. (On another occasion, the elder Kennedy remarked, "We're going to sell Jack like soap flakes.")]"