John Kennedy's election was a close call, Barry Finn, a very close call, and there were strong suggestions of vote laundering by the Democratic machine in Chicago. Kennedy may well have been elected by fraud.

I'm not saying this because I liked Nixon better. I liked Kennedy WAY better than I did Nixon, and I'm glad that Nixon was not elected in 1960.

Direct quote from Wickipedia on the 1960 election:

"The electoral vote was the closest in any presidential election dating to 1916, and Kennedy's margin of victory in the popular vote is among the closest ever in American history. The 1960 election also remains a source of debate among some historians as to whether vote theft in selected states aided Kennedy's victory."