THESE THINGS ARE TRUE:

• In December 1960, a suicide bomber paused fatefully when he saw President-elect John F. Kennedy's wife and daughter come to the door to wave good-bye. . . .
  
• In June 1968, Robert F. Kennedy declared victory in California, and then instead of talking to people in another ballroom, as intended, was hustled off through the kitchen. . .
• In October 1976, President Gerald Ford made a critical gaffe in a debate against Jimmy Carter, turning the tide in an lection that had been rapidly narrowing.

But what if it had gone the other way?
THEN EVERYTHING CHANGED imagines what would happen then…

Jeff Greenfield, a veteran political, media and culture reporter, Jeff has served as senior political correspondent at CBS News since May 2007. He contributes to the CBS Evening News with Katie Couric, The Early Show, CBS News Sunday Morning and other CBS News broadcasts, as well as CBSNews.com.