Did you know that one day, there was a NYTimes Crossword Puzzle that had two correct solutions? The clue itself read "Lead story in tomorrow's newspaper (!), with 43A:" At the time, of course the election wasn't decided yet, so you could fill out the crossword depending on who you thought would win and and still fit with all the other clues.
See more about what the other clues were: http://www.crosswordunclued.com/2009/01/nyt-election-day-crossword.html