Simple enough: what could have happened in Nixon's campaign that would've won him the White House in 1960? What I've got so far, just from gleaning wikipedia:
1. Not look like hell on the first televised debate.
2. Eisenhower not making his "if you give me a week..." comment when asked what major decisions Nixon had aided in.
3. Campaigning more efficiently instead of trying to make all 50 states.
4. Putting Rockefeller as VP (maybe, to help deliver him New York)
Anything else? Any of these seem more plausible or influential than the others?