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First of all, what could have happened during (and shortly before) the Democratic Primaries that could have led to LBJ winning the nomination and then choosing JFK as his running mate? How much better or worse would an early Johnson candidacy fare against the likes of Richard Nixon?

Second: Say that in spite of all the odds, the Johnson/Kennedy ticket wins the election with a margin just as or even more narrow as IOTL. What would an early Johnson administration look like? How does LBJ's 1960 victory alter the course of the Cold War? And Kennedy, with him as Vice-President ITTL, what are the chances of him eventually becoming a POTUS in his own right?
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