According to Wikipedia (a spotty source at best, but let's roll with it), Henry "Scoop" Jackson was the first choice of then-Presidential candidate John F. Kennedy for VP. Kennedy obviously chose Lyndon B. Johnson instead, out of a belief that a southerner was essential to winning the election. But let's say Kennedy ignored this instinct, and went with Jackson after all. Does the Kennedy/Jackson ticket win? What does their support look like in the south? Could this deadlock the EC, or would Nixon/Lodge ultimately defeat them?