You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
alternatehistory.com
Let's say Kennedy is voted out in 1964 or term-limited in 1968...
How long does his natural life keep him? How much does he age? Does he have a successful post-presidency? What causes does he remain behind? How strongly does he support his designated successor in 1968? (Assumable Humphrey, or Johnson if his health is better.) When do his infidelities come forward? Do they affect his marriage? Do his kids end up different with a living father? Does RFK still run? Ted? Etc. etc.
Also for discussion: Kennedy loses in 1960 but remains in the Senate.