With a POD of 1945, have an American presidency with Ronald Reagan and RFK holding the positions. It doesn't matter which one's POTUS and which one's Vice President. Bonus points if it's before 1970.
Thanks for the reference: I almost forgot my TL, mainly because the writing, if not the ideas, was crap. But yes, that is the only scenario where this is plausible unless you use prewar PODs. After all, Joe Kennedy contributed heavily to the MA Republican Party before he met FDR, and under the Tail-Gunner RFK could easily become a Republican were it not for family dynamics (and his subsumation of his own ambition for the family, which is for another thread) preventing him from making such a dramatic break.
Your TL wasn't crap; I actually was reading it through again a few days ago, and I thought it was alright. I really did like the idea of a Nixon-Kennedy administration.
Anyway, back to the OP - As far as 1968 is concerned, I'm pretty sure RB will agree that it's impossible to have Kennedy/Reagan elected by Congress. It's easy to get Kennedy nominated for president. But it's impossible to have Reagan nominated for VP. Keep in mind that Nixon and Reagan are from the same state. So, if you try to stick with major candidates, that only leaves Nelson Rockefeller, who was unnominatable in 1968 - and even if he was, he certainly wouldn't pick Reagan to be VP. So unless you get a different GOP figure to take the nomination, you simply can't have Reagan nominated for VP. Which is unfortunate; it would be fun to see President Robert Kennedy work with Vice President Ronald Reagan in the late 60s and early 70s.![]()