AHC: Southern Democrat '60

If you mean someone from the Deep South, John Sparkman is probably going to be the closest you can possibly get, and even then it would be with immense difficulty, if not impossible.
 
Taft is the Republican nominee in 1952, Stevenson beats him based on his isolationist policies and his failure to adequately defend them, with the economy booming and uncertainty abroad Stevenson is elected narrowly again in 1956. However, with the 1959 recession and the Democrats suffering from extreme incumbency fatigue, no-one seriously thinks 1960 will be a Democrat year, all the potential front runners sit the election out, with John Sparkman being nominated as a sacrificial lamb. Sparkman has no illusions about his chancances but is willing to take on the role regardless as a means of giving a national platform to his Dixiecrat positions.
 

Robert

Banned
What about John C. Stennis? He opposed McCarthy, so the Left might have supported him. Given Democratic politics in 1960s his segregationist attitude wouldn't have hurt him in the party. His support of the Navy might have given him some National Security credentials.

Let's say Stevenson in an act of desperations picks him as his running mate in 1960. Stevenson loses but Stennis is in position to get the nomination in 1960. He beats Kennedy but picks him as his running mate.

Then Richard Nixon is elected, and Kennedy runs in 1964.
 
This......
For the sake of argument, I'll try to build a case for Sparkman.

He stayed out of the running in '56, and for good reason. The only event that should be changed here would be Kennedy's rather powerful campaign for the Vice Presidential nomination; however, that isn't really possible considering many politicos were pushing for his nomination long before the convention, and if Adlai were to remain as with custom in choosing a running mate, it likely would have been Kennedy.

It might be then for the best that Kennedy does win the nomination, buts gets marked by the defeat that Stevenson would suffer at the polls.

Sparkman, confident that he might be able to win against Nixon, begins building support among the Southern Delegations. Lyndon Johnson proves to be his only major rival in contesting that area, but his reluctance to leave Washington proves largely fatal to any manner of success he might have achieved. Still, Sparkman has extreme difficulty building a base of support outside the South given his signature having been placed on the Southern Manifesto, and it becomes quickly apparent that Kennedy may be the favored nominee, despite his perceived "flaws" as a national candidate.

In short, we need to eliminate him from contention.

Killing him is too cliche, and we want to avoid that.

Wisconsin seems the clinch for such a screw-up. Humphrey will be ahead in the polls but a comfortable amount given there will be some ammunition from Kennedy's campaigning for Stevenson in '56, and Kennedy will be working harder. Kennedy due to his Addison's is not able to properly provide steroids for the added stress and strain; he should know this, but let us say that he manages to slip up on this note. While campaigning in Wisconsin, a few days before the primary, he collapses from exhaustion; this has happened before in OTL. The local headlines are filled with inquiries as to Kennedy's health. Humphrey carries Wisconsin by a large margin, and Kennedy's campaign effectively ends.

I need time to think on the rest.
 
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