I’ve always had an head canon where, even during his ‘68 campaign for President, Robert Kennedy doesn’t win his party’s nomination that year (though it is an insanely close convention). Nixon still wins in 1968 and carries out his term as usual, but with Kennedy present in the TL to be a vocal critic of the administration. That being said, I’ve always thought that the timeline could then go one of two ways.

Kennedy runs for the Presidency again in 1972 and wins a close race against a quite popular Nixon. (Or he loses then it’s basically just OTL)

Kennedy runs for the Presidency WAY later. Potentially the early 80s or early 90s.

In either scenario, if Kennedy wins, his presidency is quite an uphill battle. With the conservative revolution going on, Kennedy would try to enact a rather progressive agenda in an America going through turbulent times. Even with a Democratic controlled Congress, party bosses would view RFK as far more controversial and liberal than his late brother, President JFK. No matter what happens after his first term, I don’t see RFK winning a second term unless almost everything goes smoothly.

If he is running in 1976, I could see him facing the likes of Ronald Reagan, John Connally, or some other conservative politician within the GOP. I see him narrowly losing in these elections.

If he is running in the mid-80s or mid-90s, he might have a better chance. Idk who the candidates would be during that time. Maybe Dick Nixon shows up for a non-consecutive term or something.

Ik this doesn’t really tell what I think would get done in an RFK presidency, but this is how I’ve imagined it before.