This has been done to death-
here's the latest comprehensive thread.
In summary...
Domestic
- JFK v. Goldwater '64: JFK landslide slightly smaller than LBJ IOTL.
- New Frontier programs pass after Democratic supermajorities (2-1 in the House and Senate IOTL) are returned to the House and Senate.
- No Great Society.
- Less of an emphasis on the poor compared to LBJ.
- Cabinet shuffle: McNamara goes to State, Rusk to the UN, RFK to Defense, and Katzenbach to Justice.
- Space: "I don't give a damn about space." Space was a prestige project- the moonshot and he didn't give a damn what happened later.
Foreign
- Detente with the Soviet Union.
- Attempt at an early SALT I
- Too early for PRC recognition.
- Continuation of OTL Vietnamization strategy.
- Quiet termination of the Alliance for Progress (starting in 1963 IOTL)
Electoral
Nixon v. HHH or Nixon v. RFK '68. Nixon beats Humphrey, 50-50 in a Nixon v. RFK matchup.
- Depending who wins, things develop from there.