If LBJ had gotten the nomination in 1960 and won against Nixon, how would he fare against Goldwater in the 1964 election?
AFAIK, Kennedy's assassination boosted LBJ's numbers in 1964 with his "Protect JFK's Legacy" fervor, and their successful portrayal of Goldwater as a right-wing extremist.
Now without JFK, what would happen? Would he win with the same margins IOTL, or woule he win less states?
This question takes into account the 1964-65 tax cuts (Keynesian, not supply-side AFAIK), and the passing of the Civil Rights Act of 1964, and Hubert Humphrey as LBJ's running mate in 1960.
I also think Cuba's fate would be changed with a LBJ '60 POD.