Alternate 1968 scenarios

Politics & Elections
1

How do you foresee history proceeding if any of the following scenarios pan out:

  1. LBJ stays in the race and wins against Nixon

  2. Humphrey wins against Nixon

  3. Rockefeller wins the nomination and election

  4. Reagan wins the nomination and election

2

I read this book at the time. Wonder if I still have my copy anywhere, probably not.