It's good to finally know what the turning point was. I've had an interesting time reading spins of Goldwater's decision from both the right and the left.
It looks like the left did a better job of selling their spin to the public.
There was only one outlet for news in the sixties -- the MSM.
The only "spin" that got a public airing was spin from the left.
In a manner of speaking, what Walter Cronkite wanted, America got.