But maybe not. I happened to do a
It seems that almost all Republican big shots supported Goldwater, at least on paper. Nixon, unlike Romney, campaigned for Goldwater. Eisenhower, unlike the Bushes, supported Goldwater. John Lindsay was the big name Republican to go for LBJ. Who was he? The Representative of the "Silk Stocking" district in NYC, identified as an up and comer, but also very liberal. The current day parallel might be Sen. Rubio, though a senator is a bigger name than a mere representative, even one for whom the NYTimes is the hometown paper.
So it seems to me, very tentatively, that the GOP is more divided at the top these days than it was in 1964. And, perhaps, the GOP was more divided, or rather less partisan, at the grassroots than it is today. If that's true, maybe it's the result of a more national media,