Apex of Rockefeller's career (if you watched Mad Men, it captured pretty well the buzz around him as a national candidate then). End came when Ford replaced him in 1976 w/...Bob Dole. Race ended Morgenthau as a statewide candidate, but he had a heckuva second act. https://twitter.com/BenJ_Rosenblatt/status/1153320305735213057 …
Well, that & his divorce set him on the downward path, but he was still enough of a factor to get the vice presidency.