And we had liberal Republicans like Jacob Javits and Nelson Rockefeller, also equally extinct.
The Democratic and Republican parties each had liberal and conservative wings back then; that changed, in a process starting with the 1964 election and being virtually complete by the 1972 election.
Something I will always remember is a brief scene caught through the magic of live TV at one of the Republican conventions (I'm guessing it was '64).
Nelson Rockefeller was apparently drunk and fell over a chair.