This is one of those things you’re not allowed to say.
Although Jackie was something of a RINO: he worked for Nelson Rockefeller and was a fervent Rocky supporter. Like many Rockefeller Republicans (probably including Lord Nelson himself), he supported the corrupt, amoral LBJ over Goldwater.
Unfortunately Goldwater's anti-Civil Rights stance cost the Republicans the great bulk of Black voters it had enjoyed previous to the '64 election. In 1960 Richard Nixon received fortyfive percent of the Black vote. Goldwater received a much smaller percentage.