File for future reference. Richard Nixon was not invited by Goldwater to speak at the 64 Convention in(are you ready??) San Francisco. But he did make it to the convention 4 years later and gave the convention’s final speech.
It looks like Sarah was invited. Did you read the article?
I think this quote from the Wiki on Barry Goldwater is telling:
Goldwater disliked Johnson (who he said "used every dirty trick in the bag"), and Richard M. Nixon of California (whom he later called "the most dishonest individual I have ever met in my life")
The record that's now playing seems to be stuck in a groove and keeps skipping and replaying the same thing over and over again.