This is an idea I mentioned in the timeline description game, but I am curious to see where it might lead. There was a possibility, however slim, between 1965 and 1968 than someone else would have been in an unbeatable position for the Republican nomination, and that Nixon might have been dissuaded from contesting it. So let's say that's the case. Someone else is so good a position for the Republican nomination that Nixon is dissuaded from seeking it. Instead, he decides to run for Senate. He can either run in New York or California if he is able to change his residency in time. I realize that's a major plausibility question. But if Nixon makes his decision in 1967, it might be possible. Now historically Senator Kuchel was defeated in the primary, so Nixon defeating him might be possible if he can win the conservative vote that ousted Kuchel historically. Let's say he wins the primary. Can Richard Nixon defeat Alan Cranston in the general election?
Conversely, if Nixon decides to stay in New York, or if that's the only political option available to him, how might he express his urge to reenter politics if the Presidential nomination seems totally closed off?