Yes, if people who say they’re conservative don’t vote for Rudy in the primaries - then it won’t be Hillary! vs Rudy!
I’m VERY conservative, and I go by the ULTRA conservative William F. Buckely’s rule: “I vote for the most rightward candidate who has a reasonable chance to win.” So that means, for me, Rudy, unless Fred improves remarkably in head-to-head polls with Hillary. I’m simply not going to help nominate another Dole, or, for that matter, another Goldwater. You have to have a shot at winning.