If Rudy were the “Republican” candidate, I would HAVE TO VOTE FOR HIM. Why? Because I refuse to put a criminal, power-mad Marxist in the Oval Office. That is the only reason he would get my vote.
I concur with your reason and would only add:
Not voting or staying home only helps Hillary (assuming she is the Dem candidate).
The problem is, with Rudy you have a power-mad authoritarian as an alternative choice - and an authoritarians who shares views with the opposition on abortion, gun control, the gay agenda, hate crimes and global warming.
The GOP needs to offer voters a choice. Not someone just slightly better than the other candidate.