I won't vote for Rudy if he's nominated, I will vote 3rd party for the first time in any of the 13 presidential elections in which I will have voted since I became of age in 1958. If my one vote gives the election to Hillary I won't take the blame, the blame will belong to those Repubs who vote for Rudy in the primaries.
I don't especially care for Rudy, but any republican candidate will be preferable to Hillary.
The stated positions on issues are of marginal value with politicians, especially Hillary.
The religious issues are important and I grant you that Rudy is poor in those areas, but not as bad as Hillary.
The drift in our form of government is very important to the future of the country. Hillary is a socialist, Rudy or any of the Republicans are not.
The competence issue maybe the most important and no one will address it. Hillary and the other democrat candidates have always been jackals sniping from the sidelines. Rudy is the only real proven administrator in the bunch. What good is it to have all the right positions on issues if you can't manage your way out of a paper bag?
Of course then there is the corruption issue and Hillary is definitely number one in that area.