Every person has a different conscience. Some are purists. Most have some standard of 'lesser of two evils'. Many are complete idiots.
For me, certain things are unforgivable: McCain's continual support of amnesty and denial that it is amnesty - is unforgivable.
I don’t want the military I serve in revert to the liberal’s petrie dish for social engineering and international “meals on wheels” - I would never help a democrat get elected