Speaking only for myself, I really don't care if a politician commits adultery, because it's a personal matter. The notion that "if his wife can't trust him, how can we" is plain bunk - back when I managed rental properties, my business partner had a new girl behind his wife's back every week, but I never doubted that he'd honor his contracts and pay every dime he owed me or anyone else.
Now, if a politician uses public funds to conduct his extramarital affair or keep it hidden, different story, but then it's the embezzlement, not the adultery, that's the political problem.
Having said that, the reason adultery scandals will stick to Cruz but not to Trump is simple: Trump never made a pretense of being a morally pure, saintly man of God in the way that Elmer Gant...Ted Cruz has. If you go around preaching the way to lead the good life, you'd better be a genuine saint yourself, or else the moral foibles that people normally forgive in others will damn you as a ridiculous hypocrite and conman.
Understood. Now where is your evidence Cruz did any of that?