Whoever is the Republican nominee, you must vote for him. So if it is Trump, then it's Trump for whom you must vote. I stand by that. But that is not to say that Trump ought to be the nominee. David Brooks details some of the scams the egomaniacal vulgarian has perpetrated. I wonder if this article will put a dent in the mindless support the blowhard enjoys among otherwise intelligent people.
See also Stephen Hayes, Trump: Why I Can't Support Him