Now comes Al Olszewski, aka “Dr. Al,” to perform his role in the rotation of special guests at Republican dinners, where references to Donald Trump are like table salt — never on the menu, but always included. Unless, that is, there’s another candidate in the race boasting of Trump’s endorsement, as there is in Olszewski’s four-way GOP primary for Montana’s open Western District U.S. House seat. In that case, the challenge becomes this: how to persuade Republican voters of your MAGA-grade fealty to the party’s national standard-bearer without actually saying so.