I get it. You've identified with your party for a long time and don't know how to cut ties. Particularly now, when your party's opponent is the one you've been preparing to defeat for years. You can't stand your party's candidate, but you can't vote for the other one either.
How do you justify holding your nose in order to hold the party line?
The Supreme Court, silly! If the other side gets in, you reason, the Supreme Court will be theirs. And that is the One Thing, the Supreme Thing, that will unify your party against The One Who Shall Not Be Named. So you join hands, think good thoughts, sprinkle pixie dust, and click your ruby red heels together, just as a meteorite falls and vaporizes your trust circle.
This is how I think of it. We all want good teachers in our schools. But if the principal hiring them is Yosemite Sam, we have bigger problems.
Sam is your problem. His priorities have never been for the public good. You like that he's an outsider, but you're trusting him to do a very insider-y deed. And while you're waiting to see if he will actually do it, he's making it harder in general to actually teach. He's deconstructing the context in which these leaders are supposed to do their jobs. He's changing the environment in which these choices are traditionally made. You may get your teachers, but you won't recognize your school.
The supreme issue is how to keep our republic together. Do we have a leader who can keep a secret from our enemies? One who can keep a promise with our allies? Is there anyone running who will not be impeachable immediately upon election? Let's circle around that one. And watch out for meteorites.