This has changed the composition of the party. While many decent people remain - and represent the hope for future reform - Trump's Republican Party has become a magnet for eccentrics and conspiracy theorists of all stripes.

Indeed, Trump in his diabolical shrewdness knows how to build and maintain his own base. He's shed the Republican Party's traditional commitment to life. He'll sprint away from any policy or principle that he believes might cost him power. At the same time, he watches his crowd roar when he demonizes immigrants (MAGA's true north star) and he sees "red-pilled" young men rally to his side when he punches hard and never backs down.

Leaders don't simply enact policies; they dictate the cultures of the institutions they lead. We've all experienced this phenomenon in our workplaces, churches and schools. I've compared the cultural power of a leader to setting the course of a river. Defying or contradicting the leader's ethos is like swimming against the current - yes, you can do that for a time, but eventually you get exhausted and either have to swim to the bank and leave, or you're swept downstream, just like everyone else.

Trump has set the course of the Republican Party's cultural river for more than nine years. Fewer and fewer resisters remain, and they're growing increasingly exhausted and besieged.