“The state of our politics also explains why none of the revelations, outrages or gaffes seemed to dent Mr. Trump’s popularity”

When I wrote in August 2015 that Mr. Trump was a cartoon version of every left-wing media stereotype of the reactionary, nativist, misogynist right, I thought that I was well within the mainstream of conservative thought — only to find conservative Trump critics denounced for apostasy by a right that decided that it was comfortable with embracing Trumpism. But in Wisconsin, conservative voters seemed to reject what Mr. Trump was selling, at least until after the convention.

To be sure, some of my callers embraced Mr. Trump’s suggestion for a ban on Muslims entering the country and voiced support for a proposal to deport all Muslims — even citizens. One caller compared American Muslims to rabid dogs. But right to the end, relatively few of my listeners bought into the crude nativism Mr. Trump was selling at his rallies.

What they did buy into was the argument that this was a “binary choice.” No matter how bad Mr. Trump was, my listeners argued, he could not possibly be as bad as Mrs. Clinton. You simply cannot overstate this as a factor in the final outcome. As our politics have become more polarized, the essential loyalties shift from ideas, to parties, to tribes, to individuals. Nothing else ultimately matters.

In this binary tribal world, where everything is at stake, everything is in play, there is no room for quibbles about character, or truth, or principles. If everything — the Supreme Court, the fate of Western civilization, the survival of the planet — depends on tribal victory, then neither individuals nor ideas can be determinative. I watched this play out in real time, as conservatives who fully understood the threat that Mr. Trump posed succumbed to the argument about the Supreme Court. As even Mr. Ryan discovered, neutrality was not acceptable; if you were not for Mr. Trump, then you were for Mrs. Clinton.

The state of our politics also explains why none of the revelations, outrages or gaffes seemed to dent Mr. Trump’s popularity.

In this political universe, voters accept that they must tolerate bizarre behavior, dishonesty, crudity and cruelty, because the other side is always worse; the stakes are such that no qualms can get in the way of the greater cause.

Charles J. Sykes, “Where the Right Went Wrong”, The New York Times (18 December 2016), SR3.