The background music of my life is the steady drumbeat of tweets about how Hillary Clinton stole the presidential primary from Bernie Sanders.

It’s there when I wake up in the morning. It’s there when I go to sleep at night. The constant thrumming of election fraud conspiracists is like the noise made by that board game in the movie “Jumanji.”

I didn’t write about this during the primary season, since I didn’t want to dignify the views of conspiracy theorists. But they’re still going.

The allegations are remarkably consistent. They go like this: Mr. Sanders did better in the early exit polls than he did in the final result. Therefore, Mrs. Clinton probably stole the election. The exit polls are a sufficient basis to make this determination, in the eyes of the conspiracists, because exit polls are used internationally to detect fraud. They’re supposedly very accurate and “well controlled” (where this phrase comes from, I don’t know). Furthermore, they say, the exit polls were right on the G.O.P. side — confirming the underlying validity of the methodology and raising suspicions about the Democratic vote count.