From a Washington Post analysis by Aaron Blake headlined “How big is Trump’s true-believer base?”:

As Donald Trump seeks to mobilize his base against a potential indictment, a big question is: Just how big is Trump’s true-believer base? How many people are willing to stand by Trump no matter what?

This matters both when it comes to any backlash against an indictment — around which Trump has increasingly alluded to the prospect of violence — and for Trump’s 2024 presidential prospects.

The answer: Die-hard support remains substantial. But the number has clearly shrunk. And it’s apparently not a majority of the Republican Party.