That’s a crucial distinction, because in my experience as well as in public polling, there are lots of conservatives who retain a general sense that Biden’s victory wasn’t fair without being committed to John Eastman’s cockamamie plans to force a constitutional crisis. In the same way, there are lots of conservatives who sympathize in a general way with the Jan. 6 protests while believing that they were essentially peaceful and that any rioting was the work of F.B.I. plants or outside agitators — which is deluded, but still quite different from actively wishing for a mob-led coup d’état.

So to the extent that Trump is stuck litigating his own disgraceful conduct before and during the riot, a rival like DeSantis doesn’t need the lukewarm Trump supporter to believe everything the Jan. 6 committee reports. He just needs that supporter to regard Jan. 6 as an embarrassment and Trump’s behavior as feckless — while presenting himself as the candidate who can own the libs but also turn the page.

A counterargument, raised on Friday by New York Magazine’s Jonathan Chait, is that so long as those lukewarm supporters still believe the 2020 election was unfair, Trump will have a trump card over any rival — because if you believe a steal happened, “you are perfectly rational to select a candidate who will acknowledge the crime and do everything to prevent it from reoccurring.”

But it seems just as possible for the lukewarm supporter to decide that if Trump’s response to being robbed was to first just let it happen and then ask his vice president to wave a magic wand on his behalf, then maybe he’s not the right guy to take on the Democratic machine next time.