One way to test how much people actually believe something, al-Gharbi wrote, “is to look out for yawning gaps between rhetoric and behaviors.” The fact that roughly 2,500 people participated in the Jan. 6 insurrection suggests that the overwhelming majority of Republicans do not believe the election was stolen no matter what they tell pollsters, in al-Gharbi’s view:

If huge shares of the country, 68 percent of G.O.P. voters, plus fair numbers of Independents and nonvoters, literally believed that we were in a moment of existential crisis, and the election had been stolen, and the future was at stake — why is it that only a couple thousand could muster the enthusiasm to show up and protest at the Capitol? In a world where 74 million voted for Trump, and more than two-thirds of these (i.e. more than 50 million people, roughly 1 out of every 5 adults in the U.S.) actually believed that the other party had illegally seized power and plan to use that power to harm people like themselves, the events of Jan. 6 would likely have played out much, much differently.

Whatever the motivation, Isabel V. Sawhill, a Brookings senior fellow, warned that Republican leaders and voters could be caught in a vicious cycle:

There may be a dynamic at work here in which an opportunistic strategy to please the Trump base has solidified that base, making it all the more difficult to take a stance in opposition to “whatever-Trump-wants.” It’s a Catch-22. To change the direction of the country requires staying in power but staying in power requires satisfying a public, a large share of whom has lost faith in our institutions, including the mainstream media and the democratic process.