Last year, as it became clear that Donald Trump would win the Republican nomination, analysts on both the right and the left speculated that millions of regular Republicans would be repulsed by his ethnonationalism and misogyny.

Writing in the Washington Post in August of 2016, Whit Ayres, a Republican pollster, warned:

Republicans running for election this year have watched the wheels coming off the Trump Train with increasing alarm. How can Republican candidates in down-ballot races survive such a calamitous nominee at the top of their ticket?

Come Election Day, however, Republican voters did not abandon their party. The Republican share of the electorate grew slightly, from 32 percent in 2008 and 2012 to 33 percent in 2016, and Trump carried these voters 11 to 1.

This pattern has continued into the present and shows no signs of letting up. In recent days, prominent Republicans, including George W. Bush, Bob Corker, John McCain and Jeff Flake, have warned in various ways that Trump is leading their party and the country in a very dangerous direction. For the moment, however, it is the president’s critics who are butting their heads against a brick wall. The reality is that neither Flake nor Corker is seeking re-election, and both would have struggled to win renomination if they presented themselves as adversaries of President Trump.

In short, the Trump-Steve Bannon-Laura Ingraham wing of the Republican party is ascendant. As Mike Allen headlined his post on Axios Wednesday: “Virtually every Republican now a Trump Republican.” Allen went on:

Trump enjoys public support (despite private gripes) from most of the 49 other Senate Republicans and 239 House Republicans, including every person in elected leadership.

Why is this still true, despite their “private gripes”? Because of the “strong, sustained support of G.O.P. voters” that the president enjoys.