A right-wing ideologue may end up replacing a sociopath.

Will this time be different? Has Trump finally crossed a line that’s the beginning of the unraveling of his presidency?

Last week he threatened nuclear war with North Korea. This week he doubled down on defending white supremacists even as his allies, corporate executives and military and intelligence chiefs, backed away.

Trump keeps spinning out. After a few cities removed monuments of Confederate Civil War heroes, he tweeted Thursday, “The beauty that is being taken out of our cities, towns and parks will be greatly missed and never able to be comparably replaced!”

The idea of replacing Trump is now edging back into the public’s mind. The Washington Post’s famed 1970s Watergate scandal reporter, Carl Bernstein, is urging the press to dig into sentiment for replacing Trump inside the GOP.

Petitions are circulating. A national PRRI poll released Thursday found 40 percent favor impeaching Trump. That’s 72 percent of Democrats, compared to 58 percent six months ago, and 38 percent of independents, compared to 27 percent in February. Only 7 percent of Republicans, however, want to see him ousted, a figure holding firm from February.

With Congress firmly in GOP hands, the question becomes when would the House, which initiates the impeachment process, realize that it’s in the GOP’s benefit to do so. Of course, Trump could step down, as unlikely as that sounds. All of this is uncharted territory. But the latest Trump chaos is on par with last fall’s grabbing-pussy boasts that at the time prompted some Republicans to consider their options for replacing candidate Trump.

All of these machinations lead to taking a closer look at Vice President Mike Pence, who would become history’s latest accidental president—even if he, too, is under the cloud of special counsel Robert Mueller’s investigation of Russian collusion in the campaign. (In January, Pence told CBS News the campaign had no contacts with Russia, a claim that has been disproven.)