Donald Trump’s refusal to accept his electoral defeat is alarming, but unsurprising. It is Mr. Trump’s character to reject even reality itself when it conflicts with his ego. More alarming is the long list of state and national Republican leaders cravenly falling in line behind his desperate efforts to topple American democracy.

On Friday, the Supreme Court rejected a Texas lawsuit to overturn the election, a legal challenge that was as frivolous as it was anti-constitutional. Yet more than 60 percent of House Republicans signed a supporting brief, joining 18 Republican attorneys general who filed their own and embraced entirely the unreality of Trumpism by lending their names to undoing an election that put them in office.

These were not just fringe elements. The minority leader Kevin McCarthy and the whip Steve Scalise signed their names, as did the incoming ranking member for the powerful House Energy and Commerce Committee, Cathy McMorris Rodgers. Some, such as Kevin Brady, Bill Flores and Ann Wagner, were Republicans who the NeverTrump movement once hoped would break with the president once we made him an electoral loser.

That they instead clung to his mad king strategy, like sailors lashed to the mast of a sinking ship, proves that the majority of the party has, at least for the foreseeable future, forsaken democracy. Even though Mr. Trump has been defeated, there is still no home for Republicans committed to representative government, truth and the rule of law, nor is one likely to emerge anytime soon.