This is a national, not just a Democratic, emergency. Trump has strengthened his identification with the seditious forces he unleashed on Jan. 6. He has embraced ever more absurd and malicious conspiracy theories. He has shown even less stability, humanity, responsibility and restraint. And his support among Republicans has grown. Trump and his strongest supporters are in a feedback loop of radicalization.

If Trump returns to the presidency, many of the past constraints on his power would be purposely loosed. Many of the professionals and patriots who opposed him in his final days would have been weeded out long before. There is no reason Trump would not try to solidify personal power over military and federal law enforcement units to employ as a bully’s club in times of civil disorder. There is no reason he would refrain from using federal resources to harass political opponents, undermine freedom of the press and change the outcome of elections. These are previously stated goals.

What attitudes and actions does this require of us? Any reaction must begin with a sober recognition. Catastrophe is in the front room. The weather forecast includes the apocalypse.