He has his cult convinced the election is illegitimate.

http://www.vox.com/2020-presid...allenge-recount-biden

Donald Trump is trying to discredit an election he is losing
Joe Biden has won the presidency. But the current president of the United States, Donald Trump, is attempting a coup in plain sight. "I WON THIS ELECTION, BY A LOT!" he tweeted on Saturday morning. This came after he demanded that states cease counting votes when the total began to turn against him, after his press secretary shocked Fox News anchors by arguing that legally cast votes should be thrown out.

The Trump administration's current strategy is to go to court to try and get votes for Biden ruled illegitimate, and that strategy explicitly rests on Trump's appointees honoring a debt the administration, at least, believes they owe. One of his legal advisers said, "We're waiting for the United States Supreme Court - of which the President has nominated three justices - to step in and do something. And hopefully Amy Coney Barrett will come through."

If that fails, and it will, Mark Levin, one of the nation's most popular conservative radio hosts, is explicitly calling on Republican legislatures to reject the election results and seat Donald Trump as president anyway. After Twitter tagged the tweet as contested, Trump's press secretary weighed in furiously on Levin's behalf.

That this coup probably will not work - that it is being carried out farcically, erratically, ineffectively - does not mean it is not happening, or that it will not have consequences. Millions will believe Trump, will see the election as stolen. The Trump family's Twitter feeds, and those of associated outlets and allies, are filled with allegations of fraud and lies about the process (reporter Isaac Saul has been doing yeoman's work tracking these arguments, and his thread is worth reading). It's the construction of a confusing, but immersive, alternative reality in which the election has been stolen from Trump and weak-kneed Republicans are letting the thieves escape.