What is he Thinking?

Make America Great Again

With a neck-and-neck election looming in Georgia that will determine control of government for the next two years, Donald Trump is doing his party no favors.  He has already vetoed the defense bill, threatened to veto COVID relief, and raised the danger of a government shutdown.  (Why Congress can't come back to Washington to override his vetoes has not been made clear).  What is he thinking?  I have heard three main options:

1. He is trying to blackmail Republicans into overturning the election or he will inflict maximum harm on the country.
2. He is deliberately trying to throw the election in Georgia because his wounded ego can't bear the thought that other Republicans can win where he lost.
3. He has no rational goals at all; he his just throwing a mindless tantrum.

I would dearly like to believe that taking such wildly unpopular actions will hurt his prospects for 2024, but, alas, voter memories are short, and this will all probably be forgotten by then.