Quote from Barton Gellman, in The Atlantic, in late September, 2020:
Let us not hedge about one thing. Donald Trump may win or lose, but he will never concede. Not under any circumstance. Not during the Interregnum and not afterward. If compelled in the end to vacate his office, Trump will insist from exile, as long as he draws breath, that the contest was rigged.
Trump’s invincible commitment to this stance will be the most important fact about the coming Interregnum. It will deform the proceedings from beginning to end. We have not experienced anything like it before.