

“Something I hope we can do no matter who you voted for is see each other not as adversaries but as fellow Americans, Bring down the temperature.”
No. Human rights aren’t a disagreement. We can disagree on whether or not we enjoyed a movie or on what pizza toppings we prefer. But if the disagreement is that you want to kill me or people I care about, you are, by definition, my adversary.
Legally, not without a constitutional amendment. But if he just declares he’s running anyway, the Constitution is as likely to stop him as any other piece of paper.