I totally called it:
there will be a large number of pro-Trump armed protesters there. I suppose I could imagine them storming the capital, overwhelming the fairly weak police forces in and around D.C., and Trump intentionally not using his resources to stop them, so that they are able to actually disrupt the vote count. This could last for a few days, maybe, before the government apparatus including the military work together to arrest Trump for treason or whatever. Trump would eventually totally fail, but it would be a huge shock to the American psyche.
The D.C. police is notoriously weak, and it was well-known that armed protesters were going to flood the area, so this isn't surprising at all. And Trump is acting like a complete idiot, as usual. His statements (ie.
almost supporting the violence) put him right on the line of having people actually be able to credibly come after him for treason, and there is no endgame whatsoever: it's all just self-destructive, childlike narcissism. A popular, competent, and/or well-connected leader would've had some chance of actually succeeding in a coup, or maybe exploiting the confusion to get sufficient public support to stay in power. But Trump is neither popular, nor competent, nor well-connected, and he's a few more stupid words away from the point where the National Guard of the surrounding states are going to come in and arrest him.
I'm no Trump hater -- the Russiagate stuff was nonsense, and
grading on a curve I'd say that Trump's presidency has been pretty good --, but he's clearly lost his mind, and Republican politicians who continue to go along with him are committing political suicide. Trump formed a strong, loyal coalition among evangelicals, economic conservatives, social conservatives, the working class, and nutcases, but now all but the nutcases have abandoned him. He no longer has a strong, useful base that politicians should covet. Someone needs to make an image macro of that scene from that Batman movie where Bane is "crashing this plane with no survivors", and he sacrifices one of his own minions; replace the minion's face with Ted Cruz, and Bane's with Trump's.
I think USA has just passed the point of no returns.
US politics is on a trajectory that is unsustainable and will eventually collapse, but I think that this is more of a symptom of that than anything that will change that trajectory one way or another. It will have a major impact on politics, but things will be mostly back to normal in a few months. This won't
actually disrupt Biden taking power or anything.
The longer this lasts, the worse things will be for Trump and Republicans. But even if Trump literally throws his support behind an armed coup (which will inevitably fail), it won't be the end of the Republican party forever or anything.