0.000001%. Otherwise its about the same odds of being abducted by aliens or an asteroid crashing into earth. Possibility exists but pretty close to zero.
Now how about odds that Trump won't voluntarily leave the White House and will have to be forcibly removed, that would be interesting. I think that is a very real possibility.
Basically what needs to happen is that Republicans assassinate at least 11 Democratic elected members of the House, and somehow this triggers a reaction where Senate Republicans fall in lockstep with Trump and pledge to reject Biden electors, instead of an opposite anti-Trump reaction. So yeah, 0.000001% sounds about right.
