You’d think a hegemony with a 100-years tradition of upkeeping democracy against major non-democratic players, would have some mechanism that would prevent itself from throwing down it’s key ideology.
Is it really that the president is all that decides about the future of democracy itself? Is 53 out of 100 senate seats really enough to make country fall into authoritarian regime? Is the army really not constitutionally obliged to step in and save the day?
I’d never think that, of all places, American democracy would be the most volatile.
This only proves that two-party system is just an authoritarianism with rotation. There’s always a ruling majority and the winner takes all.
Things would be different with at least the third party. 2 out of 3 parties would agree that the party no.3 is a fucking malice and rule him out.
Third party would most likely make things better but there’s no guarantee it would help in the situation you’ve set up. If two of the parties are fine with an actual Nazi in the White House and between them they control over half the votes then we’re still in the same situation.