We've not in the twilight of American democracy - America has never been a democracy.  No, what we're in the twilight of is American conservatism, at least in the form in which it has existed for the past 4-5 decades.  We're in the initial death-throes now, which I believe will be the most violent convulsions for conservatives, because they are still a lot of them, but they can sense their time as a power movement is ending.  The ultra-wealthy, supply-side economic folks at the top of the GOP can no longer hold together the arranged marriage of their kind and the poor/middle-class socially-conservative Americans they've bent over economically for decades, but strung along with issues like religion, abortion and immigration.  Those folks are finally lashing out as Trump supporters.  Problem with most rank-and-file conservatives, they still stumble around like Frankenstein - "AARRGH!! Government bad!!!"  Most of them have no clue what governance is or how it should function.