You're a statist douchebag, to be sure, but that's actually a good point. I've always seen voter apathy as a good sign. In fact, the high voter turnout in the last couple of elections is a strong indicator of just how bad things are.
That's an interesting theory. I recall reading ... a long time ago ... an analysis of the rise the Nazis which said that their strength (which went from 2.5% of the popular vote in 1928 to 37.5% in the spring of 1932), came from 'new voters' -- not just young people reaching the age of majority, but from previously-apathetic non-voters.
(Everyone who cares about liberal democracy and is worried about its future in the US needs to start becoming with certain historical periods that may provide lessons for us -- mainly negative ones, what not to do: the end of the Roman Republic, and the collapse of the Weimar Republic are two such periods.
(Patriots should also study the collapse of the Russian Empire, but for different reasons: start with Trotsky's
History of the Russian Revolution, available for free download from Marxists.org. Pay attention to 'the July Days' ... remarkably similar to 6 Jan.)
For Rome, Mary Beard's
SPQR is a good place to start: in the century or so before the Republic was replaced by the Empire, there was extreme economic inequality, politicians claiming to want to address this problem (Cataline, the Gracchi brothers, even Julius Caesar), money in politics ... and violence in politics, including the killing of all the aforementioned.) She's on the left but is a very good historian.
I don't know of an equivalent book on Weimar. (There are many, but the ones I've seen aren't really comprehensive.) Suggestions welcomed. What is true is that the far Left -- the people after whom AntiFa names itself, the street-fighting units of the Communist Party -- played a big role in helping Hitler get to power. They spent a lot of their energy attacking the Socialists -- whom they called "social-fascists" (our equivalent of 'RINO'). There is a lesson for patriots here.
The real issue is:
should everyone be allowed to determine who will run the government? Right now, partisan considerations will govern how you answer this. If you think that marginal people will vote for your party, you'll favor it, otherwise, not.
So ... imagine we're starting a new society ... say, on Mars, a couple of centuries from now. It will be populated with one million people chosen at random. American Left/Right issues have been long forgotten. How would we want to decide who could vote?
My own prejudice: all those and only those who have successfully completed their military service, with that service open to absolutely everyone. (I stole this idea from Robert Heinlein's excellent
Starship Troopers.)