There were several very prominent disasters, but overall the electoral system has served the goal of democracy remarkably well.
However, argues the author, a couple of centuries have passed, and electronic media (among other things) have changed virtually every way we interact with the society.
It's perhaps not heresy to ask if the electoral system in its current form (casting physical ballots a few times per decade) is still the best way to serve the purpose of democratic representation.
One idea that is gaining traction in recent years, is called sortition. There are infinite variants of it, some dating back to the Athenian democracy — but the incarnation most commonly proposed today is based on allotting groups of citizens to advise or deliberate on very specific topics. The groups could be selected with some combination of chance, competence, volunteered time, and other factors. The specific deliberations might be open for comments or votes, with the idea that active participation is more effective than passive acquiescence, in producing effective consensus.
Some independent, non-political groups operate in similar ways today — and some are undeniably effective at it. The open source community provides some examples. It remains to be seen if some of the same principles would translate well to produce laws or running general institutions, where it's arguably more difficult to fork your state if you think it's mismanaged.