Voluntary voting effectively gives people with a single-issue obsession more power than everyone else, because they show up to vote. In compulsory voting systems, the outliers are moderated by the median, whose concerns are typically less emotional (abortion, guns) and more economic (price of milk, mortgage rates). Political parties are a concentrated form of voluntary voting. One of the reasons the USA's primaries s…
Is that true? It certainly has its critics, but in classical Greece it more than held its own in a highly competitive ecosystem for ~180 years. I'm sure at least that we need more experiments with different institutions.