In the US, we’re so accustomed to our “one man, one vote” election system that we’ve by and large forgotten that alternatives exist that can produce materially fairer outcomes.
C. G. P. Grey discusses the main problems with First Past The Post in this excellent video, which explains briefly why such systems — even if they start with multiple parties — inevitably devolve into a two-party duopoly that poorly represents most citizens. Go watch. It’s worth 6 minutes of your time, I assure you.
If you enjoyed it, continue for more over at his blog, where concepts like Alternative Vote (also known as “Instant Runoff Voting“) and Gerrymandering are explored in similar style.
Via MeFi.