"Everyone" doesn't vote all-red or all-blue. 30% vote all red, 30% all blue, and 40% stay home because there is never a sensible centrist candidate. Each of t

"Everyone" doesn't vote all-red or all-blue. 30% vote all red, 30% all blue, and 40% stay home because there is never a sensible centrist candidate. Each of the 30% active voters then get mistaken for 50% of citizens.