American Government / Unit 6 Gov 262 short lesson, about 20 seconds
Winner-Take-All and Duverger's Law
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The idea
Single-member districts under plurality rule push toward two parties, because second place earns nothing — a regularity called Duverger's Law.
In practice
A party that reliably finishes third collects zero seats, and its supporters eventually migrate.
Where people slip
The two-party system is downstream of Gov 213's counting rule — change the rule, change the party math.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
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