Book excerpt: Defining Democracy reveals the history of a little-known experiment in urban democracy begun in New York City during the Great Depression and abolished amid the early Cold War. For a decade, New Yorkers utilized a new voting system that produced the most diverse legislatures in the city's history and challenged the American two-party structure. Daniel O. Prosterman examines struggles over electoral reform in New York City to clarify our understanding of democracy's evolution in the United States and the world.