The squatter, defined by Noah Webster as “one that settles on new land without a title,” had long been a fixture of America’s frontier past. In the antebellum period, white squatters propelled the Jacksonian Democratic Party to dominance and the United States to the shores of the Pacific. In a bold reframing of the era’s political history, John Suval explores how Squatter Democracy transformed the partisan landscape and the map of North America, hastening clashes that ultimately sundered the nation.