Book excerpt: The issue of political participation has been central to American politics since the founding of the United States. The Politics of Democratic Inclusion addresses the ways traditionally underrepresented groups have and have not achieved political incorporation, representation, and influence—or "democratic inclusion"—in American politics. Each chapter provides a "state of the discipline" essay that addresses the politics of diversity from a range of perspectives and in a variety of institutional arenas. Taken together, the essays in The Politics of Democratic Inclusion evaluate and advance our understanding of the ways in which the structure, processes, rules, and context of the American political order encourage, mediate, and hamper the representation and incorporation of traditionally disadvantaged groups.