American Government: Power and Purpose

The text is built around one guiding question: who governs, and to what ends? Rather than surveying institutions as neutral machinery, it treats American politics as an ongoing struggle over the scope and purpose of government authority. The authors organize each chapter around competing theoretical answers—pluralist, elitist, and majoritarian—and ask students to test those answers against evidence. Lowi's own concept of interest-group liberalism runs through the analysis of Congress, bureaucracy, and policy delegation.

Lowi's critique of interest-group liberalism—developed in The End of Liberalism—shapes the book's treatment of Congress and the bureaucracy. The text emphasizes how vague statutes and broad delegation to administrative agencies produce policy made by organized interests rather than by accountable lawmaking. This distinguishes it from textbooks that present pluralism as a benign description of American democracy. Lowi's concern with the rule of law and juridical democracy is a recurring theme, though presented accessibly for undergraduates.

The textbook is co-authored by Theodore J. Lowi, Benjamin Ginsberg, and Kenneth A. Shepsle. Ginsberg is a political scientist known for work on elections, parties, and American political development; Shepsle is a formal theorist known for contributions to legislative studies and positive political theory. Later editions have also included Stephen Ansolabehere. The collaboration combines Lowi's normative critique, Ginsberg's historical and institutional analysis, and Shepsle's rational-choice perspective.

'Analyzing Politics' is a recurring feature that asks students to evaluate competing explanations of political phenomena. It typically presents a puzzle or debate—such as whether parties are weakening or whether the president dominates foreign policy—and lays out rival interpretations alongside the evidence for each. The feature reflects the book's pedagogical commitment to teaching students how to reason about politics rather than simply memorize institutions and procedures. It is one of the text's signature differences from conventional American government textbooks.

Most American government textbooks survey institutions and processes in a neutral, descriptive register. Lowi, Ginsberg, and Shepsle instead organize the material around a contested question—who governs?—and insist that institutional arrangements have consequences for power and purpose. The text is shorter and more analytical than many competitors, and it foregrounds theoretical debate rather than encyclopedic coverage. Lowi's critique of delegation and interest-group liberalism gives the book a normative edge unusual in the textbook market.