In the United States, today’s Republican Party is what political scientists call “personalist.” Power is concentrated with one individual, and other party elites don’t have much ability—or willingness—to oppose that leader. In other countries around the world, when personalist parties have won control of national government, the result has been democratic backsliding and growing authoritarianism. Understanding why this is a problem for the future of democracy can also help us understand what to do about it. Erica Frantz studies authoritarian politics, with a focus on democratization, democratic backsliding, conflict, and development. She is an associate professor of political science at Michigan State University and a research fellow at the Charles F. Kettering Foundation.