Indonesia is the world's third largest democracy (after India and the USA) and the only fully democratic Muslim democracy, yet it remains little known in the comparative politics literature. This book aspires to do for Indonesian political studies what The American Voter did for American political science. It contributes a major new case, the world's largest Muslim democracy, to the latest research in cross-national voting behavior, making the unique argument that Indonesian voters, like voters in many developing and developed democracies, are 'critical citizens' or critical democrats. The analysis is based on original opinion surveys conducted after every national-level democratic election in Indonesia from 1999 to the present by the respected Indonesian Survey Institute and Saiful Mujani Research and Consulting.