This book contains some of the newest, most exciting ideas now percolating among political scientists, from hallway conversations to conference room discussions. To spur future research, enrich classroom teaching, and direct non-specialist attention to cutting-edge ideas, a distinguished group of authors from various parts of this sprawling and pluralistic discipline has each contributed a brief essay about a single novel or insufficiently appreciated idea on some aspect of political science. The one hundred essays are concise, no more than a few pages apiece, and informal. While the contributions are highly diverse, readers can find unexpected connections across the volume, tracing echoes as well as diametrically opposed points of view. This book offers compelling points of departure for everyone who is concerned about political science — whether as a scholar, teacher, student, or interested reader.