This book is the first to focus solely upon congressional primary elections, and to do so for a student readership. Boatright organizes his text around the contention that there are important differences between types of primaries, and these differences prevent us from making blanket statements about primary competition. He focuses on explanations of two sources of difference: differences in electoral structure and differences brought about by the presence or absence of an incumbent seeking reelection. The first three chapters introduce these differences, explore how they came to exist, and outline some of the strategic considerations for candidates, parties, interest groups, and voters in primary elections. The subsequent four chapters explore different types of primary elections, and the final chapter evaluates actual and proposed primary reforms. Congressional Primary Elections is the first book to provide a history and analysis of congressional primary elections and will serve as a crucial part of courses on political parties and campaigns and elections. The book gives students the tools for understanding arguments for and against the reform of primary elections and for understanding the differences between types of primaries.