This book fills a substantial hole in the redistricting literature. First, Winburn analyzes state legislative redistricting, an understudied arena. Second, not only do we find a detailed account of redistricting-across a variety of states with different rules, political contexts, and partisan objectives-but we are exposed to perhaps the most political process from beginning to end, starting with intentions and concluding with electoral consequences. It is an often stated refrain that rules matter and this work demonstrates convincingly that state-imposed constraints generally limit the excesses of those who would manipulate maps for partisan gain.