This book explores the similarities and differences among national election systems around the globe and sheds light on how election systems are susceptible to gerrymandering, which is the process by which an incumbent or a political party attempts to manipulate the boundaries of electoral districts for their own advantage. Presenting research showing that some of the worst electoral-system manipulation occurs in the oldest established democracies, the book explores how nations have modified the form of government to meet local conditions and how democracy is threatened by gerrymandering.