This book examines whether mechanisms of accountability characteristic of democratic systems are sufficient to induce the representatives to act in the best interest of the represented. The first part of the volume focuses on the role of elections, distinguishing different ways in which they may cause representation. The second part is devoted to the role of checks and balances, between the government and the parliament as well as between the government and the bureaucracy. Overall, the essays combine theoretical discussions, game-theoretic models, case studies, and statistical analyses, within a shared analytical approach and a standardized terminology. The empirical material is drawn from the well established democracies as well as from new democracies.