One of the key shifts in contemporary politics is the trend towards greater personalization. Collective actors such as political parties are losing relevance. Citizens are slowly dealigning from these actors, and individual politicians are therefore growing in importance in elections, in government, within parties, and in media reporting of politics. A crucial question concerns how this new pattern could be restructuring politics over the long run - notably, whetherthe personalization of politics is changing the institutional architecture of contemporary democracies. The authors show that the trend towards personalization is indeed changing core democratic institutions. Studying the evolution of electoral systems in thirty-one European democracies since 1945, they demonstrate that, since the 1990s, there has been a shift towards more personalized electoral systems. Electoral systems in most European countries now allow voters to express preferences for candidates, not just for political parties. And the weight of these voters' preferences in the allocationof seats has been increased in numerous countries. They examine the factors that appear to be driving this evolution, finding that the personalization of electoral systems is associated with the growing gap between citizens and politics. Politicians and legislators appear to perceive the personalization of electoral systems as a way to address the democratic malaise and to restore trust in politics by reducing the role of political parties in elections. The book also shows, however, that whether these reforms have had any success in achievingtheir aims is far less clear. Comparative Politics is a series for students, teachers, and researchers of political science that deals with contemporary government and politics. Global in scope, books in the series are characterised by a stress on comparative analysis and strong methodological rigour. The series is published in association with the European Consortium for Political Research. For more information visit: www.ecprnet.eu. The Comparative Politics series is edited by Emilie van Haute, Professor of Political Science, Universit libre de Bruxelles; Ferdinand Mller-Rommel, Director of the Center for the Study of Democracy, Leuphana University; and Susan Scarrow, Chair of the Department of Political Science, University of Houston.