Michael Coppedge is Professor of Political Science at the University of Notre Dame, Indiana, and co-Principal Investigator of Varieties of Democracy (V-Dem). He is the author of Democratization and Research Methods (Cambridge, 2012). John Gerring is Professor of Government at the University of Texas, Austin, and co-Principal Investigator of Varieties of Democracy (V-Dem). His work extends across comparative politics, political history, and methodology. Adam Glynn is Associate Professor of Political Science and Quantitative Theory and Methods at Emory University, Atlanta, and Project Manager for Methodology of Varieties of Democracy (V-Dem). His research examines causal inference and sampling/survey designs for political science applications. Carl Henrik Knutsen is Professor of Political Science at Universitetet i Oslo, and co-Principal Investigator of Varieties of Democracy (V-Dem). His research examines the economic effects of political institutions and regimes, policy-making in autocracies, and processes of regime change. Staffan I. Lindberg is Director of the V-Dem Institute and Professor of Political Science at Göteborgs Universitet, Sweden, and co-Principal Investigator of Varieties of Democracy (V-Dem). His research examines topics ranging from elections, democratization, and civil society, to women's representation and voting behavior. Daniel Pemstein is Associate Professor of Political Science at North Dakota State University, and Project Manager for Measurement Methods of the Varieties of Democracy (V-Dem). He specializes in measurement and builds statistical tools to study political institutions, parties, and careers. Brigitte Seim is Assistant Professor of Public Policy at the University of North Carolina, Chapel Hill, and Project Manager for Experiments of Varieties of Democracy (V-Dem). Her research examines the relationship between citizens and political officials. Svend-Erik Skaaning is Professor of Political Science at Aarhus Universitet, Denmark, and Project Manager for Varieties of Democracy (V-Dem). His research examines the conceptualization, measurement, and explanation of democracy and other governance related phenomena. Jan Teorell is Professor of Political Science at Lunds Universitet, Sweden and Principal Investigator for Varieties of Democracy (V-Dem). His research interests include political methodology, comparative politics and democratization, corruption, and state-making.

'V-Dem data, the fruit of a large international collaborative effort, is a big advance in the measurement of democracy, and has set a new baseline for discussions in this field. This book offers a careful, detailed, explanation about how this data was produced and validated. It is an indispensable source for users of V-Dem data. It also offers lessons for a broader discussion about measurement in the social sciences.' Gerardo Munck, University of Southern California

• 1. Introduction: the story of Varieties of Democracy Michael Coppedge, Staffan I. Lindberg and Carl Henrik Knutsen; 2. Conceptual scheme John Gerring, Svend-Erik Skaaning, David Altman, Michael Bernhard, Michael Coppedge, Carl-Henrik Knutsen, Staffan I. Lindberg, Kelly McMann and Jan Teorell; 3. Data collection Staffan I. Lindberg, Valeriya Mechkova, Natalia Stepanova, Jan Teorell, Michael Coppedge and Carl Henrik Knutsen; 4. The measurement model and reliability Daniel Pemstein, Kyle Marquardt, Brigitte Seim, Eitan Tzelgov, Yi-ting Wang and Farhad Miri; 5. Dimensions and components of democracy Jan Teorell; 6. Data validation Brigitte Seim, Michael Bernhard, Fernando Bizzarro Neto, Michael Coppedge, John Gerring, Staffan I. Lindberg, Matthew Maguire, Daniel Pemstein, Jan Teorell and Eitan Tzelgov; 7. Explanatory analysis with Varieties of Democracy data Michael Coppedge, Adam Glynn, Carl Henrik Knutsen and Daniel Pemstein.

Michael Coppedge is Professor of Political Science at the University of Notre Dame, Indiana, and co-Principal Investigator of Varieties of Democracy (V-Dem). He is the author of Democratization and Research Methods (Cambridge, 2012). John Gerring is Professor of Government at the University of Texas, Austin, and co-Principal Investigator of Varieties of Democracy (V-Dem). His work extends across comparative politics, political history, and methodology. Adam Glynn is Associate Professor of Political Science and Quantitative Theory and Methods at Emory University, Atlanta, and Project Manager for Methodology of Varieties of Democracy (V-Dem). His research examines causal inference and sampling/survey designs for political science applications. Carl Henrik Knutsen is Professor of Political Science at Universitetet i Oslo, and co-Principal Investigator of Varieties of Democracy (V-Dem). His research examines the economic effects of political institutions and regimes, policy-making in autocracies, and processes of regime change. Staffan I. Lindberg is Director of the V-Dem Institute and Professor of Political Science at Göteborgs Universitet, Sweden, and co-Principal Investigator of Varieties of Democracy (V-Dem). His research examines topics ranging from elections, democratization, and civil society, to women's representation and voting behavior. Daniel Pemstein is Associate Professor of Political Science at North Dakota State University, and Project Manager for Measurement Methods of the Varieties of Democracy (V-Dem). He specializes in measurement and builds statistical tools to study political institutions, parties, and careers. Brigitte Seim is Assistant Professor of Public Policy at the University of North Carolina, Chapel Hill, and Project Manager for Experiments of Varieties of Democracy (V-Dem). Her research examines the relationship between citizens and political officials. Svend-Erik Skaaning is Professor of Political Science at Aarhus Universitet, Denmark, and Project Manager for Varieties of Democracy (V-Dem). His research examines the conceptualization, measurement, and explanation of democracy and other governance related phenomena. Jan Teorell is Professor of Political Science at Lunds Universitet, Sweden and Principal Investigator for Varieties of Democracy (V-Dem). His research interests include political methodology, comparative politics and democratization, corruption, and state-making.

'V-Dem data, the fruit of a large international collaborative effort, is a big advance in the measurement of democracy, and has set a new baseline for discussions in this field. This book offers a careful, detailed, explanation about how this data was produced and validated. It is an indispensable source for users of V-Dem data. It also offers lessons for a broader discussion about measurement in the social sciences.' Gerardo Munck, University of Southern California

• 1. Introduction: the story of Varieties of Democracy Michael Coppedge, Staffan I. Lindberg and Carl Henrik Knutsen; 2. Conceptual scheme John Gerring, Svend-Erik Skaaning, David Altman, Michael Bernhard, Michael Coppedge, Carl-Henrik Knutsen, Staffan I. Lindberg, Kelly McMann and Jan Teorell; 3. Data collection Staffan I. Lindberg, Valeriya Mechkova, Natalia Stepanova, Jan Teorell, Michael Coppedge and Carl Henrik Knutsen; 4. The measurement model and reliability Daniel Pemstein, Kyle Marquardt, Brigitte Seim, Eitan Tzelgov, Yi-ting Wang and Farhad Miri; 5. Dimensions and components of democracy Jan Teorell; 6. Data validation Brigitte Seim, Michael Bernhard, Fernando Bizzarro Neto, Michael Coppedge, John Gerring, Staffan I. Lindberg, Matthew Maguire, Daniel Pemstein, Jan Teorell and Eitan Tzelgov; 7. Explanatory analysis with Varieties of Democracy data Michael Coppedge, Adam Glynn, Carl Henrik Knutsen and Daniel Pemstein.

Michael Coppedge is Professor of Political Science at the University of Notre Dame, Indiana, and co-Principal Investigator of Varieties of Democracy (V-Dem). He is the author of Democratization and Research Methods (Cambridge, 2012). John Gerring is Professor of Government at the University of Texas, Austin, and co-Principal Investigator of Varieties of Democracy (V-Dem). His work extends across comparative politics, political history, and methodology. Adam Glynn is Associate Professor of Political Science and Quantitative Theory and Methods at Emory University, Atlanta, and Project Manager for Methodology of Varieties of Democracy (V-Dem). His research examines causal inference and sampling/survey designs for political science applications. Carl Henrik Knutsen is Professor of Political Science at Universitetet i Oslo, and co-Principal Investigator of Varieties of Democracy (V-Dem). His research examines the economic effects of political institutions and regimes, policy-making in autocracies, and processes of regime change. Staffan I. Lindberg is Director of the V-Dem Institute and Professor of Political Science at Göteborgs Universitet, Sweden, and co-Principal Investigator of Varieties of Democracy (V-Dem). His research examines topics ranging from elections, democratization, and civil society, to women's representation and voting behavior. Daniel Pemstein is Associate Professor of Political Science at North Dakota State University, and Project Manager for Measurement Methods of the Varieties of Democracy (V-Dem). He specializes in measurement and builds statistical tools to study political institutions, parties, and careers. Brigitte Seim is Assistant Professor of Public Policy at the University of North Carolina, Chapel Hill, and Project Manager for Experiments of Varieties of Democracy (V-Dem). Her research examines the relationship between citizens and political officials. Svend-Erik Skaaning is Professor of Political Science at Aarhus Universitet, Denmark, and Project Manager for Varieties of Democracy (V-Dem). His research examines the conceptualization, measurement, and explanation of democracy and other governance related phenomena. Jan Teorell is Professor of Political Science at Lunds Universitet, Sweden and Principal Investigator for Varieties of Democracy (V-Dem). His research interests include political methodology, comparative politics and democratization, corruption, and state-making.

'V-Dem data, the fruit of a large international collaborative effort, is a big advance in the measurement of democracy, and has set a new baseline for discussions in this field. This book offers a careful, detailed, explanation about how this data was produced and validated. It is an indispensable source for users of V-Dem data. It also offers lessons for a broader discussion about measurement in the social sciences.' Gerardo Munck, University of Southern California

• 1. Introduction: the story of Varieties of Democracy Michael Coppedge, Staffan I. Lindberg and Carl Henrik Knutsen; 2. Conceptual scheme John Gerring, Svend-Erik Skaaning, David Altman, Michael Bernhard, Michael Coppedge, Carl-Henrik Knutsen, Staffan I. Lindberg, Kelly McMann and Jan Teorell; 3. Data collection Staffan I. Lindberg, Valeriya Mechkova, Natalia Stepanova, Jan Teorell, Michael Coppedge and Carl Henrik Knutsen; 4. The measurement model and reliability Daniel Pemstein, Kyle Marquardt, Brigitte Seim, Eitan Tzelgov, Yi-ting Wang and Farhad Miri; 5. Dimensions and components of democracy Jan Teorell; 6. Data validation Brigitte Seim, Michael Bernhard, Fernando Bizzarro Neto, Michael Coppedge, John Gerring, Staffan I. Lindberg, Matthew Maguire, Daniel Pemstein, Jan Teorell and Eitan Tzelgov; 7. Explanatory analysis with Varieties of Democracy data Michael Coppedge, Adam Glynn, Carl Henrik Knutsen and Daniel Pemstein.