R. Daniel Kelemen is Professor of Political Science, Rutgers University.Anand Menon is Professor of European Politics and Foreign Affairs, King’s College London.Jonathan B. Slapin is Associate Professor of Political Science, University of Houston.

• 1. The European Union: Wider and Deeper? 2. Wider and Deeper? Enlargement and Integration in the European Union. 3. Enlargement and Differentiated Integration in the European Union, 4. Ever Closer or ever wider? Public attitudes towards further enlargement and integration in the European Union, 5. Domestic Politics and the "Widening-Deepening" trade-off in the European Union, 6. Who Measures Up? Human Rights in an Enlarging European Union. 7. Depth and Width in Regional Economic Organizations, 8. Why Widening Makes Deepening: Unintended Policy Extension through Polity Expansion, 9. Enlargement and the anticipatory deepening of European integration, 10. Necessary deepening? How political groups in the European Parliament adapt to enlargement

R. Daniel Kelemen is Professor of Political Science, Rutgers University.Anand Menon is Professor of European Politics and Foreign Affairs, King’s College London.Jonathan B. Slapin is Associate Professor of Political Science, University of Houston.

• 1. The European Union: Wider and Deeper? 2. Wider and Deeper? Enlargement and Integration in the European Union. 3. Enlargement and Differentiated Integration in the European Union, 4. Ever Closer or ever wider? Public attitudes towards further enlargement and integration in the European Union, 5. Domestic Politics and the "Widening-Deepening" trade-off in the European Union, 6. Who Measures Up? Human Rights in an Enlarging European Union. 7. Depth and Width in Regional Economic Organizations, 8. Why Widening Makes Deepening: Unintended Policy Extension through Polity Expansion, 9. Enlargement and the anticipatory deepening of European integration, 10. Necessary deepening? How political groups in the European Parliament adapt to enlargement

R. Daniel Kelemen is Professor of Political Science, Rutgers University.Anand Menon is Professor of European Politics and Foreign Affairs, King’s College London.Jonathan B. Slapin is Associate Professor of Political Science, University of Houston.

• 1. The European Union: Wider and Deeper? 2. Wider and Deeper? Enlargement and Integration in the European Union. 3. Enlargement and Differentiated Integration in the European Union, 4. Ever Closer or ever wider? Public attitudes towards further enlargement and integration in the European Union, 5. Domestic Politics and the "Widening-Deepening" trade-off in the European Union, 6. Who Measures Up? Human Rights in an Enlarging European Union. 7. Depth and Width in Regional Economic Organizations, 8. Why Widening Makes Deepening: Unintended Policy Extension through Polity Expansion, 9. Enlargement and the anticipatory deepening of European integration, 10. Necessary deepening? How political groups in the European Parliament adapt to enlargement