Jeffrey M. Berry is Professor of Political Science at Tufts University.Clyde Wilcox is Professor in the Government Department at Georgetown University.

• 1. Madison’s Dilemma 2. The Advocacy Explosion 3. The Party Connection 4. Mobilization and Organization 5. Lobbyists 6. Public Opinion and Grassroots Lobbying 7. Political Action Committees 8. Washington Lobbying 9. The Rise of Issue Networks 10. Bias and Representation

Praise for the Sixth EditionFor a decade, The Interest Group Society has been my go-to book when teaching students about interest groups. It applies major theoretical concepts to modern phenomena in a straightforward way, and its comprehensive treatment of the literature is well-integrated with careful consideration of current events. This new edition does not disappoint. I would recommend it as essential reading for any course that includes a focus on interest groups.Amy McKay, University of ExeterThe Interest Group Society has provided the continuity in my courses on interest groups for over twenty years. No one does it better than Berry and Wilcox: They weave contemporary discussions of the changing legal and political environments, 527s, the Tea Party, and Black Lives Matter into the contextual tapestry of James Madison's classic dilemma and the most recent scholarship in the field. Each edition brings a new generation of students into the fascinating world of organized interests.Kevin W. Hula, Loyola University Maryland

Jeffrey M. Berry is Professor of Political Science at Tufts University.Clyde Wilcox is Professor in the Government Department at Georgetown University.

• 1. Madison’s Dilemma 2. The Advocacy Explosion 3. The Party Connection 4. Mobilization and Organization 5. Lobbyists 6. Public Opinion and Grassroots Lobbying 7. Political Action Committees 8. Washington Lobbying 9. The Rise of Issue Networks 10. Bias and Representation

Praise for the Sixth EditionFor a decade, The Interest Group Society has been my go-to book when teaching students about interest groups. It applies major theoretical concepts to modern phenomena in a straightforward way, and its comprehensive treatment of the literature is well-integrated with careful consideration of current events. This new edition does not disappoint. I would recommend it as essential reading for any course that includes a focus on interest groups.Amy McKay, University of ExeterThe Interest Group Society has provided the continuity in my courses on interest groups for over twenty years. No one does it better than Berry and Wilcox: They weave contemporary discussions of the changing legal and political environments, 527s, the Tea Party, and Black Lives Matter into the contextual tapestry of James Madison's classic dilemma and the most recent scholarship in the field. Each edition brings a new generation of students into the fascinating world of organized interests.Kevin W. Hula, Loyola University Maryland

Jeffrey M. Berry is Professor of Political Science at Tufts University.Clyde Wilcox is Professor in the Government Department at Georgetown University.

• 1. Madison’s Dilemma 2. The Advocacy Explosion 3. The Party Connection 4. Mobilization and Organization 5. Lobbyists 6. Public Opinion and Grassroots Lobbying 7. Political Action Committees 8. Washington Lobbying 9. The Rise of Issue Networks 10. Bias and Representation

Praise for the Sixth EditionFor a decade, The Interest Group Society has been my go-to book when teaching students about interest groups. It applies major theoretical concepts to modern phenomena in a straightforward way, and its comprehensive treatment of the literature is well-integrated with careful consideration of current events. This new edition does not disappoint. I would recommend it as essential reading for any course that includes a focus on interest groups.Amy McKay, University of ExeterThe Interest Group Society has provided the continuity in my courses on interest groups for over twenty years. No one does it better than Berry and Wilcox: They weave contemporary discussions of the changing legal and political environments, 527s, the Tea Party, and Black Lives Matter into the contextual tapestry of James Madison's classic dilemma and the most recent scholarship in the field. Each edition brings a new generation of students into the fascinating world of organized interests.Kevin W. Hula, Loyola University Maryland