In Farmed Out, Clare R. Brock uses U.S. agricultural policy as a vehicle to explain how the rapidly polarizing political environment has altered the role of interest groups in Washington. Drawing on over two decades of lobbying behavior data in the agricultural sector, Brock argues that polarization has given interest groups greater influence over policy content, particularly among their ideological and partisan allies. Brock makes an important and original contribution to our understanding of how interest groups now operate within a context of heightened partisanship, lengthened time horizons, and declining institutional capacity.