Although it sometimes seems that governmental policies rarely change, American state governments do adopt innovations. This study considers why the states try new approaches to policy problems. It analyzes innovations from campaign financing and sunset laws to public transportation and regulating sexual behavior, seeking to determine what forces produce policy changes. Policy Innovation in State Government, the result of studies considering individual innovations, is an effort to make sense of a striking finding: State characteristics that largely accounted for some changes were of no value in accounting for others. Nice proposes a general theory based on a state's problem environment, resources, and orientation to government power. This is a book that examines an important question, offers an interesting theory, and makes a reasonable effort to test it. It will be valuable for those interested in state government, public policy-making, intergovernmental relations, and public administration.