Structuring the Inquiry into Advocacy, the Spring/Summer 2000 series, introduced advocacy as a concept, highlighted the experiences of different kinds of advocacy organizations, identified structural gaps in current regulation, and examined how groups adapt political practices in the political system. Four papers were presented during the Spring/Summer 2000 series. This volume contains the complete text of each paper and three separate appendixes with summaries of related discussions. Each session brought together persons of diverse experiences and new perspectives around nonprofit advocacy issues. We hope that the themes discussed in this volume will lead toward a multidisciplinary framework for policy analysis and further research.