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Pacific Research Institute - San Francisco-based public policy think tank promoting individual freedom and personal responsibility.

Palmetto Institute - A public policy organization dedicated to creating a business, political and educational environment that increases the personal wealth of every citizen of South Carolina as measured by per capita income.

Pioneer Institute - A Boston-based public policy research institute advocating individual freedom and responsibility, limited and accountable government, and expanded application of free-market principles.

Policy Development - Policy Development brings the first-hand experience of direct service organizations to high-level policy debate, while bringing greater policy awareness to direct service program planning.

Political Research Associates - Monitors and analyzes the organizations, leaders, ideas, and activities of the US political right.

The Priorities Institute - Explores regional land use planning, sustainable, carfree city design, 21st century constitutions, holistic indexing

Progressive Policy Institute - A public policy center shaping the "Third Way" governing agenda.

Project California - A 501(c)(4) nonprofit organization that brings together recognized experts, opinion leaders, and everyday Californians to develop and explore fresh, innovative solutions to the challenges facing our state in the coming decades.

Public Interest Institute - A non-profit, non-partisan, public policy research organization located on the campus of Iowa Wesleyan College in Mt. Pleasant, Iowa. The Institute promotes the importance of a free-enterprise economic system and limited government in society based upon individual freedom and liberty.

Public Policy Forum - A nonpartisan public policy research organization and good government watchdog.

Public Policy Institute of California - A private, non profit organization dedicated to independent, nonpartisan research on California's economic, social, and political issues.

Public/Private Ventures - An action-based research, public policy and program development organization. Published reports on youth, labor market, community and faith-based initiatives, as well as program replication.