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Political Science

Provides free and subscription resource recommendations in general and various political science subfields. Includes listings of the most widely used political science data and statistical resources.


When conducting U.S. government and legal research it is important to understand the basics of how the government is organized. This will help you determine which resources to choose in order to locate particular documentation. The Constitution of the United States divides the federal government into three branches:

  1. Legislative – Makes laws (Congress)
  2. Executive – Carries out laws (President, Vice President, Cabinet)
  3. Judicial – Evaluates and interprets laws (Supreme Court and other courts)

The websites and databases listed in this section will lead you to the most comprehensive resources for U.S. government documents available free online or through Penn Library subscription. For an in-depth guide on U.S. Government Documents go to U.S. Government Documents: Major Indexes and Documents at Penn.

Main Sources of U.S. Government Documents

Law Journals and Reviews

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