The American National Election Studies (ANES) produces high quality data on voting, public opinion, and political participation to serve the research needs of social scientists, teachers, students, policy makers and journalists who want to better understand the theoretical and empirical foundations of national election outcomes.

The Bureau of Justice Statistics regularly publishes information about crime committed in the United States. On its website, it offers key facts and often statistical charts describing trends in crime.

The FBI publishes or contributes to a series of statistical crime reports and publications, detailing specific offenses and outlining trends that can help you better understand crime threats both nationally and locally.

The Federal Election Commission's Campaign Finance Disclosure Portal provides a single point of entry to campaign finance data.

The GDELT Project monitors the world's broadcast, print, and web news from nearly every corner of every country in over 100 languages and identifies the people, locations, organizations, counts, themes, sources, emotions, counts, quotes and events driving our global society every second of every day.

The Global Database on Elections and Democracy currently incorporates data on voter turnout, gender quotas, political finance, electoral management and system design, electoral justice, and more.

The Global Terrorism Database (GTD) is an open-source database including information on terrorist events around the world from 1970 through 2014 (with annual updates planned for the future).

Contains state and international data and includes information on abortion, adolescents, contraception, pregnancy, and state policies, services, and financing.

This site contains key data sets published by the Office of Immigration Statistics, including profiles on legal permanent residents and naturalized citizens as well as maps representing U.S. migration data.

The Policy Agendas Project collects and organizes data from various archived sources to trace changes in the national policy agenda and public policy outcomes since the Second World War.

This site contains quantitative and qualitative data on war and peacekeeping.

This resource offers detailed data on federally-prosecuted cases, convictions, and sentences by type of crime and state. The reports offer information on both civil and criminal litigation, including violent crime, white collar crime, and immigration