The American Presidency Project
A collaborative effort from the University of California at Santa Barbara, these archives contain 104,106 documents related to the study of the Presidency. Includes voter turnout, financing elections, election documents, speeches, briefings, statements, and much more.
Pew Research Center
Pew Research Center is a nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping America and the world. It conducts public opinion polling, demographic research, media content analysis and other empirical social science research. Pew Research does not take policy positions. It is a subsidiary of The Pew Charitable Trusts.
Provides data-driven news based on U.S. and world polls, daily tracking and public opinion research. Articles and videos cover news, politics, government, business, economy, behavioral economics, management
From the Public Opinion Analysis sector of the EU, this site includes public opinion research on major topics concerning European citizenship.