Pew Research Center is a nonpartisan United States 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.
RAND is a nonprofit institution. RAND research is commissioned by a global clientele that includes government agencies, foundations, and private-sector firms.
Gallup.com provides data-driven news based on U.S. and world polls, daily tracking and public opinion research.