Council of American Survey Research Organizations (CASRO)
Trade association of survey research businesses, representing nearly 200 companies and research operations in the United States, Canada, and Mexico.
www.casro.org

Hamilton Beattie & Staff
Founded in 1964, HB&S is among the oldest political research firms in the country.
www.hbstaff.com

Marketing Research Association
A recognized leader in the marketing and opinion research industry, promoting excellence in data collection and information processing.
www.mra-net.org

Mathew Greenwald & Associates
Is a premier public opinion and market research company that has conducted customized research since 1985.
www.greenwaldresearch.com