| Zogby International A leading polling firms in the United States and the official North American and South American political polling agency for Reuters. | |
| WebPoll.biz On-line public opinion research firm specializing in database surveys. | |
| Viewpoint USA public opinion research organization located in Guilford, Connecticut offering political polling and marketing research. | |
| The Tarrance Group A national Republican polling firm, providing polls, election information, and related services. | |
| SurveyUSA Conducts interactive, fast-turn, affordable public opinion polls and private market research for the nation's most discriminating clients. | |
| Southern Opinion Research A survey research company specializing in political and election surveys, litigation services, church and religious organizational surveys and media research. | |
| Scientific Marketing Analysis A public opinion, market research and political consulting firm specializing in polling for Republican candidates, corporations and interest groups. | |
| Schapiro Research Group National political and public opinion polling firm which provides public opinion research and strategies. | |
| Research 2000 Olney, Maryland-based polling and research firm specializing in U.S. state and local elections. Staff and company profiles, op-eds, media citations, and poll result archives included. | |
| Public Opinion Strategies a national Republican political and public affairs research firm with its roots in political campaigns, its research is focused on producing information that drives decisions and results. | |
| PRiMeR, Ltd. Providing opinion research and polling for candidates, organizations, and governments in the US and worldwide. Capabilities include focus groups, face-to-face interviews, and telephone surveys. | |
| The Polling Company A full-service market research, public affairs and political consulting firm with offices in Washington and San Francisco. | |
| Pineda Consulting A California-based, Latino-owned firm specializing in political polling, strategic research and communications. | |
| Opinion Dynamics Corporation Full-service market research firm in energy/utility, associations, ballot measure, health care, education, and other areas. | |
| Moore Information, Inc. provides public opinion research for campaigns and corporations across the United States. Facilities located in Portland Oregon. | |
| McLaughlin and Associates: McLaughlinOnline.com An international survey research and strategic services company, specializing in public opinion polls, market research, strategic consulting services, and media buying. | |
| Mason-Dixon Polling and Research A major US political polling firm specializing in state polls. | |
| Hill Research Consultants A national firm that has provided accurate and cost-effective public opinion polling and market research since 1988 to political campaigns, corporations, schools, law firms, and associations. | |
| Harstad Strategic Research, LLC Boulder, Colorado, political polling, PR research, market research, and strategic consulting firm which offers strategies for positioning, messaging, marketing, and targeting. | |
| Hamilton Beattie & Staff Offices in Washington, DC and Femandina Beach, FL. Clients include political parties, candidates, media, issues advocacy, referenda, and major corporations. | |