| 720Strategies |
| Advocacy Associates |
| Aerospace Industries Association |
| American Academy of Dermatology |
| American Academy of Otolaryngic Allergy (AAOA) |
| American Association for Justice (AAJ) |
| American Association of Life Underwriting |
| American Civil Liberties Union (ACLU) |
| American Friends of Lubuvitch (AFL) |
| American Israel Public Affairs Committee (AIPAC) |
| American Nurses Association |
| American Wind Energy Association (AWEA) |
| Anti-Defamation League (ADL) |
| Archer Daniels Midland Company (ADM) |
| AREVA Federal Services LLC |
| Association of American Veterinary Medical Colleges (AAVMC) |
| Association of Public Television Stations (APTS) |
| Ballot Initiative Strategy Center (BISC) |
| Baron Public Affairs LLC |
| Belden Russonello Strategists |
| Berger-Marks Foundation |
| Bockorny Group |
| Brady Campaign to Prevent Gun Violence |
| Bread for the World |
| Brodie Collins Consulting (BCC Associates) |
| Brookings Institution |
| Brunswick Group |
| Bunge |
| Buying Time |
| Citizens for Responsibility and Ethics in Washington (CREW) |
| Civic Ventures |
| College of American Pathologists (CAP) |
| Congressional Hunger Center |
| Consumers for Dental Choice |
| Cubist |
| Curley Company |
| Davies Public Affairs |
| Democracy Alliance |
| Democratic Congressional Campaign Committee (DCCC) |
| Democratic Legislative Campaign Committee (DLCC) |
| Dezenhall Resources |
| Dixon/Davis Media Group |
| Dutko Grayling |
| Edison Electric Institute |
| Federal Home Loan Bank of San Francisco |
| Fieldworks |
| Financial Times |
| Garten Rothkopf |
| Genocide Intervention Network/Save Darfur Coalition |
| Golin Harris |
| Greer, Margolis, Mitchell, Burns (GMMB) |
| Growth Energy |
| Heart Rhythm Society |
| Hill and Knowlton |
| Hope Street Group |
| International Association of Fire Fighters |
| Junior Statesmen Foundation |
| Justice at Stake Campaign |
| Kinsella Media |
| Lake Research Partners |
| Lipman Hearne Inc. |
| Long Term Care Pharmacy Alliance |
| M & R Strategic Services |
| Marathon Oil |
| mCapitol Management |
| Mehlman Vogel Castagnetti |
| Men’s Health Network |
| Mundy Katowitz Media, Inc. |
| Nancy Jacobson Associates |
| NARAL Pro-Choice America |
| National Academy for State Health Policy (NASHP) |
| National Association for the Advancement of Colored People (NAACP) |
| National Association of Realtors |
| National Audubon Society |
| National Automobile Dealers Association (NADA) |
| National Cable Communications (NCC) |
| National Conference of State Legislatures (NCSL) |
| National E-Health Collaborative |
| National Farmers Union |
| National Marrow Donor Program |
| National Partnership for Women and Families |
| National Treasury Employees Union (NTEU) |
| New Democrat Network (NDN) |
| Oceana |
| Open Society Institute |
| People for the American Way |
| Planned Parenthood Federation of America (PPFA) |
| Powell Tate |
| PPL Corporation |
| Property Casualty Insurers Association of America (PCIAA) |
| Public Opinion Strategies |
| Rabinowitz/Dorf Communications |
| Schrayer & Associates |
| Sierra Club |
| Strategy Group |
| T-Mobile USA Inc. |
| TechServe Alliance |
| The American Institute of Aeronautics and Astronautics (AIAA) |
| The Ashcroft Group, LLC |
| The Business Council for Sustainable Energy |
| The ERISA Industry Committee |
| The Ferguson Group |
| The Hatcher Group |
| The Mind Farm |
| Toy Industry Association |
| True Blue Inclusion |
| U.S. Global Leadership Coalition (USGLC) |
| Union of Concerned Scientists (USC) |
| United States Institute of Peace (USIP) |
| US House of Representatives |
| Viamedia |
| Violence Policy Center |
| Women in Government |
| Women Thrive Worldwide |
| YWCA USA |