| Brian Guillaume | AFSCME Iowa Council 61 | Undecided | GA85 |
| Joe Nehring | AFSCME Iowa Council 61 | Undecided | GA85 |
| Marcia Nichols | AFSCME Iowa Council 61 | Undecided | GA85 |
| Morgan Miller | AFSCME Iowa Council 61 | Undecided | GA85 |
| Brad Epperly | AIG-American International Companies | Undecided | GA85 |
| Paula Dierenfeld | AIG-American International Companies | Undecided | GA85 |
| Scott Sundstrom | AIG-American International Companies | Undecided | GA85 |
| Rita Bettis Austen | American Civil Liberties Union of Iowa (ACLU-IA) | Undecided | GA85 |
| Brad Epperly | American Insurance Association | Undecided | GA85 |
| Paula Dierenfeld | American Insurance Association | Undecided | GA85 |
| Scott Sundstrom | American Insurance Association | Undecided | GA85 |
| Brad Epperly | BNSF Railway Co. | Undecided | GA85 |
| Paula Dierenfeld | BNSF Railway Co. | Undecided | GA85 |
| Scott Sundstrom | BNSF Railway Co. | Undecided | GA85 |
| Midge Slater | Communications Workers of America Iowa State Council | Opposing | GA85 |
| Marty Ryan | Fawkes-Lee & Ryan Inc. | Undecided | GA85 |
| Stephanie Fawkes-Lee | Fawkes-Lee & Ryan Inc. | Undecided | GA85 |
| Brad Epperly | Federation of Iowa Insurers | Undecided | GA85 |
| Paula Dierenfeld | Federation of Iowa Insurers | Undecided | GA85 |
| Scott Sundstrom | Federation of Iowa Insurers | Undecided | GA85 |
| Connie Ryan | Interfaith Alliance of Iowa Action Fund | Undecided | GA85 |
| Kevin Condon | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA85 |
| Paula Dierenfeld | Iowa Association of Electric Cooperatives | Undecided | GA85 |
| Scott Sundstrom | Iowa Association of Electric Cooperatives | Undecided | GA85 |
| Tim Coonan | Iowa Association of Electric Cooperatives | Undecided | GA85 |
| Brad Epperly | Iowa Automobile Dealers Association | Undecided | GA85 |
| Paula Dierenfeld | Iowa Automobile Dealers Association | Undecided | GA85 |
| Scott Sundstrom | Iowa Automobile Dealers Association | Undecided | GA85 |
| Megan Tooker | Iowa Ethics and Campaign Disclosure Board | Supporting | GA85 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Undecided | GA85 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Opposing | GA85 |
| Brad Epperly | Iowa Grocery Industry Association | Undecided | GA85 |
| Paula Dierenfeld | Iowa Grocery Industry Association | Undecided | GA85 |
| Scott Sundstrom | Iowa Grocery Industry Association | Undecided | GA85 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA85 |
| Paula Dierenfeld | Iowa Society of Certified Public Accountants | Undecided | GA85 |
| Scott Sundstrom | Iowa Society of Certified Public Accountants | Undecided | GA85 |
| Brad Epperly | Isle of Capri Casinos, Inc. | Undecided | GA85 |
| Paula Dierenfeld | Isle of Capri Casinos, Inc. | Undecided | GA85 |
| Scott Sundstrom | Isle of Capri Casinos, Inc. | Undecided | GA85 |
| Brad Epperly | Johnson & Johnson Services, Inc. | Undecided | GA85 |
| Paula Dierenfeld | Johnson & Johnson Services, Inc. | Undecided | GA85 |
| Scott Sundstrom | Johnson & Johnson Services, Inc. | Undecided | GA85 |
| Susan Zalenski | Johnson & Johnson Services, Inc. | Undecided | GA85 |
| Amy Campbell | League of Women Voters of Iowa | Undecided | GA85 |
| Craig Patterson | League of Women Voters of Iowa | Undecided | GA85 |
| Brad Epperly | Monsanto Company | Undecided | GA85 |
| Scott Sundstrom | Monsanto Company | Undecided | GA85 |
| Mark Cooper | South Central Iowa Federation of Labor AFL-CIO | Undecided | GA85 |
| Andrea Rivera | United Auto Workers | Opposing | GA85 |