| Melissa Speed | AFSCME Iowa Council 61 | Opposing | GA89 |
| Brad Epperly | AIG-American International Companies | Undecided | GA89 |
| Dustin Miller | AIG-American International Companies | Undecided | GA89 |
| Brad Epperly | Ames Chamber of Commerce | Undecided | GA89 |
| Dustin Miller | Ames Chamber of Commerce | Undecided | GA89 |
| Sydney Gangestad | CHILDSERVE | Undecided | GA89 |
| Tim Coonan | CHILDSERVE | Undecided | GA89 |
| Barbra Solberg | Cedar Rapids Metro Economic Alliance | Undecided | GA89 |
| Drew Kamp | Council Bluffs Chamber of Commerce | Undecided | GA89 |
| Clara Wulfsen | Department of Revenue | Undecided | GA89 |
| Ryan Sempf | Dubuque Area Chamber of Commerce | Supporting | GA89 |
| Ryan Sempf | Dubuque Area Chamber of Commerce | Undecided | GA89 |
| Andrea Woodard | Greater Des Moines Partnership | Undecided | GA89 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA89 |
| Dustin Miller | Greater Des Moines Partnership | Undecided | GA89 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Undecided | GA89 |
| Jay Iverson | Home Builders Association of Iowa | Undecided | GA89 |
| Nick Laning | IBEW Iowa State Conference | Opposing | GA89 |
| Nick Laning | IBEW Iowa State Conference | Undecided | GA89 |
| Threase Harms | IBEW Iowa State Conference | Opposing | GA89 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA89 |
| Michael McCarthy | Iowa Alliance For Retired Americans | Opposing | GA89 |
| Sydney Gangestad | Iowa Automatic Merchandising Association | Undecided | GA89 |
| Tim Coonan | Iowa Automatic Merchandising Association | Undecided | GA89 |
| Mike Rozenboom | Iowa Bankers Association | Undecided | GA89 |
| Sharon Presnall | Iowa Bankers Association | Undecided | GA89 |
| David Adelman | Iowa Biotechnology Association | Undecided | GA89 |
| Frank Chiodo | Iowa Biotechnology Association | Undecided | GA89 |
| Jessica Hyland | Iowa Biotechnology Association | Undecided | GA89 |
| Lillie Brady | Iowa Biotechnology Association | Undecided | GA89 |
| Matt Hinch | Iowa Biotechnology Association | Undecided | GA89 |
| Sara Allen | Iowa Biotechnology Association | Undecided | GA89 |
| James Kersten | Iowa Central Community College | Undecided | GA89 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA89 |
| Dustin Miller | Iowa Chamber Alliance | Undecided | GA89 |
| Chelsea Hoye | Iowa Cosmetology School Association | Undecided | GA89 |
| Emilee Harris-Puricelli | Iowa Cosmetology School Association | Undecided | GA89 |
| Nick Laning | Iowa Cosmetology School Association | Undecided | GA89 |
| Threase Harms | Iowa Cosmetology School Association | Undecided | GA89 |
| Deanna Triplett | Iowa Economic Development Authority | Undecided | GA89 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA89 |
| Erin Cubit | Iowa Hospital Association | Undecided | GA89 |
| Jamie Horbach | Iowa Hospital Association | Undecided | GA89 |
| Jennifer Klein | Iowa Hospital Association | Undecided | GA89 |
| Maureen Keehnle | Iowa Hospital Association | Undecided | GA89 |
| Sydney Gangestad | Iowa Physician Assistant Society | Undecided | GA89 |
| Tim Coonan | Iowa Physician Assistant Society | Undecided | GA89 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Michael Gronstal | Iowa State Building and Construction Trades | Opposing | GA89 |
| Jake Ketzner | Iowa Total Care, A Subsidiary of Centene Corporation | Undecided | GA89 |
| Marc Beltrame | Iowa Total Care, A Subsidiary of Centene Corporation | Undecided | GA89 |
| Stacie Maass | Iowa Total Care, A Subsidiary of Centene Corporation | Undecided | GA89 |
| Kate Walton | Iowa Wine Growers Association | Undecided | GA89 |
| Madeleine Bradley | Iowa Wine Growers Association | Undecided | GA89 |
| Matt Eide | Iowa Wine Growers Association | Undecided | GA89 |
| John Hall | Marshalltown Area Chamber of Commerce | Undecided | GA89 |
| Christopher Rants | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA89 |
| Justin Hupfer | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA89 |
| Christopher Rants | NECA - Iowa (NEC) | Undecided | GA89 |
| Justin Hupfer | NECA - Iowa (NEC) | Undecided | GA89 |
| Dane Schumann | North Central States Regional Council of Carpenters | Opposing | GA89 |
| Felicia Hilton | North Central States Regional Council of Carpenters | Opposing | GA89 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Opposing | GA89 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA89 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA89 |
| Brad Epperly | Quad Cities Chamber of Commerce | Undecided | GA89 |
| Dustin Miller | Quad Cities Chamber of Commerce | Undecided | GA89 |
| Steven Schoenebaum | Smithfield Foods, Inc. | Undecided | GA89 |
| Jim Romar | Teamsters Local 238 | Opposing | GA89 |
| Sydney Gangestad | Technology Association of Iowa | Undecided | GA89 |
| Tim Coonan | Technology Association of Iowa | Undecided | GA89 |
| Kelli Harrison | UAW Region 4 | Opposing | GA89 |
| Karl Schilling | United Professionals/UE | Opposing | GA89 |
| Brandon Geib | Wellmark, Inc. | Undecided | GA89 |
| Scott Sundstrom | Wellmark, Inc. | Undecided | GA89 |