| Melissa Speed | AFSCME Iowa Council 61 | Undecided | GA90 |
| Brad Epperly | Ames Regional Economic Alliance | Undecided | GA90 |
| Casey Nickel | Ames Regional Economic Alliance | Undecided | GA90 |
| Dustin Miller | Ames Regional Economic Alliance | Undecided | GA90 |
| Barbra Solberg | Cedar Rapids Metro Economic Alliance | Supporting | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Supporting | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Withdrawn | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Andrea Woodard | Greater Des Moines Partnership | Supporting | GA90 |
| Brad Epperly | Greater Des Moines Partnership | Supporting | GA90 |
| Casey Nickel | Greater Des Moines Partnership | Supporting | GA90 |
| Dustin Miller | Greater Des Moines Partnership | Supporting | GA90 |
| Ryan Moon | Greater Des Moines Partnership | Supporting | GA90 |
| Nick Laning | IBEW Iowa State Conference | Undecided | GA90 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA90 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA90 |
| John Davis | Iowa Association of Business and Industry (ABI) | Undecided | GA90 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA90 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA90 |
| Emily Piper | Iowa Association of School Boards | Undecided | GA90 |
| Michelle Johnson | Iowa Association of School Boards | Undecided | GA90 |
| Carolann Jensen | Iowa Board of Regents | Undecided | GA90 |
| Jennifer Harbison | Iowa Board of Regents | Undecided | GA90 |
| Jillian Carlson | Iowa Board of Regents | Undecided | GA90 |
| Keith Saunders | Iowa Board of Regents | Undecided | GA90 |
| Joe Murphy | Iowa Business Council | Supporting | GA90 |
| Brad Epperly | Iowa Chamber Alliance | Supporting | GA90 |
| Casey Nickel | Iowa Chamber Alliance | Supporting | GA90 |
| Dustin Miller | Iowa Chamber Alliance | Supporting | GA90 |
| Deanna Triplett | Iowa Economic Development Authority | Undecided | GA90 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Undecided | GA90 |
| Melissa Peterson | Iowa State Education Association | Undecided | GA90 |
| Morgan Miller | Iowa State Education Association | Undecided | GA90 |
| Dylan Gramlich | Laborers International Union of North America | Undecided | GA90 |
| John Hall | Marshalltown Area Chamber of Commerce | Supporting | GA90 |
| Christopher Rants | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA90 |
| Justin Hupfer | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA90 |
| BRITTANY LUMLEY | MercyOne | Supporting | GA90 |
| Courtney Craig | MercyOne | Supporting | GA90 |
| Elliott Meyer | MercyOne | Supporting | GA90 |
| Jeffrey Boeyink | MercyOne | Supporting | GA90 |
| Christopher Rants | NECA - Iowa (NEC) | Undecided | GA90 |
| John Cacciatore | NECA - Iowa (NEC) | Undecided | GA90 |
| Justin Hupfer | NECA - Iowa (NEC) | Undecided | GA90 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA90 |
| Chloe Gayer | Professional Developers of Iowa (PDI) | Undecided | GA90 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA90 |
| Nathaniel Arnold | Professional Educators of Iowa | Undecided | GA90 |
| Brad Epperly | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Casey Nickel | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Dustin Miller | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Ryan Sempf | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Dave Daughton | Rural School Advocates of Iowa | Supporting | GA90 |
| Margaret Buckton | Rural School Advocates of Iowa | Supporting | GA90 |
| Dave Daughton | School Administrators of Iowa | Supporting | GA90 |
| Margaret Buckton | Urban Education Network of Iowa | Supporting | GA90 |