| Joseph Buffington | County Planning and Zoning Officials of Iowa | Undecided | GA90 |
| John Cacciatore | Farm Credit Service of America | Undecided | GA90 |
| Justin Hupfer | Farm Credit Service of America | Undecided | GA90 |
| Cora Fox | Iowa Cattlemen's Association | Undecided | GA90 |
| Jake Swanson | Iowa Cattlemen's Association | Undecided | GA90 |
| Jessica Mazour | Iowa Chapter of Sierra Club | Opposing | GA90 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA90 |
| Todd Coffelt | Iowa Dept. of Natural Resources | Undecided | GA90 |
| Chelsea Hoye | Iowa Environmental Council | Opposing | GA90 |
| Threase Harms | Iowa Environmental Council | Opposing | GA90 |
| Chelsea Hoye | Iowa Farmers Union | Opposing | GA90 |
| Chelsea Hoye | Iowa Farmers Union | Undecided | GA90 |
| Threase Harms | Iowa Farmers Union | Opposing | GA90 |
| Threase Harms | Iowa Farmers Union | Undecided | GA90 |
| Ben Nuelle | Iowa Pork Producers Association | Undecided | GA90 |
| Jeff Smith | Iowa Pork Producers Association | Undecided | GA90 |
| Maggie Smith-Fitzgerald | Iowa Pork Producers Association | Undecided | GA90 |
| Matt Fitzgerald | Iowa Pork Producers Association | Undecided | GA90 |
| Kate Walton | Iowa Section American Water Works Association | Undecided | GA90 |
| Madeleine Bradley | Iowa Section American Water Works Association | Undecided | GA90 |
| Matt Eide | Iowa Section American Water Works Association | Undecided | GA90 |
| Jill Altringer | Iowa State Dairy Association | Undecided | GA90 |
| Dane Schumann | Izaak Walton League - Iowa Division | Undecided | GA90 |
| Amy Campbell | League of Women Voters of Iowa | Undecided | GA90 |
| Chloe Gayer | League of Women Voters of Iowa | Undecided | GA90 |
| Craig Patterson | League of Women Voters of Iowa | Undecided | GA90 |