| John Pederson | ALCOA | Undecided | GA85 |
| Matt Eide | ALCOA | Undecided | GA85 |
| F. Thornton | Agri Drain Corp. | Undecided | GA85 |
| Jerry Fitzgerald | Agribusiness Association of Iowa | Undecided | GA85 |
| Maggie Smith-Fitzgerald | Agribusiness Association of Iowa | Undecided | GA85 |
| Marc Beltrame | Agribusiness Association of Iowa | Undecided | GA85 |
| Mark Joyce | Agribusiness Association of Iowa | Undecided | GA85 |
| Matt McKinney | Agribusiness Association of Iowa | Undecided | GA85 |
| Terry Harrmann | Alliant Energy Corporation | Undecided | GA85 |
| Frank Chiodo | Associated General Contractors of Iowa | Opposing | GA85 |
| Scott Newhard | Associated General Contractors of Iowa | Opposing | GA85 |
| Gary Grant | City of Cedar Rapids | Undecided | GA85 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA85 |
| Beverly Flores | Deere & Company | Opposing | GA85 |
| Josh Mandelbaum | Environmental Law and Policy Center | Supporting | GA85 |
| Steve Falck | Environmental Law and Policy Center | Supporting | GA85 |
| Kevin Condon | Iowa Association of Business and Industry (ABI) | Opposing | GA85 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Opposing | GA85 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Opposing | GA85 |
| David Goodner | Iowa Citizens for Community Improvement Action Fund | Undecided | GA85 |
| Jess Mazour | Iowa Citizens for Community Improvement Action Fund | Undecided | GA85 |
| Jerry Fitzgerald | Iowa Corn Growers Association(ICG) | Undecided | GA85 |
| Maggie Smith-Fitzgerald | Iowa Corn Growers Association(ICG) | Undecided | GA85 |
| Mark Joyce | Iowa Corn Growers Association(ICG) | Undecided | GA85 |
| Mindy Poldberg | Iowa Corn Growers Association(ICG) | Undecided | GA85 |
| Sharon Tahtinen | Iowa Dept. of Natural Resources | Undecided | GA85 |
| Jim Obradovich | Iowa Environmental Council | Supporting | GA85 |
| Robert Mulqueen | Iowa Environmental Council | Supporting | GA85 |
| Dane Schumann | Iowa Farmers Union | Undecided | GA85 |
| Kent Hartwig | Iowa Farmers Union | Undecided | GA85 |
| Threase Harms | Iowa Farmers Union | Undecided | GA85 |
| Dustin Miller | Iowa League of Cities | Opposing | GA85 |
| Jessica Hyland | Iowa League of Cities | Opposing | GA85 |
| Julie Smith | Iowa League of Cities | Opposing | GA85 |
| Jill Altringer | Iowa Poultry Association | Undecided | GA85 |
| Don Brazelton | Iowa Rivers Revival | Supporting | GA85 |
| Emily Piper | Iowa Rural Water Association | Opposing | GA85 |
| Carol Balvanz | Iowa Soybean Association | Undecided | GA85 |
| Jill Altringer | Iowa Soybean Association | Undecided | GA85 |
| Jill Altringer | Iowa Turkey Federation | Undecided | GA85 |
| Brad Epperly | Iowa Water Well Association | Undecided | GA85 |
| Paula Dierenfeld | Iowa Water Well Association | Undecided | GA85 |
| Scott Sundstrom | Iowa Water Well Association | Undecided | GA85 |
| Cal Hultman | Lafarge North American | Undecided | GA85 |
| Michael Triplett | Lafarge North American | Undecided | GA85 |
| Frank Chiodo | MidAmerican Energy Company | Opposing | GA85 |
| John Davis | MidAmerican Energy Company | Opposing | GA85 |
| Scott Newhard | MidAmerican Energy Company | Opposing | GA85 |
| George Appleby | SSAB (f/k/a IPSCO Steel) | Undecided | GA85 |
| Jennifer Tyler | SSAB (f/k/a IPSCO Steel) | Undecided | GA85 |
| Jim Carney | SSAB (f/k/a IPSCO Steel) | Undecided | GA85 |
| John Pederson | Tyson Foods, Inc. | Undecided | GA85 |
| Matt Eide | Tyson Foods, Inc. | Undecided | GA85 |