| Brad Epperly | Brightmark | Supporting | GA89 |
| Dustin Miller | Brightmark | Supporting | GA89 |
| Christopher Rants | Center for Rural Affairs | Supporting | GA89 |
| Cody Smith | Center for Rural Affairs | Supporting | GA89 |
| John Cacciatore | Center for Rural Affairs | Supporting | GA89 |
| Nick Laning | Des Moines Water Works | Undecided | GA89 |
| Threase Harms | Des Moines Water Works | Undecided | GA89 |
| Josh Mandelbaum | Environmental Law and Policy Center | Undecided | GA89 |
| Steve Falck | Environmental Law and Policy Center | Undecided | GA89 |
| Emma Schmit | Food & Water Watch | Opposing | GA89 |
| John Aspray | Food & Water Watch | Opposing | GA89 |
| Mackenzie Aime | Food & Water Watch | Opposing | GA89 |
| Kellie Paschke | Iowa Cattlemen's Association | Undecided | GA89 |
| Kelly Meyers | Iowa Cattlemen's Association | Undecided | GA89 |
| Logan Murray | Iowa Cattlemen's Association | Undecided | GA89 |
| Troy Skinner | Iowa Cattlemen's Association | Undecided | GA89 |
| Jessica Mazour | Iowa Chapter of Sierra Club | Opposing | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA89 |
| Adam Mason | Iowa Citizens for Community Improvement Action Fund | Opposing | GA89 |
| Ava Auen-Ryan | Iowa Citizens for Community Improvement Action Fund | Opposing | GA89 |
| Keisha Perkins | Iowa Citizens for Community Improvement Action Fund | Opposing | GA89 |
| Colin Tadlock | Iowa Department of Agriculture & Land Stewardship | Undecided | GA89 |
| Tammie Krausman | Iowa Dept. of Natural Resources | Undecided | GA89 |
| Angela Davis | Iowa Environmental Council | Undecided | GA89 |
| Hannah McDowell | Iowa Farmers Union | Undecided | GA89 |
| Nick Laning | Iowa Farmers Union | Undecided | GA89 |
| Threase Harms | Iowa Farmers Union | Undecided | GA89 |
| Drew Mogler | Iowa Pork Producers Association | Undecided | GA89 |
| Jeff Smith | Iowa Pork Producers Association | Undecided | GA89 |
| Jerry Fitzgerald | Iowa Pork Producers Association | Undecided | GA89 |
| Maggie Smith-Fitzgerald | Iowa Pork Producers Association | Undecided | GA89 |
| Matt Fitzgerald | Iowa Pork Producers Association | Undecided | GA89 |
| Jill Altringer | Iowa State Dairy Association | Supporting | GA89 |
| Kate Walton | POET, LLC | Undecided | GA89 |
| Matt Eide | POET, LLC | Undecided | GA89 |
| Steven Schoenebaum | Smithfield Foods, Inc. | Undecided | GA89 |
| Jim Obradovich | Trusted Energy | Supporting | GA89 |
| Robert Mulqueen | Trusted Energy | Supporting | GA89 |