| Jim Obradovich | Coalition for Iowa Woodlands and Trees | Undecided | GA87 |
| Brad Epperly | Helena Agri-Enterprises, LLC | Undecided | GA87 |
| Dustin Miller | Helena Agri-Enterprises, LLC | Undecided | GA87 |
| Katie Graham | Helena Agri-Enterprises, LLC | Undecided | GA87 |
| Paula Dierenfeld | Helena Agri-Enterprises, LLC | Undecided | GA87 |
| Kellie Paschke | Iowa Cattlemen's Association | Undecided | GA87 |
| Troy Skinner | Iowa Cattlemen's Association | Undecided | GA87 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA87 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA87 |
| Jake Swanson | Iowa Dept. of Agriculture | Supporting | GA87 |
| Susan Fenton | Iowa Dept. of Transportation | Undecided | GA87 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA87 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA87 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA87 |
| William Peterson | Iowa State Association of Counties | Undecided | GA87 |
| Brad Epperly | Monsanto Company | Undecided | GA87 |
| Dustin Miller | Monsanto Company | Undecided | GA87 |
| Katie Graham | Monsanto Company | Undecided | GA87 |
| Brad Epperly | Resources Environmental Solutions | Undecided | GA87 |
| Dustin Miller | Resources Environmental Solutions | Undecided | GA87 |
| Katie Graham | Resources Environmental Solutions | Undecided | GA87 |
| Paula Dierenfeld | Resources Environmental Solutions | Undecided | GA87 |