| Brad Epperly | BNSF Railway Co. | Undecided | GA85 |
| Paula Dierenfeld | BNSF Railway Co. | Undecided | GA85 |
| Scott Sundstrom | BNSF Railway Co. | Undecided | GA85 |
| Matt Gronewald | Iowa Dept. of Agriculture | Undecided | GA85 |
| Doug Struyk | Iowa Drainage District Association | Supporting | GA85 |
| George Appleby | Iowa Drainage District Association | Supporting | GA85 |
| Jennifer Tyler | Iowa Drainage District Association | Supporting | GA85 |
| Jim Carney | Iowa Drainage District Association | Supporting | GA85 |
| John Torbert | Iowa Drainage District Association | Supporting | GA85 |
| Mona Bond | Iowa Drainage District Association | Supporting | GA85 |
| Jim Obradovich | Iowa Environmental Council | Undecided | GA85 |
| Robert Mulqueen | Iowa Environmental Council | Undecided | GA85 |
| Courtney Willits | Iowa Farmers Union | Undecided | GA85 |
| Kent Hartwig | Iowa Farmers Union | Undecided | GA85 |
| Threase Harms | Iowa Farmers Union | Undecided | GA85 |
| Courtney Willits | Iowa Rivers Revival | Undecided | GA85 |
| Kent Hartwig | Iowa Rivers Revival | Undecided | GA85 |
| Threase Harms | Iowa Rivers Revival | Undecided | GA85 |
| Jim Obradovich | Iowa Shortline and Regional Railroad Association | Undecided | GA85 |
| Hanna DeGroot | Iowa State Association of Counties | Undecided | GA85 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA85 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA85 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA85 |
| William Peterson | Iowa State Association of Counties | Undecided | GA85 |
| Dennis Parrott | Iowa State Association of County Auditors | Supporting | GA85 |
| William Heckroth | Iowa State Association of County Supervisors | Undecided | GA85 |
| Brian Johnson | Polk County - Board of Supervisors | Undecided | GA85 |
| Steven Schoenebaum | Smithfield Foods, Inc. | Undecided | GA85 |