| Brad Epperly | BNSF Railway Co. | Undecided | GA85 |
| Paula Dierenfeld | BNSF Railway Co. | Undecided | GA85 |
| Scott Sundstrom | BNSF Railway Co. | Undecided | GA85 |
| Angela Davis | Home Builders Association of Iowa | Undecided | GA85 |
| Bill Wimmer | Home Builders Association of Iowa | Undecided | GA85 |
| Kevin Condon | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Jennifer Kingland | Iowa Association of Realtors | Undecided | GA85 |
| Justine Stevenson | Iowa Cattlemen's Association | Undecided | GA85 |
| Kellie Paschke | Iowa Cattlemen's Association | Undecided | GA85 |
| Lindsay Phillips | Iowa Cattlemen's Association | Undecided | GA85 |
| Troy Skinner | Iowa Cattlemen's Association | 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 |
| Courtney Willits | Iowa Farmers Union | Undecided | GA85 |
| Kent Hartwig | Iowa Farmers Union | Undecided | GA85 |
| Threase Harms | Iowa Farmers Union | Undecided | GA85 |
| Mike St. Clair | Iowa Land Title Association | Undecided | GA85 |
| Mike Heller | Iowa Renewable Fuels Association (IRF) | Supporting | GA85 |
| Paula Feltner | Iowa Renewable Fuels Association (IRF) | Supporting | GA85 |
| William Heckroth | Iowa State Association of County Supervisors | Supporting | GA85 |
| Mike Heller | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA85 |
| Paula Feltner | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA85 |
| Steven Schoenebaum | Smithfield Foods, Inc. | Undecided | GA85 |
| Michael Triplett | Union Pacific Railroad | Undecided | GA85 |