| Jeff Smith | Agribusiness Association of Iowa | Supporting | GA88 |
| Jerry Fitzgerald | Agribusiness Association of Iowa | Supporting | GA88 |
| Maggie Smith-Fitzgerald | Agribusiness Association of Iowa | Supporting | GA88 |
| Matt Fitzgerald | Agribusiness Association of Iowa | Supporting | GA88 |
| Stephanie See | Association of Equipment Manufacturers | Supporting | GA88 |
| Brad Epperly | BNSF Railway Co. | Undecided | GA88 |
| Dustin Miller | BNSF Railway Co. | Undecided | GA88 |
| Katie Graham | BNSF Railway Co. | Undecided | GA88 |
| Paula Dierenfeld | BNSF Railway Co. | Undecided | GA88 |
| Kate Walton | CN Rail | Undecided | GA88 |
| Matt Eide | CN Rail | Undecided | GA88 |
| George Whitaker | CNH Industrial, LLC | Supporting | GA88 |
| Stacey Pellett | Deere & Company | Supporting | GA88 |
| Kellie Paschke | Iowa Cattlemen's Association | Undecided | GA88 |
| Troy Skinner | Iowa Cattlemen's Association | Undecided | GA88 |
| Susan Fenton | Iowa Dept. of Transportation | Undecided | GA88 |
| Dane Schumann | Iowa Farmers Union | Undecided | GA88 |
| Maddie Wilcox | Iowa Farmers Union | Undecided | GA88 |
| Threase Harms | Iowa Farmers Union | Undecided | GA88 |
| Bobby Martens | Iowa Institute for Cooperatives | Supporting | GA88 |
| Katie Hall | Iowa Institute for Cooperatives | Supporting | GA88 |
| David Adelman | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA88 |
| Frank Chiodo | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA88 |
| Matt Hinch | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA88 |
| Sara Allen | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA88 |
| Mike Heller | Iowa Renewable Fuels Association (IRF) | Undecided | GA88 |
| Paula Feltner | Iowa Renewable Fuels Association (IRF) | Undecided | GA88 |
| Jill Altringer | Iowa Soybean Association | Supporting | GA88 |
| Jamie Cashman | Iowa State Association of Counties | Opposing | GA88 |
| Kristi Harshbarger | Iowa State Association of Counties | Opposing | GA88 |
| Lucas Beenken | Iowa State Association of Counties | Opposing | GA88 |
| William Peterson | Iowa State Association of Counties | Opposing | GA88 |
| Jamie Cashman | Iowa State Association of County Supervisors | Opposing | GA88 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Opposing | GA88 |
| Lucas Beenken | Iowa State Association of County Supervisors | Opposing | GA88 |
| William Peterson | Iowa State Association of County Supervisors | Opposing | GA88 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA88 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA88 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA88 |
| Brad Epperly | Monsanto Company | Supporting | GA88 |
| Dustin Miller | Monsanto Company | Supporting | GA88 |
| Katie Graham | Monsanto Company | Supporting | GA88 |
| Gary Grant | Urban County Coalition | Undecided | GA88 |
| Larry Murphy | Urban County Coalition | Undecided | GA88 |
| Meghan Malloy | Urban County Coalition | Undecided | GA88 |