| Jeff Smith | Agribusiness Association of Iowa | Supporting | GA89 |
| Maggie Smith-Fitzgerald | Agribusiness Association of Iowa | Supporting | GA89 |
| Matt Fitzgerald | Agribusiness Association of Iowa | Supporting | GA89 |
| Brad Epperly | BNSF Railway Co. | Opposing | GA89 |
| Brad Epperly | BNSF Railway Co. | Undecided | GA89 |
| Dustin Miller | BNSF Railway Co. | Opposing | GA89 |
| Dustin Miller | BNSF Railway Co. | Undecided | GA89 |
| Jim Obradovich | Boone and Scenic Valley Railroad | Opposing | GA89 |
| Robert Mulqueen | Boone and Scenic Valley Railroad | Opposing | GA89 |
| Michael Walker | Brotherhood of Locomotive Engineers and Trainmen | Undecided | GA89 |
| Jim Obradovich | Burlington Junction Railway | Opposing | GA89 |
| Robert Mulqueen | Burlington Junction Railway | Opposing | GA89 |
| Kate Walton | CN Rail | Opposing | GA89 |
| Kate Walton | CN Rail | Undecided | GA89 |
| Madeleine Bradley | CN Rail | Opposing | GA89 |
| Madeleine Bradley | CN Rail | Undecided | GA89 |
| Matt Eide | CN Rail | Opposing | GA89 |
| Matt Eide | CN Rail | Undecided | 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 |
| Jeff Smith | Iowa Corn Growers Association | Supporting | GA89 |
| Maggie Smith-Fitzgerald | Iowa Corn Growers Association | Supporting | GA89 |
| Matt Fitzgerald | Iowa Corn Growers Association | Supporting | GA89 |
| Mindy Poldberg | Iowa Corn Growers Association | Supporting | GA89 |
| Lyle Brehm | Iowa County Engineers Association | Undecided | GA89 |
| Colin Tadlock | Iowa Department of Agriculture & Land Stewardship | Undecided | GA89 |
| Emilee Harris-Puricelli | Iowa Farmers Union | Undecided | GA89 |
| Nick Laning | Iowa Farmers Union | Undecided | GA89 |
| Threase Harms | Iowa Farmers Union | Undecided | GA89 |
| Bobby Martens | Iowa Institute for Cooperatives | Supporting | GA89 |
| Rebecca Boyer | Iowa Institute for Cooperatives | Supporting | GA89 |
| Jim Obradovich | Iowa Interstate Railroad | Opposing | GA89 |
| Robert Mulqueen | Iowa Interstate Railroad | Opposing | GA89 |
| David Scott | Iowa Motor Truck Association | Undecided | GA89 |
| Marc Beltrame | Iowa Motor Truck Association | Undecided | GA89 |
| Ben Nuelle | Iowa Pork Producers Association | Supporting | GA89 |
| Jeff Smith | Iowa Pork Producers Association | Supporting | GA89 |
| Maggie Smith-Fitzgerald | Iowa Pork Producers Association | Supporting | GA89 |
| Matt Fitzgerald | Iowa Pork Producers Association | Supporting | GA89 |
| Jill Altringer | Iowa Poultry Association | Undecided | GA89 |
| Doug Struyk | Iowa Soybean Association | Supporting | GA89 |
| Jennifer Dorman | Iowa Soybean Association | Supporting | GA89 |
| Jim Carney | Iowa Soybean Association | Supporting | GA89 |
| Michael Dolch | Iowa Soybean Association | Supporting | GA89 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA89 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA89 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA89 |
| William Peterson | Iowa State Association of Counties | Undecided | GA89 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA89 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA89 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA89 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA89 |
| Jill Altringer | Iowa State Dairy Association | Undecided | GA89 |
| Jill Altringer | Iowa Turkey Federation | Undecided | GA89 |
| Chris Smith | SMART-Transportation Division | Undecided | GA89 |
| Michael Triplett | Union Pacific Railroad | Opposing | GA89 |