| Brad Epperly | BNSF Railway Co. | Undecided | GA90 |
| Dustin Miller | BNSF Railway Co. | Undecided | GA90 |
| Jefferson Fink | Boone and Scenic Valley Railroad | Undecided | GA90 |
| Jim Obradovich | Boone and Scenic Valley Railroad | Undecided | GA90 |
| Michael Walker | Brotherhood of Locomotive Engineers and Trainmen | Supporting | GA90 |
| Jefferson Fink | Burlington Junction Railway | Undecided | GA90 |
| Jim Obradovich | Burlington Junction Railway | Undecided | GA90 |
| Kate Walton | CN Rail | Undecided | GA90 |
| Madeleine Bradley | CN Rail | Undecided | GA90 |
| Matt Eide | CN Rail | Undecided | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Jefferson Fink | Davenport Industrial Railroad | Undecided | GA90 |
| Jim Obradovich | Davenport Industrial Railroad | Undecided | GA90 |
| Josh Mandelbaum | Environmental Law and Policy Center | Undecided | GA90 |
| Steve Falck | Environmental Law and Policy Center | Undecided | GA90 |
| Andrea Woodard | Greater Des Moines Partnership | Supporting | GA90 |
| Andrea Woodard | Greater Des Moines Partnership | Undecided | GA90 |
| Brad Epperly | Greater Des Moines Partnership | Supporting | GA90 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA90 |
| Dustin Miller | Greater Des Moines Partnership | Supporting | GA90 |
| Dustin Miller | Greater Des Moines Partnership | Undecided | GA90 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Supporting | GA90 |
| Jefferson Fink | Iowa Interstate Railroad | Undecided | GA90 |
| Jim Obradovich | Iowa Interstate Railroad | Undecided | GA90 |
| Dylan Gramlich | Laborers International Union of North America | Supporting | GA90 |
| Jefferson Fink | Patriot Rail (Keokuk Junction Railway) | Undecided | GA90 |
| Jim Obradovich | Patriot Rail (Keokuk Junction Railway) | Undecided | GA90 |
| Brad Epperly | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Dustin Miller | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Chris Smith | SMART-Transportation Division | Supporting | GA90 |
| Michael Triplett | Union Pacific Railroad | Undecided | GA90 |