| Troy Price | AFSCME Iowa Council 61 | Undecided | GA88 |
| Scott Newhard | Associated General Contractors of Iowa | Supporting | GA88 |
| Jim Obradovich | Boone and Scenic Valley Railroad | Undecided | GA88 |
| Pete McRoberts | Boone and Scenic Valley Railroad | Undecided | GA88 |
| Robert Mulqueen | Boone and Scenic Valley Railroad | Undecided | GA88 |
| Jim Obradovich | Burlington Junction Railway | Undecided | GA88 |
| Pete McRoberts | Burlington Junction Railway | Undecided | GA88 |
| Robert Mulqueen | Burlington Junction Railway | Undecided | GA88 |
| Kate Walton | CN Rail | Undecided | GA88 |
| Matt Eide | CN Rail | Undecided | GA88 |
| Gary Grant | Cedar Rapids Airport | Undecided | GA88 |
| Larry Murphy | Cedar Rapids Airport | Undecided | GA88 |
| Meghan Malloy | Cedar Rapids Airport | Undecided | GA88 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA88 |
| Gary Grant | City of Cedar Rapids | Undecided | GA88 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA88 |
| Meghan Malloy | City of Cedar Rapids | Undecided | GA88 |
| Susan Fenton | Iowa Dept. of Transportation | Supporting | GA88 |
| Jim Obradovich | Iowa Interstate Railroad | Undecided | GA88 |
| Pete McRoberts | Iowa Interstate Railroad | Undecided | GA88 |
| Robert Mulqueen | Iowa Interstate Railroad | Undecided | GA88 |
| Amy Campbell | Iowa Public Transit Association (IPT) | Undecided | GA88 |
| Craig Patterson | Iowa Public Transit Association (IPT) | Undecided | GA88 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA88 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA88 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA88 |
| William Peterson | Iowa State Association of Counties | Undecided | GA88 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA88 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA88 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA88 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA88 |
| Jim Obradovich | Keokuk Junction Railway c/o Pioneer Railcorp | Undecided | GA88 |
| Pete McRoberts | Keokuk Junction Railway c/o Pioneer Railcorp | Undecided | GA88 |
| Robert Mulqueen | Keokuk Junction Railway c/o Pioneer Railcorp | Undecided | 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 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| Jim Obradovich | Progressive Rail Iowa (Iowa Traction RR and Iowa Southern RR) | Undecided | GA88 |
| Pete McRoberts | Progressive Rail Iowa (Iowa Traction RR and Iowa Southern RR) | Undecided | GA88 |
| Robert Mulqueen | Progressive Rail Iowa (Iowa Traction RR and Iowa Southern RR) | Undecided | GA88 |
| Marc Beltrame | Racom Corporation | Undecided | GA88 |
| Amy Campbell | Travel Federation of Iowa | Undecided | GA88 |
| Craig Patterson | Travel Federation of Iowa | Undecided | GA88 |
| Kate Walton | Uber Technologies | Undecided | GA88 |
| Matt Eide | Uber Technologies | Undecided | GA88 |
| Gary Grant | Urban County Coalition | Undecided | GA88 |
| Larry Murphy | Urban County Coalition | Undecided | GA88 |
| Meghan Malloy | Urban County Coalition | Undecided | GA88 |