| Jon Murphy | Casey's General Stores | Supporting | GA89 |
| Tom Cope | Casey's General Stores | Supporting | GA89 |
| Josh Mandelbaum | Environmental Law and Policy Center | Undecided | GA89 |
| Steve Falck | Environmental Law and Policy Center | Undecided | GA89 |
| Marc Beltrame | FUELIowa (PMCI) | Opposing | GA89 |
| James Kersten | Iowa Central Community College | Supporting | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA89 |
| Colin Tadlock | Iowa Department of Agriculture & Land Stewardship | Supporting | GA89 |
| Tammie Krausman | Iowa Dept. of Natural Resources | Undecided | GA89 |
| Angela Davis | Iowa Environmental Council | Undecided | GA89 |
| Bobby Martens | Iowa Institute for Cooperatives | Undecided | GA89 |
| Katie Hall | Iowa Institute for Cooperatives | Undecided | GA89 |
| Mike St. Clair | Iowa Institute for Cooperatives | Undecided | GA89 |
| Sydney Gangestad | Iowa Propane Gas Association | Undecided | GA89 |
| Tim Coonan | Iowa Propane Gas Association | Undecided | GA89 |
| Mike Heller | Iowa Renewable Fuels Association (IRF) | Undecided | GA89 |
| Nathan Hohnstein | Iowa Renewable Fuels Association (IRF) | Undecided | GA89 |
| Paula Feltner | Iowa Renewable Fuels Association (IRF) | Undecided | GA89 |
| Jake Ketzner | KWIK Trip, Inc. | Undecided | GA89 |
| Larry Blixt | KWIK Trip, Inc. | Undecided | GA89 |
| Matt McKinney | Kum and Go, L.C. | Undecided | GA89 |
| RG Schwarm | Kum and Go, L.C. | Undecided | GA89 |
| Onnalee Gettler | MidAmerican Energy Company | Undecided | GA89 |
| Kate Walton | POET, LLC | Undecided | GA89 |
| Matt Eide | POET, LLC | Undecided | GA89 |
| Mike Heller | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA89 |
| Paula Feltner | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA89 |
| Bob Rafferty | Truckstops of Iowa | Undecided | GA89 |
| Nick Laning | Truckstops of Iowa | Undecided | GA89 |
| Rachel Ong | Truckstops of Iowa | Undecided | GA89 |