| Drew Kamp | Ames Chamber of Commerce | Supporting | GA86 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Supporting | GA86 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Withdrawn | GA86 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA86 |
| Gary Grant | City of Cedar Rapids | Undecided | GA86 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA86 |
| Meghan Malloy | City of Cedar Rapids | Undecided | GA86 |
| Phil Tuning | Deere & Company | Supporting | GA86 |
| Jeffrey Boeyink | Des Moines Golf and Country Club | Supporting | GA86 |
| Susan Fenton | Des Moines Golf and Country Club | Supporting | GA86 |
| Andrea Woodard | Greater Des Moines Partnership | Supporting | GA86 |
| Brad Epperly | Greater Des Moines Partnership | Supporting | GA86 |
| Joseph Jones | Greater Des Moines Partnership | Supporting | GA86 |
| Paula Dierenfeld | Greater Des Moines Partnership | Supporting | GA86 |
| Scott Sundstrom | Greater Des Moines Partnership | Supporting | GA86 |
| Jessica Hyland | Iowa Association of Business and Industry (ABI) | Supporting | GA86 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA86 |
| Myron Linn | Iowa Association of Business and Industry (ABI) | Supporting | GA86 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA86 |
| Brad Epperly | Iowa Chamber Alliance | Supporting | GA86 |
| John Stineman | Iowa Chamber Alliance | Supporting | GA86 |
| Paula Dierenfeld | Iowa Chamber Alliance | Supporting | GA86 |
| Scott Sundstrom | Iowa Chamber Alliance | Supporting | GA86 |
| Neila Seaman | Iowa Chapter of Sierra Club | Opposing | GA86 |
| Brice Oakley | Iowa Chapter, American Society of Landscape Architects | Supporting | GA86 |
| Don Avenson | Iowa Chapter, American Society of Landscape Architects | Supporting | GA86 |
| Tom Cope | Iowa Chapter, American Society of Landscape Architects | Supporting | GA86 |
| Mike Heller | Iowa Conservation Alliance | Undecided | GA86 |
| Paula Feltner | Iowa Conservation Alliance | Undecided | GA86 |
| Chris Kramer | Iowa Dept. of Cultural Affairs | Undecided | GA86 |
| Tammie Krausman | Iowa Dept. of Natural Resources | Undecided | GA86 |
| Jennifer Klein | Iowa Economic Development Authority | Undecided | GA86 |
| Kristin Hanks-Bents | Iowa Economic Development Authority | Undecided | GA86 |
| Don Petersen | Iowa Farm Bureau Federation | Undecided | GA86 |
| Marty Schwager | Iowa Farm Bureau Federation | Undecided | GA86 |
| Matthew Steinfeldt | Iowa Farm Bureau Federation | Undecided | GA86 |
| Susan Fenton | Iowa Great Lakes Association | Supporting | GA86 |
| Dustin Miller | Iowa League of Cities | Supporting | GA86 |
| Robert Palmer | Iowa League of Cities | Supporting | GA86 |
| Jeffrey Boeyink | Iowa Speedway, LLC | Supporting | GA86 |
| Larry Blixt | Iowa Speedway, LLC | Supporting | GA86 |
| Mark Joyce | Iowa Speedway, LLC | Supporting | GA86 |
| Adam Phillips | Iowa State Treasurer's Office | Undecided | GA86 |
| Adam Phillips | Iowa State Treasurer's Office | Withdrawn | GA86 |
| Adam Phillips | Iowa State Treasurer's Office | Opposing | GA86 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA86 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA86 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA86 |
| David Adelman | Metropolitan Coalition | Supporting | GA86 |
| Frank Chiodo | Metropolitan Coalition | Supporting | GA86 |
| Matt Hinch | Metropolitan Coalition | Supporting | GA86 |
| Brian Johnson | Polk County - Board of Supervisors | Undecided | GA86 |
| David Adelman | Team Iowa | Supporting | GA86 |
| Frank Chiodo | Team Iowa | Supporting | GA86 |
| Matt Hinch | Team Iowa | Supporting | GA86 |
| Mark Joyce | Technology Association of Iowa | Supporting | GA86 |
| Amy Campbell | Travel Federation of Iowa | Supporting | GA86 |
| Craig Patterson | Travel Federation of Iowa | Supporting | GA86 |