| Brad Epperly | Bayer U.S. LLC | Supporting | GA89 |
| Dustin Miller | Bayer U.S. LLC | Supporting | GA89 |
| Cody Smith | Center for Rural Affairs | Undecided | GA89 |
| Gary Grant | City of Cedar Rapids | Supporting | GA89 |
| Gary Grant | City of Cedar Rapids | Withdrawn | GA89 |
| Gary Grant | City of Cedar Rapids | Undecided | GA89 |
| Larry Murphy | City of Cedar Rapids | Supporting | GA89 |
| Larry Murphy | City of Cedar Rapids | Withdrawn | GA89 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA89 |
| Meghan Malloy | City of Cedar Rapids | Supporting | GA89 |
| Meghan Malloy | City of Cedar Rapids | Withdrawn | GA89 |
| Meghan Malloy | City of Cedar Rapids | Undecided | GA89 |
| Jim Obradovich | Conservation Districts of Iowa | Undecided | GA89 |
| Robert Mulqueen | Conservation Districts of Iowa | Undecided | GA89 |
| Drew Kamp | Council Bluffs Chamber of Commerce | Supporting | GA89 |
| Nick Laning | Des Moines Water Works | Undecided | GA89 |
| Threase Harms | Des Moines Water Works | Undecided | GA89 |
| Ryan Sempf | Dubuque Area Chamber of Commerce | Supporting | GA89 |
| Ryan Sempf | Dubuque Area Chamber of Commerce | Undecided | GA89 |
| Hannah McDowell | Grow Clinton County | Undecided | GA89 |
| Nick Laning | Grow Clinton County | Undecided | GA89 |
| Threase Harms | Grow Clinton County | Undecided | GA89 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| John Davis | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| Alex Cutchey | Iowa Association of Municipal Utilities | Supporting | GA89 |
| Alex Cutchey | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Brad Epperly | Iowa Association of Municipal Utilities | Supporting | GA89 |
| Brad Epperly | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Dustin Miller | Iowa Association of Municipal Utilities | Supporting | GA89 |
| Dustin Miller | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Joe Murphy | Iowa Business Council | Supporting | GA89 |
| Brad Epperly | Iowa Chamber Alliance | Supporting | GA89 |
| Dustin Miller | Iowa Chamber Alliance | Supporting | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA89 |
| Nick Laning | Iowa Emergency Management Association | Supporting | GA89 |
| Nick Laning | Iowa Emergency Management Association | Undecided | GA89 |
| Threase Harms | Iowa Emergency Management Association | Supporting | GA89 |
| Threase Harms | Iowa Emergency Management Association | Undecided | GA89 |
| Angela Davis | Iowa Environmental Council | Undecided | GA89 |
| Blake DeRouchey | Iowa Homeland Security & Emergency Management Div. | Undecided | GA89 |
| Jamie Cashman | Iowa State Association of Counties | Supporting | GA89 |
| Kristi Harshbarger | Iowa State Association of Counties | Supporting | GA89 |
| Lucas Beenken | Iowa State Association of Counties | Supporting | GA89 |
| William Peterson | Iowa State Association of Counties | Supporting | GA89 |
| Jamie Cashman | Iowa State Association of County Supervisors | Supporting | GA89 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Supporting | GA89 |
| Lucas Beenken | Iowa State Association of County Supervisors | Supporting | GA89 |
| William Peterson | Iowa State Association of County Supervisors | Supporting | GA89 |
| BRITTANY LUMLEY | Kent Corporation | Supporting | GA89 |
| Charlotte Eby | Kent Corporation | Supporting | GA89 |
| Jeffrey Boeyink | Kent Corporation | Supporting | GA89 |
| Taylor McDonald | Kent Corporation | Supporting | GA89 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA89 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA89 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA89 |
| David Adelman | Metropolitan Coalition | Undecided | GA89 |
| Frank Chiodo | Metropolitan Coalition | Undecided | GA89 |
| Matt Hinch | Metropolitan Coalition | Undecided | GA89 |
| Sara Allen | Metropolitan Coalition | Undecided | GA89 |
| Emily Piper | Piper Sandler | Supporting | GA89 |
| Amy Campbell | Polk County - Board of Supervisors | Undecided | GA89 |
| Craig Patterson | Polk County - Board of Supervisors | Undecided | GA89 |
| Rachael Anderson | Quad Cities Chamber of Commerce | Supporting | GA89 |
| Gary Grant | Urban County Coalition | Undecided | GA89 |
| Larry Murphy | Urban County Coalition | Undecided | GA89 |
| Meghan Malloy | Urban County Coalition | Undecided | GA89 |
| Brad Epperly | res | Undecided | GA89 |
| Dustin Miller | res | Undecided | GA89 |