| Drew Kamp | Ames Chamber of Commerce | Undecided | GA86 |
| Jim Obradovich | Coalition for Iowa Woodlands and Trees | Supporting | GA86 |
| Jim Obradovich | Conservation Districts of Iowa | Undecided | GA86 |
| Dane Schumann | Des Moines Water Works | Undecided | GA86 |
| Emily Hockins | Des Moines Water Works | Undecided | GA86 |
| Threase Harms | Des Moines Water Works | Undecided | GA86 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA86 |
| Paula Dierenfeld | Greater Des Moines Partnership | Undecided | GA86 |
| Scott Sundstrom | Greater Des Moines Partnership | Undecided | GA86 |
| Jessica Hyland | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Myron Linn | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Linda Kinman | Iowa Association of Water Agencies | Undecided | GA86 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA86 |
| John Stineman | Iowa Chamber Alliance | Undecided | GA86 |
| Paula Dierenfeld | Iowa Chamber Alliance | Undecided | GA86 |
| Scott Sundstrom | Iowa Chamber Alliance | Undecided | GA86 |
| Neila Seaman | Iowa Chapter of Sierra Club | Undecided | GA86 |
| Doug Struyk | Iowa Drainage District Association | Undecided | GA86 |
| George Appleby | Iowa Drainage District Association | Undecided | GA86 |
| Jennifer Tyler | Iowa Drainage District Association | Undecided | GA86 |
| Jim Carney | Iowa Drainage District Association | Undecided | GA86 |
| John Torbert | Iowa Drainage District Association | Undecided | GA86 |
| Mona Bond | Iowa Drainage District Association | Undecided | GA86 |
| Shannon Henson | Iowa Drainage District Association | Undecided | GA86 |
| Dane Schumann | Iowa Farmers Union | Undecided | GA86 |
| Emily Hockins | Iowa Farmers Union | Undecided | GA86 |
| Threase Harms | Iowa Farmers Union | Undecided | GA86 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA86 |
| Paula Dierenfeld | Iowa Society of Certified Public Accountants | Undecided | GA86 |
| Scott Sundstrom | Iowa Society of Certified Public Accountants | Undecided | GA86 |
| Carol Balvanz | Iowa Soybean Association | Supporting | GA86 |
| Jill Altringer | Iowa Soybean Association | Supporting | GA86 |
| Jennifer Kingland | Iowa Taxpayers Association | Undecided | GA86 |
| Brad Epperly | Monsanto Company | Undecided | GA86 |
| Scott Sundstrom | Monsanto Company | Undecided | GA86 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA86 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA86 |
| Doug Struyk | The Nature Conservancy | Supporting | GA86 |
| Doug Struyk | The Nature Conservancy | Undecided | GA86 |
| George Appleby | The Nature Conservancy | Supporting | GA86 |
| George Appleby | The Nature Conservancy | Undecided | GA86 |
| Jennifer Tyler | The Nature Conservancy | Supporting | GA86 |
| Jennifer Tyler | The Nature Conservancy | Undecided | GA86 |
| Jim Carney | The Nature Conservancy | Supporting | GA86 |
| Jim Carney | The Nature Conservancy | Undecided | GA86 |
| Kristin Aschenbrenner | The Nature Conservancy | Supporting | GA86 |
| Shannon Henson | The Nature Conservancy | Supporting | GA86 |
| Shannon Henson | The Nature Conservancy | Undecided | GA86 |