| Steven Schoenebaum | Dow AgroSciences | Undecided | GA85 |
| Josh Mandelbaum | Environmental Law and Policy Center | Supporting | GA85 |
| Steve Falck | Environmental Law and Policy Center | Supporting | GA85 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA85 |
| Matt Hinch | Greater Des Moines Partnership | Undecided | GA85 |
| Paula Dierenfeld | Greater Des Moines Partnership | Undecided | GA85 |
| Scott Sundstrom | Greater Des Moines Partnership | Undecided | GA85 |
| Kevin Condon | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Kevin Condon | Iowa Association of Business and Industry (ABI) | Opposing | GA85 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Opposing | GA85 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Opposing | GA85 |
| Don Brazelton | Iowa Association of County Conservation Boards | Supporting | GA85 |
| Brad Epperly | Iowa Automobile Dealers Association | Undecided | GA85 |
| Paula Dierenfeld | Iowa Automobile Dealers Association | Undecided | GA85 |
| Scott Sundstrom | Iowa Automobile Dealers Association | Undecided | GA85 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA85 |
| John Stineman | Iowa Chamber Alliance | Undecided | GA85 |
| Paula Dierenfeld | Iowa Chamber Alliance | Undecided | GA85 |
| Scott Sundstrom | Iowa Chamber Alliance | Undecided | GA85 |
| Neila Seaman | Iowa Chapter of Sierra Club | Supporting | GA85 |
| Adam Mason | Iowa Citizens for Community Improvement Action Fund | Supporting | GA85 |
| Jess Mazour | Iowa Citizens for Community Improvement Action Fund | Supporting | GA85 |
| Mike Heller | Iowa Conservation Alliance | Supporting | GA85 |
| Paula Feltner | Iowa Conservation Alliance | Supporting | GA85 |
| Diane Ford | Iowa Dept. of Natural Resources | Undecided | GA85 |
| Jim Obradovich | Iowa Environmental Council | Supporting | GA85 |
| Robert Mulqueen | Iowa Environmental Council | Supporting | GA85 |
| Dane Schumann | Iowa Farmers Union | Supporting | GA85 |
| Kent Hartwig | Iowa Farmers Union | Supporting | GA85 |
| Threase Harms | Iowa Farmers Union | Supporting | GA85 |
| Brad Epperly | Iowa Grocery Industry Association | Undecided | GA85 |
| Paula Dierenfeld | Iowa Grocery Industry Association | Undecided | GA85 |
| Scott Sundstrom | Iowa Grocery Industry Association | Undecided | GA85 |
| Don Brazelton | Iowa Natural Heritage Foundation | Supporting | GA85 |
| Don Brazelton | Iowa Rivers Revival | Supporting | GA85 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA85 |
| Paula Dierenfeld | Iowa Society of Certified Public Accountants | Undecided | GA85 |
| Scott Sundstrom | Iowa Society of Certified Public Accountants | Undecided | GA85 |
| Hanna DeGroot | Iowa State Association of Counties | Supporting | GA85 |
| Kristi Harshbarger | Iowa State Association of Counties | Supporting | GA85 |
| Linda Hinton | Iowa State Association of Counties | Supporting | GA85 |
| Lucas Beenken | Iowa State Association of Counties | Supporting | GA85 |
| William Peterson | Iowa State Association of Counties | Supporting | GA85 |
| William Heckroth | Iowa State Association of County Supervisors | Supporting | GA85 |
| Mark Langgin | Iowa Water and Land Legacy | Supporting | GA85 |
| MIke Delaney | Izaak Walton League - Iowa Division | Supporting | GA85 |
| Marty Ryan | Lead Is Poison Coalition (LIP-C) | Undecided | GA85 |
| Stephanie Fawkes-Lee | Lead Is Poison Coalition (LIP-C) | Undecided | GA85 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA85 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA85 |
| John Pederson | Okoboji Tourism Committee | Undecided | GA85 |
| Matt Eide | Okoboji Tourism Committee | Undecided | GA85 |
| Steven Schoenebaum | Smithfield Foods, Inc. | Undecided | GA85 |
| Steven Schoenebaum | Syngenta Crop Protection | Undecided | GA85 |
| Doug Struyk | The Nature Conservancy | Supporting | GA85 |
| George Appleby | The Nature Conservancy | Supporting | GA85 |
| Jennifer Tyler | The Nature Conservancy | Supporting | GA85 |
| Jim Carney | The Nature Conservancy | Supporting | GA85 |