| Adam Gregg | Agribusiness Assn. of IA | Undecided | GA83 |
| Jerry Fitzgerald | Agribusiness Assn. of IA | Undecided | GA83 |
| Maggie Smith-Fitzgerald | Agribusiness Assn. of IA | Undecided | GA83 |
| Marc Beltrame | Agribusiness Assn. of IA | Undecided | GA83 |
| Mark Joyce | Agribusiness Assn. of IA | Undecided | GA83 |
| Midge Slater | Alliance for Retired Americans | Supporting | GA83 |
| Andrew Baumert | Board of Regents, State of IA | Undecided | GA83 |
| David Miles | Board of Regents, State of IA | Undecided | GA83 |
| Joe Murphy | Board of Regents, State of IA | Undecided | GA83 |
| Keith Saunders | Board of Regents, State of IA | Undecided | GA83 |
| Robert Donley | Board of Regents, State of IA | Undecided | GA83 |
| Carrie Fitzgerald | Child and Family Policy Center | Supporting | GA83 |
| Victor Elias | Child and Family Policy Center | Supporting | GA83 |
| Brad Epperly | Deere & Company | Opposing | GA83 |
| James West | Deere & Company | Opposing | GA83 |
| Jason Francque | Deere & Company | Opposing | GA83 |
| Keith Luchtel | Deere & Company | Opposing | GA83 |
| Paula Dierenfeld | Deere & Company | Opposing | GA83 |
| Scott Sundstrom | Deere & Company | Opposing | GA83 |
| Billi Hunt | Du Pont/ Pioneer | Opposing | GA83 |
| Brad Epperly | Greater Des Moines Partnership | Opposing | GA83 |
| James West | Greater Des Moines Partnership | Opposing | GA83 |
| Keith Luchtel | Greater Des Moines Partnership | Opposing | GA83 |
| Paula Dierenfeld | Greater Des Moines Partnership | Opposing | GA83 |
| Scott Sundstrom | Greater Des Moines Partnership | Opposing | GA83 |
| John Gilliland | IA. Assn. of Business and Industry (ABI) | Opposing | GA83 |
| Michael Ralston | IA. Assn. of Business and Industry (ABI) | Opposing | GA83 |
| Nicole Crain | IA. Assn. of Business and Industry (ABI) | Opposing | GA83 |
| Mike St. Clair | IA. Biotechnology Assn. | Opposing | GA83 |
| Brad Epperly | IA. Chamber Alliance | Opposing | GA83 |
| James West | IA. Chamber Alliance | Opposing | GA83 |
| Keith Luchtel | IA. Chamber Alliance | Opposing | GA83 |
| Paula Dierenfeld | IA. Chamber Alliance | Opposing | GA83 |
| Scott Sundstrom | IA. Chamber Alliance | Opposing | GA83 |
| Diane Foss | IA. Dept. of Economic Development (IDED) | Undecided | GA83 |
| John Pederson | IA. Ethanol Producers Assn. | Undecided | GA83 |
| Matt Eide | IA. Ethanol Producers Assn. | Undecided | GA83 |
| Ted Stopulos | IA. Ethanol Producers Assn. | Undecided | GA83 |
| Don Petersen | IA. Farm Bureau Federation | Undecided | GA83 |
| Joe Johnson | IA. Farm Bureau Federation | Undecided | GA83 |
| Mark Salvador | IA. Farm Bureau Federation | Undecided | GA83 |
| Janice Laue | IA. Federation of Labor, AFL-CIO | Supporting | GA83 |
| Ken Sagar | IA. Federation of Labor, AFL-CIO | Supporting | GA83 |
| Brad Epperly | IA. Society of Certified Public Accountants | Undecided | GA83 |
| James West | IA. Society of Certified Public Accountants | Undecided | GA83 |
| Keith Luchtel | IA. Society of Certified Public Accountants | Undecided | GA83 |
| Paula Dierenfeld | IA. Society of Certified Public Accountants | Undecided | GA83 |
| Scott Sundstrom | IA. Society of Certified Public Accountants | Undecided | GA83 |
| Ed Wallace | IA. Taxpayers Assn. | Opposing | GA83 |
| Ed Wallace | IA. Taxpayers Assn. | Undecided | GA83 |
| David Adelman | Metropolitan Coalition | Undecided | GA83 |
| Brad Epperly | Monsanto Company | Opposing | GA83 |
| James West | Monsanto Company | Opposing | GA83 |
| Keith Luchtel | Monsanto Company | Opposing | GA83 |
| Scott Sundstrom | Monsanto Company | Opposing | GA83 |
| Jen Schulte | Pfizer Inc. c/o Nielsen Merksamer et al | Undecided | GA83 |
| Kent Hartwig | Pfizer Inc. c/o Nielsen Merksamer et al | Undecided | GA83 |
| Kyle Frette | Pfizer Inc. c/o Nielsen Merksamer et al | Undecided | GA83 |
| Threase Harms | Pfizer Inc. c/o Nielsen Merksamer et al | Undecided | GA83 |
| Amy Campbell | Professional Developers of IA (PDI) | Opposing | GA83 |
| Craig Patterson | Professional Developers of IA (PDI) | Opposing | GA83 |
| George Appleby | SSAB (f/k/a IPSCO Steel) | Opposing | GA83 |
| Jennifer Tyler | SSAB (f/k/a IPSCO Steel) | Opposing | GA83 |
| Jim Carney | SSAB (f/k/a IPSCO Steel) | Opposing | GA83 |
| Jerry Fitzgerald | Technology Assn. of IA | Undecided | GA83 |
| Maggie Smith-Fitzgerald | Technology Assn. of IA | Undecided | GA83 |
| Mark Joyce | Technology Assn. of IA | Undecided | GA83 |
| Mike Heller | Waste Management, Inc. | Undecided | GA83 |
| Paula Feltner | Waste Management, Inc. | Undecided | GA83 |