| Drew Kamp | Ames Chamber of Commerce | Undecided | GA86 |
| Jerry Fitzgerald | City of Des Moines | Supporting | GA86 |
| Maggie Smith-Fitzgerald | City of Des Moines | Supporting | GA86 |
| Matt Fitzgerald | City of Des Moines | Supporting | GA86 |
| Katherine Carlucci | City of Iowa City | Supporting | GA86 |
| Thomas Stanberry | City of Iowa City | Supporting | GA86 |
| Mary Earnhardt | City of Waukee | Supporting | GA86 |
| Brice Oakley | City of West Des Moines | Supporting | GA86 |
| Don Avenson | City of West Des Moines | Supporting | GA86 |
| Tom Cope | City of West Des Moines | Supporting | GA86 |
| Andrea Woodard | Greater Des Moines Partnership | Supporting | GA86 |
| Brad Epperly | Greater Des Moines Partnership | Supporting | GA86 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA86 |
| Joseph Jones | Greater Des Moines Partnership | Supporting | GA86 |
| Paula Dierenfeld | Greater Des Moines Partnership | Supporting | GA86 |
| Paula Dierenfeld | Greater Des Moines Partnership | Undecided | GA86 |
| Scott Sundstrom | Greater Des Moines Partnership | Supporting | GA86 |
| Scott Sundstrom | Greater Des Moines Partnership | Undecided | GA86 |
| Angela Davis | Hy-Vee, Inc. | Undecided | GA86 |
| Bill Wimmer | Hy-Vee, Inc. | Undecided | GA86 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Opposing | GA86 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Opposing | GA86 |
| Rachel Geilenfeld | Iowa Association of Business and Industry (ABI) | Opposing | GA86 |
| Zach Dalluge | Iowa Association of Business and Industry (ABI) | Opposing | GA86 |
| Jennifer Kingland | Iowa Association of Realtors | Opposing | 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 |
| Brad Epperly | Iowa Grocery Industry Association | Undecided | GA86 |
| Paula Dierenfeld | Iowa Grocery Industry Association | Undecided | GA86 |
| Scott Sundstrom | Iowa Grocery Industry Association | Undecided | GA86 |
| Dustin Miller | Iowa League of Cities | Opposing | GA86 |
| Robert Palmer | Iowa League of Cities | Opposing | GA86 |
| Robert Palmer | Iowa League of Cities | Withdrawn | GA86 |
| Jim Henter | Iowa Retail Federation | Opposing | 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 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA86 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA86 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA86 |
| William Peterson | Iowa State Association of Counties | Undecided | GA86 |
| William Heckroth | Iowa State Association of County Supervisors | Undecided | GA86 |
| Jennifer Kingland | Iowa Taxpayers Association | Undecided | GA86 |
| Ernie Adkison | Iowans for Tax Relief | Opposing | GA86 |
| Robert Solt | Iowans for Tax Relief | Opposing | GA86 |
| David Adelman | Metropolitan Coalition | Supporting | GA86 |
| David Adelman | Metropolitan Coalition | Undecided | GA86 |
| Kristin Failor | National Federation of Independent Business (NFIB /IA) | Opposing | GA86 |
| Brian Johnson | Polk County - Board of Supervisors | Undecided | GA86 |