| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Jeff Smith | Iowa Corn Growers Association | Supporting | GA90 |
| Maggie Smith-Fitzgerald | Iowa Corn Growers Association | Supporting | GA90 |
| Matt Fitzgerald | Iowa Corn Growers Association | Supporting | GA90 |
| Mindy Poldberg | Iowa Corn Growers Association | Supporting | GA90 |
| Haley Hook | Iowa Department of Agriculture & Land Stewardship | Undecided | GA90 |
| Ben Nuelle | Iowa Pork Producers Association | Supporting | GA90 |
| Jeff Smith | Iowa Pork Producers Association | Supporting | GA90 |
| Maggie Smith-Fitzgerald | Iowa Pork Producers Association | Supporting | GA90 |
| Matt Fitzgerald | Iowa Pork Producers Association | Supporting | GA90 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA90 |
| Casey Nickel | Iowa Society of Certified Public Accountants | Undecided | GA90 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA90 |
| Doug Struyk | Iowa State Bar Association | Supporting | GA90 |
| Jennifer Dorman | Iowa State Bar Association | Supporting | GA90 |
| Jim Carney | Iowa State Bar Association | Supporting | GA90 |
| Jill Altringer | Iowa State Dairy Association | Supporting | GA90 |
| Tom Sands | Iowa Taxpayers Association | Supporting | GA90 |
| Jill Altringer | Iowa Turkey Federation | Supporting | GA90 |
| Andy Conlin | Iowans for Tax Relief | Supporting | GA90 |
| Chris Hagenow | Iowans for Tax Relief | Supporting | GA90 |
| Jake Highfill | Iowans for Tax Relief | Supporting | GA90 |
| Tony Phillips | Iowans for Tax Relief | Supporting | GA90 |
| Sydney Gangestad | The Iowa Academy of Trust and Estate Counsel | Supporting | GA90 |
| Tim Coonan | The Iowa Academy of Trust and Estate Counsel | Supporting | GA90 |