| Justin Hupfer | Farm Credit Service of America | Undecided | GA91 |
| Mike Rozenboom | Iowa Bankers Association | Undecided | GA91 |
| Sharon Presnall | Iowa Bankers Association | Undecided | GA91 |
| Jake Swanson | Iowa Cattlemen's Association | Supporting | GA91 |
| Kelli Wicks | Iowa Cattlemen's Association | Supporting | GA91 |
| Emily Callison | Iowa Corn Growers Association | Supporting | GA91 |
| Jeff Smith | Iowa Corn Growers Association | Supporting | GA91 |
| Kevin Studer | Iowa Corn Growers Association | Supporting | GA91 |
| Maggie Smith-Fitzgerald | Iowa Corn Growers Association | Supporting | GA91 |
| Matt Fitzgerald | Iowa Corn Growers Association | Supporting | GA91 |
| Noah Hackbart | Iowa Farmers Union | Undecided | GA91 |
| Threase Harms | Iowa Farmers Union | Undecided | GA91 |
| Ben Nuelle | Iowa Pork Producers Association | Supporting | GA91 |
| Jeff Smith | Iowa Pork Producers Association | Supporting | GA91 |
| Maggie Smith-Fitzgerald | Iowa Pork Producers Association | Supporting | GA91 |
| Matt Fitzgerald | Iowa Pork Producers Association | Supporting | GA91 |
| Matt McKinney | Iowa Select Farms, L.L.P. | Supporting | GA91 |
| RG Schwarm | Iowa Select Farms, L.L.P. | Supporting | GA91 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA91 |
| Casey Nickel | Iowa Society of Certified Public Accountants | Undecided | GA91 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA91 |
| Clara Wulfsen | Iowa Soybean Association | Supporting | GA91 |
| Doug Struyk | Iowa Soybean Association | Supporting | GA91 |
| Jennifer Dorman | Iowa Soybean Association | Supporting | GA91 |
| Jim Carney | Iowa Soybean Association | Supporting | GA91 |
| Katie Hall | Iowa Soybean Association | Supporting | GA91 |
| Megan Decker | Iowa Soybean Association | Supporting | GA91 |
| Clara Wulfsen | Iowa State Bar Association | Supporting | GA91 |
| Doug Struyk | Iowa State Bar Association | Supporting | GA91 |
| Jennifer Dorman | Iowa State Bar Association | Supporting | GA91 |
| Jim Carney | Iowa State Bar Association | Supporting | GA91 |
| Andy Conlin | Iowans for Tax Relief | Supporting | GA91 |
| Chris Hagenow | Iowans for Tax Relief | Supporting | GA91 |
| Jake Highfill | Iowans for Tax Relief | Supporting | GA91 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA91 |
| Jacob Schrader | The Iowa Academy of Trust and Estate Counsel | Supporting | GA91 |
| Logan Murray | The Iowa Academy of Trust and Estate Counsel | Supporting | GA91 |