| Scott Newhard | Associated General Contractors of Iowa | Undecided | GA86 |
| Jessica Hyland | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Myron Linn | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Brad Epperly | Iowa Automobile Dealers Association | Undecided | GA86 |
| Paula Dierenfeld | Iowa Automobile Dealers Association | Undecided | GA86 |
| Scott Sundstrom | Iowa Automobile Dealers Association | Undecided | GA86 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Undecided | GA86 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Opposing | GA86 |
| Dustin Miller | Iowa League of Cities | Undecided | GA86 |
| Robert Palmer | Iowa League of Cities | Undecided | GA86 |
| Angela Davis | Iowa Lumber Association | Undecided | GA86 |
| Bill Wimmer | Iowa Lumber Association | Undecided | GA86 |
| David Adelman | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA86 |
| Frank Chiodo | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA86 |
| Matt Hinch | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA86 |
| Will Rogers | Iowa Nebraska Farm Equipment Dealers Association | Supporting | 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 |
| Brad Hudson | Iowa State Education Association | Undecided | GA86 |
| Melissa Peterson | Iowa State Education Association | Undecided | GA86 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA86 |
| Craig Walter | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA86 |
| Brian Johnson | NECA - Iowa (NEC) | Undecided | GA86 |
| Craig Walter | NECA - Iowa (NEC) | Undecided | GA86 |
| Brian Johnson | NextEra Energy | Undecided | GA86 |
| Craig Walter | NextEra Energy | Undecided | GA86 |