| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Drew Kamp | Council Bluffs Chamber of Commerce | Undecided | GA90 |
| Mike Rozenboom | Iowa Bankers Association | Undecided | GA90 |
| Sharon Presnall | Iowa Bankers Association | Undecided | GA90 |
| Brad Cranston | Iowa Baptists For Biblical Values | Supporting | GA90 |
| Carolann Jensen | Iowa Board of Regents | Undecided | GA90 |
| Jennifer Harbison | Iowa Board of Regents | Undecided | GA90 |
| Keith Saunders | Iowa Board of Regents | Undecided | GA90 |
| Mary Braun | Iowa Board of Regents | Undecided | GA90 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA90 |
| Dustin Miller | Iowa Chamber Alliance | Undecided | GA90 |
| Larry Murphy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Undecided | GA90 |
| Melissa Peterson | Iowa State Education Association | Undecided | GA90 |
| Morgan Miller | Iowa State Education Association | Undecided | GA90 |
| Russ Trimble | Iowa State Treasurer's Office | Undecided | GA90 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA90 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA90 |
| John Hall | Marshalltown Area Chamber of Commerce | Undecided | GA90 |
| BriAnna Nystrom | Municipal Fire & Police Retirement System of Iowa (MFPRSI) | Undecided | GA90 |
| Carlton Chin | Municipal Fire & Police Retirement System of Iowa (MFPRSI) | Undecided | GA90 |
| Dan Cassady | Municipal Fire & Police Retirement System of Iowa (MFPRSI) | Undecided | GA90 |
| RG Schwarm | Municipal Fire & Police Retirement System of Iowa (MFPRSI) | Undecided | GA90 |
| Dave Daughton | Rural School Advocates of Iowa | Undecided | GA90 |
| Margaret Buckton | Rural School Advocates of Iowa | Undecided | GA90 |
| Dave Daughton | School Administrators of Iowa | Undecided | GA90 |
| Christopher Rants | State Police Officers Council | Undecided | GA90 |
| John Cacciatore | State Police Officers Council | Undecided | GA90 |
| Mark Joyce | Teachers Insurance and Annuity Association (TIAA) | Undecided | GA90 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |
| Margaret Buckton | Urban Education Network of Iowa | Undecided | GA90 |
| Matt Hinch | Voya Financial | Undecided | GA90 |