| Census Lo-liyong | Electronic Services System | Supporting | GA90 |
| Brad Epperly | Iowa Broadcasters Association | Undecided | GA90 |
| Dustin Miller | Iowa Broadcasters Association | Undecided | GA90 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA90 |
| Kelly Meyers | Iowa County Attorneys Association | Undecided | GA90 |
| Tom Ferguson | Iowa County Attorneys Association | Undecided | GA90 |
| Census Lo-liyong | Iowa County Recorders Association | Supporting | GA90 |
| Megan Clyman | Iowa County Recorders Association | Supporting | GA90 |
| Stacie Herridge | Iowa County Recorders Association | Supporting | GA90 |
| Chelsea Hoye | Iowa Environmental Council | Undecided | GA90 |
| Threase Harms | Iowa Environmental Council | Undecided | GA90 |
| Chelsea Hoye | Iowa Farmers Union | Undecided | GA90 |
| Threase Harms | Iowa Farmers Union | Undecided | GA90 |
| Brad Epperly | Iowa Newspaper Association | Undecided | GA90 |
| Dustin Miller | Iowa Newspaper Association | Undecided | GA90 |
| Mike Heller | Iowa State Association of Assessors | Undecided | GA90 |
| Jamie Cashman | Iowa State Association of Counties | Supporting | GA90 |
| Kristi Harshbarger | Iowa State Association of Counties | Supporting | GA90 |
| Lucas Beenken | Iowa State Association of Counties | Supporting | GA90 |
| William Peterson | Iowa State Association of Counties | Supporting | GA90 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA90 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA90 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA90 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA90 |
| Troy Skinner | Marion County Board of Supervisors | Undecided | GA90 |
| Doug Struyk | RELX Inc. | Undecided | GA90 |
| Jennifer Dorman | RELX Inc. | Undecided | GA90 |
| Jim Carney | RELX Inc. | Undecided | GA90 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |