| Drew Kamp | Ames Chamber of Commerce | Undecided | GA88 |
| Keith Saunders | Board of Regents, State of Iowa | Undecided | GA88 |
| Kristin Bauer | Board of Regents, State of Iowa | Undecided | GA88 |
| Mark Braun | Board of Regents, State of Iowa | Undecided | GA88 |
| Mary Braun | Board of Regents, State of Iowa | Undecided | GA88 |
| Jim Obradovich | Conservation Districts of Iowa | Supporting | GA88 |
| Dane Schumann | Des Moines Water Works | Undecided | GA88 |
| Maddie Wilcox | Des Moines Water Works | Undecided | GA88 |
| Threase Harms | Des Moines Water Works | Undecided | GA88 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA88 |
| Dustin Miller | Greater Des Moines Partnership | Undecided | GA88 |
| Katie Graham | Greater Des Moines Partnership | Undecided | GA88 |
| Paula Dierenfeld | Greater Des Moines Partnership | Undecided | GA88 |
| Kellie Paschke | Iowa Cattlemen's Association | Undecided | GA88 |
| Troy Skinner | Iowa Cattlemen's Association | Undecided | GA88 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA88 |
| Dustin Miller | Iowa Chamber Alliance | Undecided | GA88 |
| Katie Graham | Iowa Chamber Alliance | Undecided | GA88 |
| Paula Dierenfeld | Iowa Chamber Alliance | Undecided | GA88 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Supporting | GA88 |
| Mike Heller | Iowa Conservation Alliance | Undecided | GA88 |
| Paula Feltner | Iowa Conservation Alliance | Undecided | GA88 |
| Dane Schumann | Iowa Environmental Council | Supporting | GA88 |
| Maddie Wilcox | Iowa Environmental Council | Supporting | GA88 |
| Threase Harms | Iowa Environmental Council | Supporting | GA88 |
| Dane Schumann | Iowa Farmers Union | Supporting | GA88 |
| Maddie Wilcox | Iowa Farmers Union | Supporting | GA88 |
| Threase Harms | Iowa Farmers Union | Supporting | GA88 |
| Alan Kemp | Iowa League of Cities | Undecided | GA88 |
| Daniel Stalder | Iowa League of Cities | Undecided | GA88 |
| Robert Palmer | Iowa League of Cities | Undecided | GA88 |
| Dane Schumann | Iowa Rivers Revival | Undecided | GA88 |
| Maddie Wilcox | Iowa Rivers Revival | Undecided | GA88 |
| Threase Harms | Iowa Rivers Revival | Undecided | GA88 |
| Emily Piper | Iowa Rural Water Association | Supporting | GA88 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA88 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA88 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA88 |
| William Peterson | Iowa State Association of Counties | Undecided | GA88 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA88 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA88 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA88 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA88 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA88 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA88 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA88 |
| Emily Piper | Rathbun Regional Water Association | Supporting | GA88 |
| Doug Struyk | The Nature Conservancy | Undecided | GA88 |
| Jennifer Dorman | The Nature Conservancy | Undecided | GA88 |
| Jim Carney | The Nature Conservancy | Undecided | GA88 |
| Gary Grant | Urban County Coalition | Undecided | GA88 |
| Larry Murphy | Urban County Coalition | Undecided | GA88 |
| Meghan Malloy | Urban County Coalition | Undecided | GA88 |
| Brad Epperly | res | Undecided | GA88 |
| Dustin Miller | res | Undecided | GA88 |
| Katie Graham | res | Undecided | GA88 |
| Paula Dierenfeld | res | Undecided | GA88 |