| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA89 |
| Jim Obradovich | Coalition for Iowa Woodlands and Trees | Undecided | GA89 |
| Robert Mulqueen | Coalition for Iowa Woodlands and Trees | Undecided | GA89 |
| Joseph Buffington | County Planning and Zoning Officials of Iowa | Undecided | GA89 |
| Mike Heller | Iowa Academy of Trial Lawyers | Opposing | GA89 |
| Paula Feltner | Iowa Academy of Trial Lawyers | Opposing | GA89 |
| Brad Lint | Iowa Association for Justice | Opposing | GA89 |
| Lisa Davis-Cook | Iowa Association for Justice | Opposing | GA89 |
| Kellie Paschke | Iowa Cattlemen's Association | Undecided | GA89 |
| Kelly Meyers | Iowa Cattlemen's Association | Undecided | GA89 |
| Logan Murray | Iowa Cattlemen's Association | Undecided | GA89 |
| Troy Skinner | Iowa Cattlemen's Association | Undecided | GA89 |
| Brad Epperly | Iowa Defense Counsel Association | Undecided | GA89 |
| Dustin Miller | Iowa Defense Counsel Association | Undecided | GA89 |
| Colin Tadlock | Iowa Department of Agriculture & Land Stewardship | Supporting | GA89 |
| Colin Tadlock | Iowa Department of Agriculture & Land Stewardship | Undecided | GA89 |
| Angela Davis | Iowa Environmental Council | Undecided | GA89 |
| Hannah McDowell | Iowa Farmers Union | Undecided | GA89 |
| Nick Laning | Iowa Farmers Union | Undecided | GA89 |
| Threase Harms | Iowa Farmers Union | Undecided | GA89 |
| Gary Grant | Iowa Hemp Association | Undecided | GA89 |
| Larry Murphy | Iowa Hemp Association | Undecided | GA89 |
| Meghan Malloy | Iowa Hemp Association | Undecided | GA89 |
| Jim Obradovich | Iowa Honey Producers Association | Supporting | GA89 |
| Robert Mulqueen | Iowa Honey Producers Association | Supporting | GA89 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA89 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA89 |
| Jim Carney | Iowa State Bar Association | Undecided | GA89 |
| Kate Walton | Iowa Wine Growers Association | Undecided | GA89 |
| Matt Eide | Iowa Wine Growers Association | Undecided | GA89 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA89 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA89 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA89 |
| Amy Campbell | Travel Federation of Iowa | Undecided | GA89 |
| Craig Patterson | Travel Federation of Iowa | Undecided | GA89 |
| Gary Grant | Urban County Coalition | Undecided | GA89 |
| Larry Murphy | Urban County Coalition | Undecided | GA89 |
| Meghan Malloy | Urban County Coalition | Undecided | GA89 |