| Daniel Zeno | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA88 |
| Mark Stringer | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA88 |
| Rita Bettis Austen | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA88 |
| Jim Obradovich | Coalition for Iowa Woodlands and Trees | Undecided | GA88 |
| Robert Mulqueen | Coalition for Iowa Woodlands and Trees | Undecided | GA88 |
| Emma Schmit | Food & Water Watch | Opposing | GA88 |
| John Aspray | Food & Water Watch | Opposing | GA88 |
| Mackenzie Aime | Food & Water Watch | Opposing | GA88 |
| Kellie Paschke | Iowa Cattlemen's Association | Supporting | GA88 |
| Kellie Paschke | Iowa Cattlemen's Association | Undecided | GA88 |
| Troy Skinner | Iowa Cattlemen's Association | Supporting | GA88 |
| Troy Skinner | Iowa Cattlemen's Association | Undecided | GA88 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA88 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA88 |
| Adam Mason | Iowa Citizens for Community Improvement Action Fund | Opposing | GA88 |
| Brian Carter | Iowa Conference of United Methodist Church | Opposing | GA88 |
| Carolyn Uhlenhake-Walker | Iowa Conference of United Methodist Church | Opposing | GA88 |
| Gary Nims | Iowa Conference of United Methodist Church | Opposing | GA88 |
| Rita Carter | Iowa Conference of United Methodist Church | Opposing | GA88 |
| Roberta Paige | Iowa Conference of United Methodist Church | Opposing | GA88 |
| Kelly Meyers | Iowa County Attorneys Association | Undecided | GA88 |
| Susan Cameron Daemen | Iowa County Attorneys Association | Undecided | GA88 |
| Maison Bleam | Iowa Department of Agriculture & Land Stewardship | Undecided | GA88 |
| Angela Davis | Iowa Environmental Council | Opposing | GA88 |
| Maddie Wilcox | Iowa Farmers Union | Undecided | GA88 |
| Threase Harms | Iowa Farmers Union | Undecided | GA88 |
| Jim Obradovich | Iowa Honey Producers Association | Supporting | GA88 |
| Pete McRoberts | Iowa Honey Producers Association | Supporting | GA88 |
| Robert Mulqueen | Iowa Honey Producers Association | Supporting | GA88 |
| Jill Altringer | Iowa Poultry Association | Undecided | GA88 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA88 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA88 |
| Jim Carney | Iowa State Bar Association | Undecided | GA88 |
| Jill Altringer | Iowa State Dairy Association | Undecided | GA88 |
| Kate Walton | Tyson Foods, Inc. | Undecided | GA88 |
| Matt Eide | Tyson Foods, Inc. | Undecided | GA88 |