| Daniel Zeno | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA88 |
| Mark Stringer | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | 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 |
| Emma Schmit | Food & Water Watch | Opposing | GA88 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Drew Wynes | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Robert Hartwig | Iowa Bankers Association | Undecided | GA88 |
| Sharon Presnall | Iowa Bankers Association | Undecided | GA88 |
| Kellie Paschke | Iowa Cattlemen's Association | Supporting | GA88 |
| Troy Skinner | Iowa Cattlemen's Association | Supporting | GA88 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA88 |
| Adam Mason | Iowa Citizens for Community Improvement Action Fund | Opposing | GA88 |
| Jeff Smith | Iowa Corn Growers Association | Supporting | GA88 |
| Jerry Fitzgerald | Iowa Corn Growers Association | Supporting | GA88 |
| Maggie Smith-Fitzgerald | Iowa Corn Growers Association | Supporting | GA88 |
| Matt Fitzgerald | Iowa Corn Growers Association | Supporting | GA88 |
| Mindy Poldberg | Iowa Corn Growers Association | Supporting | GA88 |
| Don Petersen | Iowa Farm Bureau Federation | Supporting | GA88 |
| Kevin Kuhle | Iowa Farm Bureau Federation | Supporting | GA88 |
| Matthew Steinfeldt | Iowa Farm Bureau Federation | Supporting | GA88 |
| Dane Schumann | Iowa Farmers Union | Undecided | GA88 |
| Maddie Wilcox | Iowa Farmers Union | Undecided | GA88 |
| Threase Harms | Iowa Farmers Union | Undecided | GA88 |
| Jake Ketzner | Iowa Greenhouse Growers Association | Supporting | GA88 |
| Larry Blixt | Iowa Greenhouse Growers Association | Supporting | GA88 |
| Jim Obradovich | Iowa Honey Producers Association | Supporting | GA88 |
| Robert Mulqueen | Iowa Honey Producers Association | Supporting | GA88 |
| Bobby Martens | Iowa Institute for Cooperatives | Supporting | GA88 |
| Katie Hall | Iowa Institute for Cooperatives | Supporting | GA88 |
| Drew Mogler | Iowa Pork Producers Association | Supporting | GA88 |
| Jeff Smith | Iowa Pork Producers Association | Supporting | GA88 |
| Jerry Fitzgerald | Iowa Pork Producers Association | Supporting | GA88 |
| Maggie Smith-Fitzgerald | Iowa Pork Producers Association | Supporting | GA88 |
| Matt Fitzgerald | Iowa Pork Producers Association | Supporting | GA88 |
| Jill Altringer | Iowa Poultry Association | Supporting | GA88 |
| Matt McKinney | Iowa Select Farms, L.L.P. | Supporting | GA88 |
| RG Schwarm | Iowa Select Farms, L.L.P. | Supporting | GA88 |
| Jill Altringer | Iowa Soybean Association | Supporting | 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 Turkey Federation | Supporting | GA88 |
| Doug Struyk | Iowa Veterinary Medical Association | Undecided | GA88 |
| Jennifer Dorman | Iowa Veterinary Medical Association | Undecided | GA88 |
| Jim Carney | Iowa Veterinary Medical Association | Undecided | GA88 |
| David Matulewicz-Crowley | Mercy For Animals, Inc. | Opposing | GA88 |
| Steven Schoenebaum | Smithfield Foods, Inc. | Supporting | GA88 |