| Mark Joyce | Boyd Gaming-Peninsula Gaming LLC & Dubuque Diamond Jo & Diamond Jo Worth | Supporting | GA88 |
| Ryan Soultz | Boyd Gaming-Peninsula Gaming LLC & Dubuque Diamond Jo & Diamond Jo Worth | Supporting | GA88 |
| Ted Stopulos | Boyd Gaming-Peninsula Gaming LLC & Dubuque Diamond Jo & Diamond Jo Worth | Supporting | GA88 |
| Doug Struyk | Caesars Enterprise Services, LLC. | Undecided | GA88 |
| Jennifer Dorman | Caesars Enterprise Services, LLC. | Undecided | GA88 |
| Jim Carney | Caesars Enterprise Services, LLC. | Undecided | GA88 |
| David Adelman | Elite Casino Resorts, LLC | Undecided | GA88 |
| Frank Chiodo | Elite Casino Resorts, LLC | Undecided | GA88 |
| Matt Hinch | Elite Casino Resorts, LLC | Undecided | GA88 |
| Sara Allen | Elite Casino Resorts, LLC | Undecided | GA88 |
| Doug Struyk | Great River Entertainment | Undecided | GA88 |
| Jennifer Dorman | Great River Entertainment | Undecided | GA88 |
| Jim Carney | Great River Entertainment | Undecided | GA88 |
| Courtney Craig | Horsemen's Benevolent and Protective Association (IHBPA) | Undecided | GA88 |
| Jon Moss | Horsemen's Benevolent and Protective Association (IHBPA) | Undecided | GA88 |
| Robert Weiser | Horsemen's Benevolent and Protective Association (IHBPA) | Undecided | GA88 |
| Brian Carter | Iowa Conference of United Methodist Church | Undecided | GA88 |
| Gary Nims | Iowa Conference of United Methodist Church | Undecided | GA88 |
| Rita Carter | Iowa Conference of United Methodist Church | Undecided | GA88 |
| Sara Throener | Iowa Dept. of Inspections and Appeals | Undecided | GA88 |
| Chandlor Collins | Iowa Dept. of Public Safety | Undecided | GA88 |
| Wes Ehrecke | Iowa Gaming Association | Supporting | GA88 |
| Kate Walton | Iowa Harness Horsemen's Association | Undecided | GA88 |
| Matt Eide | Iowa Harness Horsemen's Association | Undecided | GA88 |
| Gary Grant | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Opposing | GA88 |
| Larry Murphy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Opposing | GA88 |
| Meghan Malloy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Opposing | GA88 |
| Courtney Craig | Iowa Thoroughbred Breeders and Owners Association | Undecided | GA88 |
| Robert Weiser | Iowa Thoroughbred Breeders and Owners Association | Undecided | GA88 |
| Brian Johnson | Iowa West Racing Association | Undecided | GA88 |
| Craig Walter | Iowa West Racing Association | Undecided | GA88 |
| Kate Walton | Iowa West Racing Association | Undecided | GA88 |
| Matt Eide | Iowa West Racing Association | Undecided | GA88 |
| Jeff Smith | National Football League (c/o MultiState Associates Inc.) | Undecided | GA88 |
| Jerry Fitzgerald | National Football League (c/o MultiState Associates Inc.) | Undecided | GA88 |
| Maggie Smith-Fitzgerald | National Football League (c/o MultiState Associates Inc.) | Undecided | GA88 |
| Matt Fitzgerald | National Football League (c/o MultiState Associates Inc.) | Undecided | GA88 |
| Kimberly Haus | Penn National Gaming/Ameristar | Undecided | GA88 |
| Susan Cameron Daemen | Penn National Gaming/Ameristar | Undecided | GA88 |
| Kellie Paschke | Prairie Meadows Racetrack and Casino | Undecided | GA88 |
| Troy Skinner | Prairie Meadows Racetrack and Casino | Undecided | GA88 |
| David Scott | Q Casino | Withdrawn | GA88 |
| David Scott | Q Casino | Undecided | GA88 |
| David Scott | Q Casino | Supporting | GA88 |
| BRITTANY LUMLEY | SCE Partners, LLC | Supporting | GA88 |
| Charlotte Eby | SCE Partners, LLC | Supporting | GA88 |
| Jeffrey Boeyink | SCE Partners, LLC | Supporting | GA88 |
| Taylor McDonald | SCE Partners, LLC | Supporting | GA88 |
| Christopher Rants | State Police Officers Council | Opposing | GA88 |
| John Cacciatore | State Police Officers Council | Opposing | GA88 |
| BRITTANY LUMLEY | Wild Rose Entertainment, LLC | Supporting | GA88 |
| Charlotte Eby | Wild Rose Entertainment, LLC | Supporting | GA88 |
| Jeffrey Boeyink | Wild Rose Entertainment, LLC | Supporting | GA88 |
| Taylor McDonald | Wild Rose Entertainment, LLC | Supporting | GA88 |