| Robert Weiser | 3M Company and its affiliates | Undecided | GA90 |
| Brad Epperly | AIG-American International Companies | Undecided | GA90 |
| Dustin Miller | AIG-American International Companies | Undecided | GA90 |
| Jeff Smith | Agribusiness Association of Iowa | Supporting | GA90 |
| Maggie Smith-Fitzgerald | Agribusiness Association of Iowa | Supporting | GA90 |
| Matt Fitzgerald | Agribusiness Association of Iowa | Supporting | GA90 |
| David Scott | American Council of Engineering Companies | Supporting | GA90 |
| Mike St. Clair | American Property Casualty Insurance Association (APCIA) | Supporting | GA90 |
| Drew Klein | Americans For Prosperity | Supporting | GA90 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA90 |
| Brad Epperly | Ames Regional Economic Alliance | Undecided | GA90 |
| Dustin Miller | Ames Regional Economic Alliance | Undecided | GA90 |
| Robert Weiser | Annett Holdings | Supporting | GA90 |
| Scott Newhard | Associated General Contractors of Iowa | Supporting | GA90 |
| Robert Weiser | CRST International | Supporting | GA90 |
| Jon Murphy | Casey's General Stores | Supporting | GA90 |
| Tom Cope | Casey's General Stores | Supporting | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Drew Kamp | Council Bluffs Chamber of Commerce | Supporting | GA90 |
| Ryan Sempf | Dubuque Area Chamber of Commerce | Supporting | GA90 |
| John Hirl | FUELIowa (PMCI) | Supporting | GA90 |
| Marc Beltrame | FUELIowa (PMCI) | Supporting | GA90 |
| Patrick Purtill | Faith & Freedom Coalition | Supporting | GA90 |
| Molly Severn | Governor's Office | Supporting | GA90 |
| Andrea Woodard | Greater Des Moines Partnership | Undecided | GA90 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA90 |
| Dustin Miller | Greater Des Moines Partnership | Undecided | GA90 |
| Brad Epperly | Helena Agri-Enterprises, LLC | Supporting | GA90 |
| Dustin Miller | Helena Agri-Enterprises, LLC | Supporting | GA90 |
| Mark Joyce | Hy-Vee, Inc. | Undecided | GA90 |
| Jake Ketzner | Independent Insurance Agents of Iowa | Supporting | GA90 |
| Larry Blixt | Independent Insurance Agents of Iowa | Supporting | GA90 |
| Nick Boeyink | Independent Insurance Agents of Iowa | Supporting | GA90 |
| Thomas O'Meara | Independent Insurance Agents of Iowa | Supporting | GA90 |
| Mike Heller | Iowa Academy of Trial Lawyers | Opposing | GA90 |
| Brad Lint | Iowa Association for Justice | Opposing | GA90 |
| Kellie Paschke | Iowa Association for Justice | Opposing | GA90 |
| Lisa Davis-Cook | Iowa Association for Justice | Opposing | GA90 |
| Troy Skinner | Iowa Association for Justice | Opposing | GA90 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA90 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Undecided | GA90 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | GA90 |
| Mike Heller | Iowa Association of Magistrate Judges | Undecided | GA90 |
| Joe Murphy | Iowa Business Council | Supporting | GA90 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA90 |
| Dustin Miller | Iowa Chamber Alliance | Undecided | GA90 |
| Brad Epperly | Iowa Defense Counsel Association | Undecided | GA90 |
| Dustin Miller | Iowa Defense Counsel Association | Undecided | GA90 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA90 |
| Brad Epperly | Iowa Grocery Industry Association | Undecided | GA90 |
| Dustin Miller | Iowa Grocery Industry Association | Undecided | GA90 |
| Bobby Martens | Iowa Institute for Cooperatives | Supporting | GA90 |
| Mike St. Clair | Iowa Institute for Cooperatives | Supporting | GA90 |
| Rebecca Boyer | Iowa Institute for Cooperatives | Supporting | GA90 |
| Frederick Haskins | Iowa Insurance Associates | Supporting | GA90 |
| BRITTANY LUMLEY | Iowa Insurance Institute | Supporting | GA90 |
| Courtney Craig | Iowa Insurance Institute | Supporting | GA90 |
| Jeffrey Boeyink | Iowa Insurance Institute | Supporting | GA90 |
| Taylor McDonald | Iowa Insurance Institute | Supporting | GA90 |
| David Scott | Iowa Motor Truck Association | Supporting | GA90 |
| John Hirl | Iowa Motor Truck Association | Supporting | GA90 |
| Marc Beltrame | Iowa Motor Truck Association | Supporting | GA90 |
| David Adelman | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA90 |
| Frank Chiodo | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA90 |
| Lillie Brady | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA90 |
| Matt Hinch | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA90 |
| Sara Allen | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA90 |
| Will Rogers | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA90 |
| Ben Nuelle | Iowa Pork Producers Association | Supporting | GA90 |
| Jeff Smith | Iowa Pork Producers Association | Supporting | GA90 |
| Maggie Smith-Fitzgerald | Iowa Pork Producers Association | Supporting | GA90 |
| Matt Fitzgerald | Iowa Pork Producers Association | Supporting | GA90 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA90 |
| Doug Struyk | Iowa State Bar Association | Opposing | GA90 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA90 |
| Jennifer Dorman | Iowa State Bar Association | Opposing | GA90 |
| Jim Carney | Iowa State Bar Association | Undecided | GA90 |
| Jim Carney | Iowa State Bar Association | Opposing | GA90 |
| David Scott | Iowa Water Well Association | Supporting | GA90 |
| David Adelman | Iowa Wholesale Beer Distributors Association | Supporting | GA90 |
| Frank Chiodo | Iowa Wholesale Beer Distributors Association | Supporting | GA90 |
| Lillie Brady | Iowa Wholesale Beer Distributors Association | Supporting | GA90 |
| Matt Hinch | Iowa Wholesale Beer Distributors Association | Supporting | GA90 |
| Sara Allen | Iowa Wholesale Beer Distributors Association | Supporting | GA90 |
| Jake Ketzner | KWIK Trip, Inc. | Supporting | GA90 |
| Larry Blixt | KWIK Trip, Inc. | Supporting | GA90 |
| Matt McKinney | Kum and Go, L.C. | Supporting | GA90 |
| RG Schwarm | Kum and Go, L.C. | Supporting | GA90 |
| John Hall | Marshalltown Area Chamber of Commerce | Undecided | GA90 |
| Ross Lien | National Association of Mutual Insurance Companies (NAMIC) | Supporting | GA90 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA90 |
| Hannah Welch | Nationwide Mutual Ins. Co. | Supporting | GA90 |
| Matt McKinney | Nationwide Mutual Ins. Co. | Supporting | GA90 |
| RG Schwarm | Nationwide Mutual Ins. Co. | Supporting | GA90 |
| Frederick Haskins | Patterson Law Firm LLP | Supporting | GA90 |
| Frederick Haskins | Patterson Law Firm LLP | Undecided | GA90 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Supporting | GA90 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Supporting | GA90 |
| Brad Epperly | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Dustin Miller | Quad Cities Chamber of Commerce | Undecided | GA90 |
| David Scott | Society of Land Surveyors of Iowa | Supporting | GA90 |
| David Adelman | State Farm Insurance | Undecided | GA90 |
| Frank Chiodo | State Farm Insurance | Undecided | GA90 |
| Lillie Brady | State Farm Insurance | Undecided | GA90 |
| Matt Hinch | State Farm Insurance | Undecided | GA90 |
| Sara Allen | State Farm Insurance | Undecided | GA90 |
| Renee Hansen | Sukup Manufacturing | Supporting | GA90 |
| Chip Baltimore | Trial Lawyers 4 Justice | Opposing | GA90 |
| Karl Schilling | United Professionals/UE | Opposing | GA90 |