| David Scott | American Petroleum Institute | Undecided | GA88 |
| Drew Klein | Americans For Prosperity | Undecided | GA88 |
| Tyler Raygor | Americans For Prosperity | Undecided | GA88 |
| Christopher Riley | Archer Daniels Midland Company | Supporting | GA88 |
| Scott Newhard | Associated General Contractors of Iowa | Undecided | GA88 |
| Jon Murphy | Casey's General Stores | Undecided | GA88 |
| Tom Cope | Casey's General Stores | Undecided | GA88 |
| Gary Grant | City of Cedar Rapids | Undecided | GA88 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA88 |
| Meghan Malloy | City of Cedar Rapids | Undecided | GA88 |
| Tim Reilly | Department of Revenue | Undecided | GA88 |
| Dawn Carlson | FUELIowa (PMCI) | Undecided | GA88 |
| Kellie Paschke | FUELIowa (PMCI) | Undecided | GA88 |
| Troy Skinner | FUELIowa (PMCI) | Undecided | GA88 |
| Doug Struyk | Iowa Biodiesel Board | Supporting | GA88 |
| Jennifer Dorman | Iowa Biodiesel Board | Supporting | GA88 |
| Jim Carney | Iowa Biodiesel Board | Supporting | GA88 |
| Jessica Hyland | Iowa Biotechnology Association | Supporting | GA88 |
| Katie Hall | Iowa Biotechnology Association | Supporting | GA88 |
| Mike St. Clair | Iowa Biotechnology Association | Supporting | GA88 |
| David Scott | Iowa Good Roads Association | Undecided | GA88 |
| Alan Kemp | Iowa League of Cities | Undecided | GA88 |
| Daniel Stalder | Iowa League of Cities | Undecided | GA88 |
| Robert Palmer | Iowa League of Cities | Undecided | GA88 |
| David Scott | Iowa Motor Truck Association | Undecided | GA88 |
| Mike Heller | Iowa Renewable Fuels Association (IRF) | Supporting | GA88 |
| Nathan Hohnstein | Iowa Renewable Fuels Association (IRF) | Supporting | GA88 |
| Paula Feltner | Iowa Renewable Fuels Association (IRF) | Supporting | GA88 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA88 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA88 |
| Katie Graham | Iowa Society of Certified Public Accountants | Undecided | GA88 |
| Paula Dierenfeld | Iowa Society of Certified Public Accountants | Undecided | GA88 |
| Jill Altringer | Iowa Soybean Association | Supporting | GA88 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA88 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA88 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA88 |
| William Peterson | Iowa State Association of Counties | Undecided | GA88 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA88 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA88 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA88 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA88 |
| Jake Ketzner | KWIK Trip, Inc. | Supporting | GA88 |
| Larry Blixt | KWIK Trip, Inc. | Supporting | GA88 |
| Jon Murphy | Koch Companies Public Sector, LLC and Affiliates | Undecided | GA88 |
| Tom Cope | Koch Companies Public Sector, LLC and Affiliates | Undecided | GA88 |
| Matt McKinney | Kum and Go, L.C. | Undecided | GA88 |
| RG Schwarm | Kum and Go, L.C. | Undecided | GA88 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA88 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA88 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA88 |
| Christopher Rants | Magellan Midstream Partners | Undecided | GA88 |
| John Cacciatore | Magellan Midstream Partners | Undecided | GA88 |
| Kate Walton | POET, LLC | Supporting | GA88 |
| Matt Eide | POET, LLC | Supporting | GA88 |
| Mike Heller | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA88 |
| Paula Feltner | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA88 |
| Kent Hartwig | Renewable Energy Group (REG) | Supporting | GA88 |
| Scott Hedderich | Renewable Energy Group (REG) | Supporting | GA88 |
| Bob Rafferty | Truckstops of Iowa | Supporting | GA88 |
| Rachel Ong | Truckstops of Iowa | Supporting | GA88 |
| Gary Grant | Urban County Coalition | Undecided | GA88 |
| Larry Murphy | Urban County Coalition | Undecided | GA88 |
| Meghan Malloy | Urban County Coalition | Undecided | GA88 |