| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA91 |
| Christopher Rants | Center for Rural Affairs | Supporting | GA91 |
| Cynthia Farmer | Center for Rural Affairs | Supporting | GA91 |
| Jake Friedrichsen | Center for Rural Affairs | Supporting | GA91 |
| Jefferson Fink | Conservation Districts of Iowa | Supporting | GA91 |
| Jim Obradovich | Conservation Districts of Iowa | Supporting | GA91 |
| Josh Mandelbaum | Environmental Law and Policy Center | Undecided | GA91 |
| Matt Ohloff | Environmental Law and Policy Center | Undecided | GA91 |
| Nick Laning | IBEW Iowa State Conference | Supporting | GA91 |
| Threase Harms | IBEW Iowa State Conference | Supporting | GA91 |
| Brian Selinger | ITC Midwest | Supporting | GA91 |
| Brian Selinger | ITC Midwest | Undecided | GA91 |
| Mark Joyce | ITC Midwest | Undecided | GA91 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA91 |
| Casey Nickel | Iowa Association of Electric Cooperatives | Undecided | GA91 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Undecided | GA91 |
| Ethan Hohenadel | Iowa Association of Electric Cooperatives | Undecided | GA91 |
| Haley Moon | Iowa Association of Electric Cooperatives | Undecided | GA91 |
| David Peck | Iowa Association of Municipal Utilities | Undecided | GA91 |
| Marc Beltrame | Iowa Association of Municipal Utilities | Undecided | GA91 |
| Jake Swanson | Iowa Cattlemen's Association | Supporting | GA91 |
| Kelli Wicks | Iowa Cattlemen's Association | Supporting | GA91 |
| Briana Kouma | Iowa Chapter of Sierra Club | Supporting | GA91 |
| Briana Kouma | Iowa Chapter of Sierra Club | Undecided | GA91 |
| Jessica Mazour | Iowa Chapter of Sierra Club | Supporting | GA91 |
| Jessica Mazour | Iowa Chapter of Sierra Club | Undecided | GA91 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Supporting | GA91 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA91 |
| Ian Latham | Iowa Corn Growers Association | Supporting | GA91 |
| Jeff Smith | Iowa Corn Growers Association | Supporting | GA91 |
| Maggie Smith-Fitzgerald | Iowa Corn Growers Association | Supporting | GA91 |
| Matt Fitzgerald | Iowa Corn Growers Association | Supporting | GA91 |
| Nathan Hohnstein | Iowa Corn Growers Association | Supporting | GA91 |
| Haley Hook | Iowa Department of Agriculture & Land Stewardship | Supporting | GA91 |
| John Torbert | Iowa Drainage District Association | Undecided | GA91 |
| Mona Bond | Iowa Drainage District Association | Undecided | GA91 |
| Catherine Pollard | Iowa Environmental Council | Undecided | GA91 |
| Cody Smith | Iowa Environmental Council | Undecided | GA91 |
| Jordan Oster | Iowa Environmental Council | Undecided | GA91 |
| Kerri Johannsen | Iowa Environmental Council | Undecided | GA91 |
| Michael Schmidt | Iowa Environmental Council | Undecided | GA91 |
| Sarah Green | Iowa Environmental Council | Undecided | GA91 |
| Threase Harms | Iowa Environmental Council | Undecided | GA91 |
| Kevin Kuhle | Iowa Farm Bureau Federation | Supporting | GA91 |
| Matt Gronewald | Iowa Farm Bureau Federation | Supporting | GA91 |
| Matthew Steinfeldt | Iowa Farm Bureau Federation | Supporting | GA91 |
| Catherine Pollard | Iowa Farmers Union | Supporting | GA91 |
| Threase Harms | Iowa Farmers Union | Supporting | GA91 |
| Doug Struyk | Iowa Soybean Association | Supporting | GA91 |
| Jennifer Dorman | Iowa Soybean Association | Supporting | GA91 |
| Jim Carney | Iowa Soybean Association | Supporting | GA91 |
| Katie Hall | Iowa Soybean Association | Supporting | GA91 |
| Megan Decker | Iowa Soybean Association | Supporting | GA91 |
| Stephanie Weisenbach | Iowa Utilities Commission | Undecided | GA91 |
| Onnalee Gettler | MidAmerican Energy Company | Supporting | GA91 |
| Onnalee Gettler | MidAmerican Energy Company | Undecided | GA91 |
| Ben Gentz | Missouri River Energy Services | Undecided | GA91 |
| Clair Lewis | Missouri River Energy Services | Undecided | GA91 |
| Kate Walton | Missouri River Energy Services | Undecided | GA91 |
| Matt Eide | Missouri River Energy Services | Undecided | GA91 |
| Doug Struyk | The Nature Conservancy | Undecided | GA91 |
| Emily Kavanagh | The Nature Conservancy | Undecided | GA91 |
| Jennifer Dorman | The Nature Conservancy | Undecided | GA91 |
| Jim Carney | The Nature Conservancy | Undecided | GA91 |
| John Strathman | VALOR Iowa | Supporting | GA91 |