| Jim Obradovich | Coalition for Iowa Woodlands and Trees | Opposing | GA88 |
| Pete McRoberts | Coalition for Iowa Woodlands and Trees | Opposing | GA88 |
| Robert Mulqueen | Coalition for Iowa Woodlands and Trees | Opposing | GA88 |
| Amy Campbell | Iowa Association of County Conservation Boards | Undecided | GA88 |
| Craig Patterson | Iowa Association of County Conservation Boards | Undecided | GA88 |
| Jennifer Kingland | Iowa Association of Realtors | Undecided | GA88 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA88 |
| Jim Obradovich | Iowa Conservation Alliance | Undecided | GA88 |
| Pete McRoberts | Iowa Conservation Alliance | Undecided | GA88 |
| Jim Obradovich | Iowa Coon Hunters Association | Undecided | GA88 |
| Tammie Krausman | Iowa Dept. of Natural Resources | Undecided | GA88 |
| Angela Davis | Iowa Environmental Council | Opposing | GA88 |
| Angela Davis | Iowa Environmental Council | Undecided | GA88 |
| Maddie Wilcox | Iowa Farmers Union | Undecided | GA88 |
| Threase Harms | Iowa Farmers Union | Undecided | GA88 |
| Amy Campbell | Iowa Natural Heritage Foundation | Undecided | GA88 |
| Anna Gray | Iowa Natural Heritage Foundation | Undecided | GA88 |
| Craig Patterson | Iowa Natural Heritage Foundation | Undecided | 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 |
| Mike Heller | Iowa State Association of Assessors | Undecided | GA88 |
| Paula Feltner | Iowa State Association of Assessors | Undecided | 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 |
| Jim Obradovich | Iowa Trappers Association | Undecided | GA88 |
| David Adelman | Iowa Wood Industry Association | Opposing | GA88 |
| Frank Chiodo | Iowa Wood Industry Association | Opposing | GA88 |
| Matt Hinch | Iowa Wood Industry Association | Opposing | GA88 |
| Scott Newhard | Iowa Wood Industry Association | Opposing | GA88 |
| Gary Grant | Linn County Board of Supervisors | Opposing | GA88 |
| Larry Murphy | Linn County Board of Supervisors | Opposing | GA88 |
| Meghan Malloy | Linn County Board of Supervisors | Opposing | GA88 |
| Gary Grant | Midwestern Trading, Inc. | Opposing | GA88 |
| Larry Murphy | Midwestern Trading, Inc. | Opposing | GA88 |
| Meghan Malloy | Midwestern Trading, Inc. | Opposing | GA88 |
| Amber Markham | The Nature Conservancy | Undecided | GA88 |
| Doug Struyk | The Nature Conservancy | Undecided | GA88 |
| Jennifer Dorman | The Nature Conservancy | Undecided | GA88 |
| Jim Carney | The Nature Conservancy | Undecided | GA88 |
| Gary Grant | Urban County Coalition | Undecided | GA88 |
| Larry Murphy | Urban County Coalition | Undecided | GA88 |
| Meghan Malloy | Urban County Coalition | Undecided | GA88 |