| Amy Campbell | AARP Iowa | Undecided | GA88 |
| Brad Anderson | AARP Iowa | Undecided | GA88 |
| Craig Patterson | AARP Iowa | Undecided | GA88 |
| Morgan Miller | AFSCME Iowa Council 61 | Opposing | GA88 |
| Morgan Miller | AFSCME Iowa Council 61 | Undecided | GA88 |
| Doug Struyk | Accountants Association of Iowa | Undecided | GA88 |
| Jennifer Dorman | Accountants Association of Iowa | Undecided | GA88 |
| Jim Carney | Accountants Association of Iowa | Undecided | GA88 |
| Emily Piper | American Association of Marriage and Family Therapy | Undecided | GA88 |
| David Scott | American Council of Engineering Companies | Undecided | GA88 |
| Bob Rafferty | American Legion of Iowa | Undecided | GA88 |
| Maddie Wilcox | American Legion of Iowa | Undecided | GA88 |
| Robert Szalay | American Legion of Iowa | Undecided | GA88 |
| Threase Harms | American Legion of Iowa | Undecided | GA88 |
| Maddie Wilcox | American Massage Therapy Association (AMTA) | Supporting | GA88 |
| Maddie Wilcox | American Massage Therapy Association (AMTA) | Undecided | GA88 |
| Rachel Ong | American Massage Therapy Association (AMTA) | Supporting | GA88 |
| Rachel Ong | American Massage Therapy Association (AMTA) | Undecided | GA88 |
| Threase Harms | American Massage Therapy Association (AMTA) | Supporting | GA88 |
| Threase Harms | American Massage Therapy Association (AMTA) | Undecided | GA88 |
| David Scott | American Water Works Association | Undecided | GA88 |
| Drew Klein | Americans For Prosperity | Supporting | GA88 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA88 |
| Sandra Conlin | Associated Builders & Contractors of Iowa | Supporting | GA88 |
| Carolann Jensen | Board of Regents, State of Iowa | Undecided | GA88 |
| Jennifer Harbison | Board of Regents, State of Iowa | Undecided | GA88 |
| Keith Saunders | Board of Regents, State of Iowa | Undecided | GA88 |
| Mary Braun | Board of Regents, State of Iowa | Undecided | GA88 |
| Karla Fultz McHenry | Delta Dental of Iowa | Undecided | GA88 |
| Lynh Patterson | Delta Dental of Iowa | Undecided | GA88 |
| Maddie Wilcox | Des Moines University | Supporting | GA88 |
| Maddie Wilcox | Des Moines University | Undecided | GA88 |
| Threase Harms | Des Moines University | Supporting | GA88 |
| Threase Harms | Des Moines University | Undecided | GA88 |
| Jay Iverson | Home Builders Association of Iowa | Supporting | GA88 |
| Maddie Wilcox | IBEW Iowa State Conference | Opposing | GA88 |
| Maddie Wilcox | IBEW Iowa State Conference | Undecided | GA88 |
| Threase Harms | IBEW Iowa State Conference | Opposing | GA88 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA88 |
| Michael McCarthy | Iowa Alliance For Retired Americans | Opposing | GA88 |
| Brad Epperly | Iowa Association of Ambulatory Surgery Centers | Undecided | GA88 |
| Dustin Miller | Iowa Association of Ambulatory Surgery Centers | Undecided | GA88 |
| Katie Graham | Iowa Association of Ambulatory Surgery Centers | Undecided | GA88 |
| Paula Dierenfeld | Iowa Association of Ambulatory Surgery Centers | Undecided | GA88 |
| Amy Campbell | Iowa Association of Area Agencies on Aging | Undecided | GA88 |
| Craig Patterson | Iowa Association of Area Agencies on Aging | Undecided | GA88 |
| Kelly Meyers | Iowa Association of Behavior Analysis | Undecided | GA88 |
| Susan Cameron Daemen | Iowa Association of Behavior Analysis | Undecided | GA88 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA88 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| John Davis | Iowa Association of Business and Industry (ABI) | Undecided | GA88 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA88 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA88 |
| Julie Smith | Iowa Association of Community Providers | Undecided | GA88 |
| Shelly Chandler | Iowa Association of Community Providers | Undecided | GA88 |
| Amy Campbell | Iowa Association of County Conservation Boards | Undecided | GA88 |
| Craig Patterson | Iowa Association of County Conservation Boards | Undecided | GA88 |
| Doug Struyk | Iowa Association of Nurse Anesthetists | Undecided | GA88 |
| Jennifer Dorman | Iowa Association of Nurse Anesthetists | Undecided | GA88 |
| Jim Carney | Iowa Association of Nurse Anesthetists | Undecided | GA88 |
| Jennifer Kingland | Iowa Association of Realtors | Undecided | GA88 |
| Amy Campbell | Iowa Association of Rural Health Clinics | Undecided | GA88 |
| Craig Patterson | Iowa Association of Rural Health Clinics | Undecided | GA88 |
| Emily Piper | Iowa Association of School Boards | Undecided | GA88 |
| Phil Jeneary | Iowa Association of School Boards | Undecided | GA88 |
| Doug Struyk | Iowa Athletic Trainers Society | Undecided | GA88 |
| Jennifer Dorman | Iowa Athletic Trainers Society | Undecided | GA88 |
| Jim Carney | Iowa Athletic Trainers Society | Undecided | GA88 |
| Jenica Lensmeyer | Iowa Bankers Association | Supporting | GA88 |
| Mike Rozenboom | Iowa Bankers Association | Supporting | GA88 |
| Robert Hartwig | Iowa Bankers Association | Supporting | GA88 |
| Sharon Presnall | Iowa Bankers Association | Supporting | GA88 |
| Amy Campbell | Iowa Behavioral Health Association (IBHA) | Undecided | GA88 |
| Craig Patterson | Iowa Behavioral Health Association (IBHA) | Undecided | GA88 |
| Kent Nebel | Iowa Board of Medicine | Undecided | GA88 |
| Kathy Weinberg | Iowa Board of Nursing | Undecided | GA88 |
| James Kersten | Iowa Central Community College | Undecided | GA88 |
| Kelly Meyers | Iowa Chapter of the National Association of Pediatric Nurse Practitioners | Undecided | GA88 |
| Susan Cameron Daemen | Iowa Chapter of the National Association of Pediatric Nurse Practitioners | Undecided | GA88 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Dustin Miller | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Katie Graham | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Jon Murphy | Iowa Chapter, American Society of Landscape Architects | Undecided | GA88 |
| Tom Cope | Iowa Chapter, American Society of Landscape Architects | Undecided | GA88 |
| Laura Hessburg | Iowa Coalition Against Domestic Violence | Undecided | GA88 |
| Maddie Wilcox | Iowa Cosmetology School Association | Supporting | GA88 |
| Maddie Wilcox | Iowa Cosmetology School Association | Undecided | GA88 |
| Rachel Ong | Iowa Cosmetology School Association | Supporting | GA88 |
| Rachel Ong | Iowa Cosmetology School Association | Undecided | GA88 |
| Threase Harms | Iowa Cosmetology School Association | Supporting | GA88 |
| Threase Harms | Iowa Cosmetology School Association | Undecided | GA88 |
| Brad Epperly | Iowa Defense Counsel Association | Undecided | GA88 |
| Dustin Miller | Iowa Defense Counsel Association | Undecided | GA88 |
| Paula Dierenfeld | Iowa Defense Counsel Association | Undecided | GA88 |
| Jill Stuecker | Iowa Dental Board | Undecided | GA88 |
| Amy McCoy | Iowa Dept. of Public Health | Undecided | GA88 |
| David Scott | Iowa Engineering Society | Undecided | GA88 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Opposing | GA88 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Undecided | GA88 |
| Julianne Frosolone | Iowa Federation of Labor, AFL-CIO | Opposing | GA88 |
| Julianne Frosolone | Iowa Federation of Labor, AFL-CIO | Withdrawn | GA88 |
| Julianne Frosolone | Iowa Federation of Labor, AFL-CIO | Undecided | GA88 |
| Brad Epperly | Iowa Geothermal Association | Undecided | GA88 |
| Dustin Miller | Iowa Geothermal Association | Undecided | GA88 |
| Katie Graham | Iowa Geothermal Association | Undecided | GA88 |
| Paula Dierenfeld | Iowa Geothermal Association | Undecided | GA88 |
| Kelly Meyers | Iowa Hearing Association | Undecided | GA88 |
| Susan Cameron Daemen | Iowa Hearing Association | Undecided | GA88 |
| Karla Fultz McHenry | Iowa Independent Physician Group | Undecided | GA88 |
| Amy Campbell | Iowa Library Association (ILA) | Undecided | GA88 |
| Craig Patterson | Iowa Library Association (ILA) | Undecided | GA88 |
| Kate Walton | Iowa Medical Group Management Association | Undecided | GA88 |
| Matt Eide | Iowa Medical Group Management Association | Undecided | GA88 |
| Renee Schulte | Iowa Mental Health Counselors Association | Undecided | GA88 |
| Kelly Meyers | Iowa Nurse Practitioners Society | Undecided | GA88 |
| Susan Cameron Daemen | Iowa Nurse Practitioners Society | Undecided | GA88 |
| Maddie Wilcox | Iowa Occupational Therapy Association | Undecided | GA88 |
| Threase Harms | Iowa Occupational Therapy Association | Undecided | GA88 |
| Gary Ellis | Iowa Optometric Association | Undecided | GA88 |
| Kelly Meyers | Iowa Optometric Association | Undecided | GA88 |
| Susan Cameron Daemen | Iowa Optometric Association | Undecided | GA88 |
| Casey Ficek | Iowa Pharmacy Association | Undecided | GA88 |
| Kate Walton | Iowa Pharmacy Association | Undecided | GA88 |
| Matt Eide | Iowa Pharmacy Association | Undecided | GA88 |
| Kate Walton | Iowa Physical Therapy Association | Undecided | GA88 |
| Matt Eide | Iowa Physical Therapy Association | Undecided | GA88 |
| Sydney Gangestad | Iowa Physician Assistant Society | Undecided | GA88 |
| Tim Coonan | Iowa Physician Assistant Society | Undecided | GA88 |
| Katie Hall | Iowa Podiatric Medical Society | Undecided | GA88 |
| Mike St. Clair | Iowa Podiatric Medical Society | Undecided | GA88 |
| Christopher Rants | Iowa Prosthetics, Orthotics, Pedorthotics Association | Undecided | GA88 |
| John Cacciatore | Iowa Prosthetics, Orthotics, Pedorthotics Association | Undecided | GA88 |
| Emily Piper | Iowa Psychiatric Society | Supporting | GA88 |
| Amy Campbell | Iowa Psychological Association | Undecided | GA88 |
| Craig Patterson | Iowa Psychological Association | Undecided | GA88 |
| Amy Campbell | Iowa Public Transit Association (IPT) | Undecided | GA88 |
| Craig Patterson | Iowa Public Transit Association (IPT) | Undecided | GA88 |
| Emily Piper | Iowa Rural Water Association | Supporting | GA88 |
| Maddie Wilcox | Iowa Sleep Society | Supporting | GA88 |
| Maddie Wilcox | Iowa Sleep Society | Undecided | GA88 |
| Threase Harms | Iowa Sleep Society | Supporting | GA88 |
| Threase Harms | Iowa Sleep Society | Undecided | GA88 |
| Kate Walton | Iowa Society for Respiratory Care | Undecided | GA88 |
| Matt Eide | Iowa Society for Respiratory Care | 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 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA88 |
| Doug Struyk | Iowa State Bar Association | Supporting | GA88 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA88 |
| Jennifer Dorman | Iowa State Bar Association | Supporting | GA88 |
| Jim Carney | Iowa State Bar Association | Undecided | GA88 |
| Jim Carney | Iowa State Bar Association | Supporting | GA88 |
| Amy Campbell | Iowa State Reserve Law Officers Association | Undecided | GA88 |
| Craig Patterson | Iowa State Reserve Law Officers Association | Undecided | GA88 |
| Doug Struyk | Iowa Veterinary Medical Association | Supporting | GA88 |
| Doug Struyk | Iowa Veterinary Medical Association | Undecided | GA88 |
| Jennifer Dorman | Iowa Veterinary Medical Association | Supporting | GA88 |
| Jennifer Dorman | Iowa Veterinary Medical Association | Undecided | GA88 |
| Jim Carney | Iowa Veterinary Medical Association | Supporting | GA88 |
| Jim Carney | Iowa Veterinary Medical Association | Undecided | GA88 |
| Pete McRoberts | Iowans for Tax Relief | Supporting | GA88 |
| Victoria Sinclair | Iowans for Tax Relief | Supporting | GA88 |
| Amy Campbell | League of Women Voters of Iowa | Undecided | GA88 |
| Craig Patterson | League of Women Voters of Iowa | Undecided | GA88 |
| Amy Campbell | Loess Hills Alliance | Undecided | GA88 |
| Craig Patterson | Loess Hills Alliance | Undecided | GA88 |
| Amy Campbell | Lutheran Services in IA, Inc. | Undecided | GA88 |
| Craig Patterson | Lutheran Services in IA, Inc. | Undecided | GA88 |
| Ben Hammes | Master Builders of Iowa | Supporting | GA88 |
| Julie Smith | Master Builders of Iowa | Supporting | GA88 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA88 |
| Christopher Rants | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA88 |
| Justin Hupfer | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA88 |
| Brian Johnson | NECA - Iowa (NEC) | Undecided | GA88 |
| Christopher Rants | NECA - Iowa (NEC) | Undecided | GA88 |
| Justin Hupfer | NECA - Iowa (NEC) | Undecided | GA88 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA88 |
| Amy Campbell | Okoboji Tourism | Undecided | GA88 |
| Craig Patterson | Okoboji Tourism | Undecided | GA88 |
| Christopher Rants | Plumbers and Steam Fitters Local 33 | Undecided | GA88 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Undecided | GA88 |
| Eric Goranson | Plumbing Heating & Cooling Contractors of IA | Undecided | GA88 |
| Karla Fultz McHenry | Plumbing Heating & Cooling Contractors of IA | Undecided | GA88 |
| Amy Campbell | Polk County - Board of Supervisors | Undecided | GA88 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| David Scott | Society of Land Surveyors of Iowa | Undecided | GA88 |
| Amy Campbell | Travel Federation of Iowa | Undecided | GA88 |
| Craig Patterson | Travel Federation of Iowa | Undecided | GA88 |
| Brandon Geib | Wellmark, Inc. | Undecided | GA88 |
| Scott Sundstrom | Wellmark, Inc. | Undecided | GA88 |