| Aponte Public Affairs, Inc. | American Academy of Pediatrics ( AAP) | Opposing | 2019-2020 |
| Mendez, Barkis and Associates | American Civil Liberties Union of Colorado | Opposing | 2019-2020 |
| Political Advocacy, Inc | COLORADO ASSOCIATION OF SCHOOL EXECUTIVES | Opposing | 2019-2020 |
| Valdez Public Affairs, LLC | COLORADO CATHOLIC CONFERENCE | Supporting | 2019-2020 |
| Valdez Public Affairs, LLC | COLORADO CATHOLIC CONFERENCE | Monitoring | 2019-2020 |
| Richard G Brown Enterprises, Inc. | COLORADO OBSTETRICAL AND GYNECOLOGICAL SOCIETY | Opposing | 2019-2020 |
| Ascent Strategies, LLC | COLORADO PARENTS FOR VACCINATED COMMUNITIES | Opposing | 2019-2020 |
| Aponte Public Affairs, Inc. | Children's Hospital Colorado (CHCO) | Opposing | 2019-2020 |
| Martin, Carolyn | Christian Home Educators of Colorado | Supporting | 2019-2020 |
| Recht Kornfeld PC | Colorado Catholic Conference | Supporting | 2019-2020 |
| Recht Kornfeld, P.C. | Colorado Catholic Conference | Supporting | 2019-2020 |
| Colorado Children's Campaign | Colorado Children's Campaign | Opposing | 2019-2020 |
| Miller, Erin Ashley | Colorado Children's Campaign | Opposing | 2019-2020 |
| Square State Strategy Group | Colorado Christian University | Supporting | 2019-2020 |
| Colorado Cross-Disability Coalition | Colorado Cross-Disability Coalition | Supporting | 2019-2020 |
| BRANDEBERRY MCKENNA PUBLIC AFFAIRS | Colorado Hospital Association | Opposing | 2019-2020 |
| Burkhart, Amber | Colorado Hospital Association | Opposing | 2019-2020 |
| Ewing, Joshua | Colorado Hospital Association | Opposing | 2019-2020 |
| MULREADY, KATHERINE | Colorado Hospital Association | Opposing | 2019-2020 |
| Koontz, Susan G | Colorado Medical Society | Opposing | 2019-2020 |
| Anderson, Angela Lauren | Colorado Parents for Vaccinated Communities | Opposing | 2019-2020 |
| Williams, Alyson Brozovich | Health District of Northern Larimer County | Monitoring | 2019-2020 |
| Mizer, Susanna | Healthier Colorado | Opposing | 2019-2020 |
| Aponte Public Affairs, Inc. | Immunize Colorado (IZCO) | Opposing | 2019-2020 |
| Emma Hudson Consulting LLC | Interfaith Alliance | Opposing | 2019-2020 |
| Allied Agenda, LLC | League of Women Voters of Colorado | Monitoring | 2019-2020 |
| Fransen Political Strategies, LLC. | Parents United | Supporting | 2020-2021 |
| Square State Strategiesf LLC | Square State Strategy Group | Supporting | 2019-2020 |
| Square State Strategy Group | Square State Strategy Group | Supporting | 2019-2020 |
| Richard G Brown Enterprises, Inc. | THE DOCTORS COMPANY | Monitoring | 2019-2020 |
| The Johnson Consulting Companies Inc. | UNIVERSITY OF COLORADO | Monitoring | 2019-2020 |