| Siegel Public Affairs LLC | 9to5 Colorado, The National Association of Working Women | Opposing | 2017-2018 |
| FRITTS, KELLI L | AARP | Opposing | 2017-2018 |
| Peak Government Affairs LTD. | American Planning Assoc | Opposing | 2017-2018 |
| Boulder County | BOULDER COUNTY | Opposing | 2017-2018 |
| IRWIN, LESLIE | BOULDER COUNTY | Opposing | 2017-2018 |
| RUZZIN, MARK | BOULDER COUNTY | Opposing | 2017-2018 |
| Laws, Summer | Boulder County | Opposing | 2017-2018 |
| Jerry R Braden Inc. | CASTA CO ASSN TRANSIT AGENCIES | Opposing | 2017-2018 |
| Center for Health Progress | Center for Health Progress | Opposing | 2017-2018 |
| Frontline Public Affairs (Miles Consulting, Inc.) | Center for Health Progress (formerly Colorado Coalition for the Medically Underserved) | Opposing | 2017-2018 |
| BRANDEBERRY MCKENNA PUBLIC AFFAIRS | City and County of Denver | Opposing | 2017-2018 |
| Frontline Public Affairs (Miles Consulting, Inc.) | Colorado Center on Law and Policy | Opposing | 2017-2018 |
| Colorado Coalition for the Homeless | Colorado Coalition for the Homeless | Opposing | 2017-2018 |
| Mendez, Barkis and Associates | Colorado Coalition for the Homeless | Opposing | 2017-2018 |
| Siegel Public Affairs, LLC | Colorado Fiscal Institute | Opposing | 2017-2018 |
| Turcios, Esther Yosselin | Colorado Fiscal Institute | Opposing | 2017-2018 |
| White, Kathy A. | Colorado Fiscal Institute | Opposing | 2017-2018 |
| Siegel Long Public Affairs, LLC | Colorado Organization for Latina Opportunity and Reproductive Rights (COLOR) | Opposing | 2017-2018 |
| Siegel Public Affairs, LLC | Colorado Organization for Latina Opportunity and Reproductive Rights (COLOR) | Opposing | 2017-2018 |
| Conley, Theresa Marie | Conservation Colorado | Opposing | 2017-2018 |
| Mayott-Guerrero, Sophia M | Conservation Colorado | Opposing | 2017-2018 |
| Siegel Long Public Affairs, LLC | Conservation Colorado | Opposing | 2017-2018 |
| Siegel Public Affairs, LLC | Conservation Colorado | Opposing | 2017-2018 |
| Mendez, Barkis and Associates | Consumers United Association | Opposing | 2017-2018 |
| The Policy Matters LLC | Enterprise Community Partners | Opposing | 2017-2018 |
| Capitol Focus, LLC | LIVEWELL COLORADO | Monitoring | 2017-2018 |
| Miles Consulting Inc dba Frontline Public Affairs | MILES CONSULTING dba Frontline Public Affairs | Opposing | 2017-2018 |
| MERIDIAN PUBLIC AFFAIRS LLC | Miles Consulting dba Frontline Public Affairs | Opposing | 2017-2018 |
| ProtoStrategies | Miles Consulting, Inc dba Frontline Public Affairs | Opposing | 2017-2018 |
| Miles Consulting, Inc. dba Frontline Public Affairs | Miles Consulting, Inc. dba Frontline Public Affairs | Opposing | 2017-2018 |
| BRANDEBERRY MCKENNA PUBLIC AFFAIRS | Regional Transportation District | Opposing | 2017-2018 |