Early returns from Adams County's Tuesday election show Democrat Karen DeAguero holding a commanding lead over Republican Joseph Domenico in the race for the District 4 seat on the county's Board of Commissioners, with the count showing her ahead 64% to 36%. The margin, while notable, reflects early returns rather than a certified outcome.
According to the Denver Gazette, which first reported the early tally, Adams County voters appear to be favoring DeAguero over Domenico for the board seat. The Colorado Secretary of State's office maintains a statewide results portal that includes county-level 2026 general election data as counting continues.
Who's Running for District 4
DeAguero describes herself as an environmental engineer and the founder of the nonprofit Arvada Voices. Per her campaign website, she has centered her candidacy on environmental stewardship, inclusive governance, and uplifting communities. In an earlier primary-season questionnaire reported by denvergazette.com, DeAguero said her professional background gave her the tools to tackle complex county issues: “As an environmental engineer, I know how to analyze complex issues and deliver practical solutions. As a nonprofit leader, I've worked directly with residents to increase civic participation and accountability.”
Domenico, her Republican opponent, was born and raised in Welby and is part of a third-generation family farming business. He has also served on the Adams County Fire Rescue Board, and his campaign priorities include supporting law enforcement, accountability, and common-sense leadership. Domenico did not return a candidate questionnaire sent out ahead of the general election, according to denverpost.com.
A Two-Person Democratic Primary Gave Way to a General Election Matchup
The denvergazette.com primary coverage noted that Adams County's Board of Commissioners had two seats on the ballot this November, covering Districts 3 and 4. DeAguero faced fellow Democrat Tyler Quick in the primary, while Domenico ran unopposed on the Republican side that same cycle.
DeAguero told denvergazette.com during the primary that she saw housing affordability, responsible growth, and protecting public health and the environment as the county's biggest challenges. An October candidate questionnaire response obtained by denverpost.com echoed similar themes, with the respondent listing attainable housing, environmental stewardship and public health, and inclusive, accountable governance as top priorities for the district.
District 3's Uncontested Race
While District 4 drew a competitive contest, District 3 incumbent Emma Pinter ran unopposed, with no Republican candidate on the ballot, per denvergazette.com. Pinter, a former Westminster City Council member, was first elected to the Adams County board in 2018. Her stated priorities include affordable housing, public land, and economic equality.
What's at Stake on the Five-Member Board
The Adams County Board of Commissioners has five members, each elected to represent a specific district within the county. The board's responsibilities include adopting county ordinances, appointing staff, overseeing and adopting the annual county budget, making land-use decisions, and representing the county on other boards and governing bodies.
The three commissioners not up for election this cycle are Julie Duran Mullica in District 1, Kathy Henson in District 2, and Lynn Baca in District 5. DeAguero, if her early lead holds, would fill the seat vacated by Steve O'Dorisio, who did not run for reelection.
