2 candidates are tracked for Colorado House District 25 on the November 3, 2026 ballot: Mark Herzfeld and Tammy Story. Candidate information follows official Jefferson County election filings; verify with the official election office linked below.
Mark Herzfeld (Republican), Tammy Story (Democratic) are on the November 3 ballot for Colorado House District 25; Tammy Story is the sitting member, per the General Assembly roster (leg.colorado.gov). Major-party nominees were chosen at the June 30 primary; minor-party nominees by assembly or petition and unaffiliated candidates by petition. The field is the Secretary of State's 2026 General Election candidate list. This seat is elected by district; only the district covering your address appears on your ballot.
State legislator. State legislators write and vote on state laws and the state budget, which fund schools, roads, prisons, universities and health programs, and set the rules for local governments and elections. Each member represents one district and serves on committees that shape bills before a floor vote. Terms are two years in most state houses and four in most state senates.
This race. Elected by district: only voters who live in the district see this race on their ballot. The sitting officeholder, Tammy Story, is on the ballot.
Colorado › Jefferson County › Colorado House District 25
Republican
Per the campaign site.
Mark Herzfeld is an Air Force veteran and former B-52 aircraft commander who has worked as a pilot with United Airlines for 34 years, per Herzfeld's campaign site. Herzfeld is also a volunteer firefighter who has fought wildland fires and a youth mentor with the Denver Children's Foundation, per the same source.
Democratic Incumbent
Per the campaign site.
Tammy Story is the sitting State Representative for House District 25, per her campaign site. Story has advocated for public education for more than two decades before and during her time in office, per the same source.
Who is running for Colorado House District 25 in 2026?
2 candidates are tracked for Colorado House District 25 on the November 3, 2026 ballot: Mark Herzfeld and Tammy Story. Candidate information follows official Jefferson County election filings; verify with the official election office linked below.
When is the Colorado House District 25 election in Colorado?
Election Day is Tuesday, November 3, 2026. Registration deadlines, early voting dates and mail ballot rules for Colorado are on the Colorado election hub at theballotbrief.com.
How do I see my exact Jefferson County ballot?
Enter your ZIP code in the lookup at theballotbrief.com for the statewide and congressional races, or a full street address to add the county, city and district contests for that location.
Candidate roster from official Jefferson County and state election office filings, last verified September 25, 2026. Bios and priorities carry their attribution inline.
Cross-check with the official Colorado election office, or see the full Jefferson County sample ballot and your exact ballot by address.
19 tracked races in Jefferson County, Colorado. Landed here from another county's search? Look up your own ballot below.