The Ballot Brief
Jefferson County, Colorado

Colorado Senate District 20

Mancuso and Lieder are on the November 3, 2026 ballot. Names follow official Jefferson County election filings.

About this race

Richard (Rich) Mancuso (Republican), Sheila Lieder (Democratic) are on the November 3 ballot for Colorado Senate District 20. Not on the November ballot: Lisa Cutter, the sitting member per the roster. 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.

What this office does

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.

We use AI to research and write election information. Errors are possible. Verify important details with official sources.

Colorado › Jefferson County › Colorado Senate District 20

Richard (Rich) Mancuso

Richard (Rich) Mancuso

Republican

Top priorities

From the campaign site

  • Cost of living and inflation
  • Economy and jobs
  • Housing affordability and supply
Biography

Mancuso is a U.S. Army veteran who served as a combat medic and psychiatric specialist, then built a career in financial services and later taught American history at D'Evelyn Junior/Senior High School, where he was named Teacher of the Year five times, per the campaign site. Per the campaign site, Mancuso holds three degrees from Winona State University, is a past Rotary Club president, and chaired the Jefferson County Liquor Board.

Campaign site (opens in a new tab)

Sheila Lieder

Democratic

Top priorities

From the campaign site

  • Cites work increasing the Earned Income Tax Credit and expanding apprenticeship and vocational training programs
  • Cites work protecting funding for full day kindergarten
Biography

Sheila Lieder is a candidate for Colorado Senate District 20, per her campaign site. She previously served in the Colorado House representing Jefferson County, per her campaign site.

Campaign site (opens in a new tab)
Next on your ballotColorado Senate District 22

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Voting info and more

Voting info and more
Questions about this race

Who is running for Colorado Senate District 20 in 2026?

2 candidates are tracked for Colorado Senate District 20 on the November 3, 2026 ballot: Richard (Rich) Mancuso and Sheila Lieder. Candidate information follows official Jefferson County election filings; verify with the official election office linked below.

When is the Colorado Senate District 20 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.

Verify this race

Candidate roster from official Jefferson County and state election office filings, last verified October 19, 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.

The rest of your Jefferson County ballot

19 tracked races in Jefferson County, Colorado. Landed here from another county's search? Look up your own ballot below.

Also on your ballot
Colorado House District 23Colorado House District 24Colorado House District 25See all 19 Jefferson County races
Candidate profiles
Richard (Rich) Mancuso, full profileSheila Lieder, full profileOfficial Colorado election office