Colorado House of Representatives seat · lines in effect since 2022
Colorado House District 28
A district of about 88,000 people, 52% of adults with a bachelor's degree. It votes D+11.1 relative to the nation for president.
Where it sits among all 65 seats
Every Colorado House of Representatives seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2016 | 2018 | 2020 | 2022 | 2024 | |
|---|---|---|---|---|---|
| U.S. Senate | D+0.3 | No race | D+5.3 | No race | No race |
| Governor | No race | D+5.3 | No race | No race | No race |
| Colorado House of Representatives | No race | No race | No race | D+5.2 | D+5.7 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: Colorado Secretary of State and civicAPIUpdated Nov 7, 2026, 3:01 PM ET
Who lives here, compared
Grey bars show the spread of all 65 seats. Small marks are other seats in Colorado. The black marker is District 28.
Higher than 62% of seats.
Higher than 58% of seats.
Lower than 55% of seats.
Lower than 75% of seats.
Higher than 62% of seats.
Denser than 67% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean. 1 of the 4 flipped this year.
District 1952% college gradsD+8.4Flipped DDistrict 38
59% college gradsD+15.8Held DDistrict 29
52% college gradsD+22.7Held DDistrict 24
50% college gradsD+18.3Held D
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who has held it
These lines took effect in 2022.
- David Rein (D)
2027– · Won 2026 unopposed - Sheila Lieder (D)
2023–2027 · Won 2022 by 5.2, 2024 by 5.7
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)