Colorado House of Representatives seat · lines in effect since 2022
Colorado House District 45
A district of about 73,000 people, 57% of adults with a bachelor's degree. It votes R+17.0 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 | 2026 | |
|---|---|---|---|---|---|---|
| U.S. Senate | R+27.8 | No race | R+23.2 | No race | No race | No race |
| Governor | No race | R+23.1 | No race | No race | No race | No race |
| Colorado House of Representatives | No race | No race | No race | R+23.8 | R+24.5 | R+13.1 |
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 StateUpdated 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 45.
Higher than 69% of seats.
Higher than 52% of seats.
Lower than 91% of seats.
Lower than 80% of seats.
Higher than 58% of seats.
Less dense than 62% 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.
District 1461% college gradsR+12.1CountingDistrict 65
50% college gradsR+17.9Held RDistrict 20
54% college gradsR+34.3Held RDistrict 22
41% college gradsR+11.6Counting
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.
- Max Brooks (R)
2025– · Won 2024 by 24.5 - Lisa Frizell (R)
2023–2025 · Won 2022 by 23.8
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)