2026 Colorado Senate election
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The 2026 Colorado Senate election is scheduled to be held on November 3, 2026. Voters in 18 out of the 35 districts of the state Senate will elect their representative for a four-year term.[1] This election will coincide with other Colorado elections of the same year and the biennial United States elections.
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November 3, 2026
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18 of the 35 seats in the Colorado Senate 18 seats needed for a majority | ||||||||||||||||||||||||||||
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 Map of the incumbents: Democratic incumbent Democratic incumbent retiring or term-limited Republican incumbent Republican incumbent retiring or term-limited Vacant No election | ||||||||||||||||||||||||||||
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Background
| Harris 40–50% 50–60% 60–70% 70–80% 80-90% |
Trump 40–50% 50–60% 60–70% 70–80% |
In the 2024 US Presidential Election, Kamala Harris won 24 districts, while Donald Trump won 11. Republicans represented one district where Harris had won in 2024: District 30 (Harris +2.42%), represented by John Carson. Additionally, one Democrat, Nick Hinrichsen, represented District 3, which Trump won by 5.13%.
Retiring incumbents
Democrats
- District 3: Nick Hinrichsen is retiring.[2]
- District 20: Lisa Cutter is retiring to run for Jefferson County Commissioner.[3]
- District 22: Jessie Danielson is term-limited.
- District 32: Robert Rodriguez is term-limited.
- District 34: Julie Gonzales is term-limited.
Republicans
- District 4: Mark Baisley is retiring to run for the U.S. Senate.[4]
Predictions
| Source | Ranking | As of |
|---|---|---|
| Sabato's Crystal Ball[5] | Safe D | January 22, 2026 |
Incumbents and candidates
† - Incumbent term-limited or not seeking re-election
| Dist. | 2024 Pres.[6] | Incumbent | This race | ||||
|---|---|---|---|---|---|---|---|
| Member | Party | First Elected | Status | Candidates[7] | |||
| 1st | R +44.4 | Byron Pelton | Republican | 2022 | Incumbent Running |
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| 3rd | R +5.1 | Nick Hinrichsen† | Democratic | 2022 (Appointed) | Incumbent Retiring |
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| 4th | R +17.2 | Mark Baisley† | Republican | 2022 | Incumbent Retiring |
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| 7th | R +24.8 | Janice Rich | Republican | 2022 | Incumbent Running | ||
| 8th | D +10.2 | Dylan Roberts | Democratic | 2022 | Incumbent Running |
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| 9th | R +14.6 | Lynda Zamora Wilson | Republican | 2025 (Appointed) | Incumbent Running |
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| 11th | D +4.3 | Tony Exum | Democratic | 2022 | Incumbent Running |
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| 15th | D +7.7 | Janice Marchman | Democratic | 2022 | Incumbent Running |
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| 17th | D +39.6 | Katie Wallace | Democratic | 2025 (Appointed) | Incumbent Running |
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| 20th | D +17.3 | Lisa Cutter | Democratic | 2022 | TBD |
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| 21st | D +28.7 | Adrienne Benavidez | Democratic | 2026 (Appointed) | Incumbent Running |
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| 22nd | D +32.9 | Jessie Danielson† | Democratic | 2018 | Incumbent Retiring |
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| 24th | D +6.7 | Kyle Mullica | Democratic | 2022 | Incumbent Running |
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| 25th | D +23.1 | William Lindstedt | Democratic | 2026 (Appointed) | Incumbent Running |
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| 27th | D +12.1 | Tom Sullivan | Democratic | 2022 | Incumbent Running |
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| 29th | D +27 | Iman Jodeh | Democratic | 2025 (Appointed) | Incumbent Running |
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| 30th | D +2.4 | John Carson | Republican | 2025 (Appointed) | Incumbent Running |
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| 31st | D +64.5 | Matt Ball | Democratic | 2025 (Appointed) | Incumbent Running |
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| 32nd | D +47.7 | Robert Rodriguez† | Democratic | 2018 | Incumbent Retiring |
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| 34th | D +57.8 | Julie Gonzales† | Democratic | 2018 | Incumbent Retiring |
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| 35th | R +43.5 | Rod Pelton | Republican | 2022 | Incumbent Running |
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