2026 Colorado Senate election

2026 Colorado Senate election

November 3, 2026
18 of the 35 seats in the Colorado Senate 18 seats needed for a majority
Leader Robert Rodriguez (term-limited) Cleave Simpson Party Democratic Republican Leader since September 8, 2023 June 12, 2025 Leader's seat 32nd–Denver 6th–Alamosa Last election 12 seats, 56.35% 6 seats, 41.01% Current seats 22 11 Seats needed 7 Seats up 11 6
Map of the incumbents:      Democratic incumbent      Democratic incumbent retiring or term-limited      Republican incumbent      Republican incumbent retiring or term-limited      Vacant      No election
Incumbent President of the Senate James Coleman Democratic

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.

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]

Summary of results by district

† - Incumbent term-limited or not seeking re-election

District	2024 Pres.[5]	Incumbent	Party		Elected Senator	Outcome
1st	R +44.4	Byron Pelton		Rep	TBD
3rd	R +5.1	Nick Hinrichsen†		Dem	TBD
4th	R +17.2	Mark Baisley†		Rep	TBD
7th	R +24.8	Janice Rich		Rep	TBD
8th	D +10.2	Dylan Roberts		Dem	TBD
9th	R +14.6	Lynda Zamora Wilson		Rep	TBD
11th	D +4.3	Tony Exum		Dem	TBD
15th	D +7.7	Janice Marchman		Dem	TBD
17th	D +39.6	Katie Wallace		Dem	TBD
20th	D +17.3	Lisa Cutter		Dem	TBD
22nd	D +32.9	Jessie Danielson†		Dem	TBD
24th	D +6.7	Kyle Mullica		Dem	TBD
25th	D +23.1	William Lindstedt		Dem	TBD
27th	D +12.1	Tom Sullivan		Dem	TBD
30th	D +2.4	John Carson		Rep	TBD
32nd	D +47.7	Robert Rodriguez†		Dem	TBD
34th	D +57.8	Julie Gonzales†		Dem	TBD
35th	R +43.5	Rod Pelton		Rep	TBD

Footnotes

References

1. "Senate Term Limits". Colorado General Assembly.
2. Bartolo, James (June 5, 2025). "Incumbent Pueblo state senator won't seek reelection. What's next for Pueblo Democrats?". The Pueblo Chieftain. Retrieved June 9, 2025.
3. "TRACER Colorado". Retrieved November 18, 2025.
4. Toomer, Lindsey (January 5, 2026). "Republican Mark Baisley now running for U.S. Senate, drops bid for Colorado governor". Colorado Newsline. Retrieved January 6, 2026.
5. "Dave's Redistricting". Retrieved June 9, 2025.