2026 Colorado Senate Forecast
2026 Colorado Senate Forecast
Last Updated: Friday, February 6, 2025, 11:08 AM ET
Race Note:
Incumbent Democratic Sen. John Hickenlooper, first elected in 2020, is seeking a second term in 2026 and has stated it will be his final campaign. Colorado, a Republican-leaning swing state in the early 21st century, has shifted sharply toward Democrats over the past decade—no state has moved further to the left since 2016. In the 2024 presidential election, Kamala Harris carried Colorado by 11 points, maintaining most of Joe Biden’s 13-point margin from 2020 and far exceeding Democratic performances from the Obama and Clinton years. Democrats currently hold every statewide office and large majorities in the state legislature.
Race Note:
Incumbent Democratic Sen. John Hickenlooper, first elected in 2020, is seeking a second term in 2026 and has stated it will be his final campaign for
Senate. Colorado, once a Republican-leaning swing state, has shifted sharply toward Democrats over the past decade—no state has moved further to the left since 2016.
In the 2024 presidential election, Kamala Harris carried Colorado by 11 points, maintaining most of Joe Biden’s 13-point margin from 2020 and far exceeding Democratic performances from the Obama and Clinton years. Democrats currently hold every statewide office and large majorities in the state legislature.
| County | Prediction | Population | % of State |
|---|---|---|---|
| County 1 | D+14.0 | 664,744 | 12.89% |
| County 2 | R+4.5 | 423,355 | 8.21% |
| County 3 | D+13.9 | 412,339 | 7.99% |
| County 4 | D+55.1 | 261,608 | 5.07% |
| County 5 | R+17.6 | 241,212 | 4.68% |
| County 6 | R+60.0 | 235,969 | 4.58% |
| County 7 | D+34.6 | 225,894 | 4.38% |
| County 8 | R+25.7 | 187,847 | 3.64% |
| County 9 | R+49.5 | 126,084 | 2.44% |
| County 10 | D+39.8 | 118,942 | 2.31% |
| County | Prediction | Population | % of State |
|---|---|---|---|
| County 1 | D+14.0 | 664,744 | 12.89% |
| County 2 | R+4.5 | 423,355 | 8.21% |
| County 3 | D+13.9 | 412,339 | 7.99% |
| County 4 | D+55.1 | 261,608 | 5.07% |
| County 5 | R+17.6 | 241,212 | 4.68% |
| County 6 | R+60.0 | 235,969 | 4.58% |
| County 7 | D+34.6 | 225,894 | 4.38% |
| County 8 | R+25.7 | 187,847 | 3.64% |
| County 9 | R+49.5 | 126,084 | 2.44% |
| County 10 | D+39.8 | 118,942 | 2.31% |