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2026 Colorado Senate Forecast

2026 Colorado Senate Forecast

Last Updated: Wednesday, April 1, 2026, 11:10 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.

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Colorado
US Senate Forecast
Subscribe for rating
EPO forecasts ___________ is favored to win by __%
Candidate
Projection
D
John Hickenlooper Incumbent
__
__
R
Janak Joshi
__
__
Estimated Vote __
Membership Required
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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%
Unlock the 2026 Colorado Forecast for $1
for access to state-by-state predictions, poll averages, county maps, demographic data, and more.
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Colorado Subscribe for rating
US Senate Forecast
EPO forecasts ___________ is favored to win by ___%
Candidate
Votes
Pct.
D
John Hickenlooper Incumbent
___
___
R Janak Joshi
___
___
Estimated Vote ___
Membership Required
Subscribe or upgrade your membership to "Deep Dive" or "Insider" for EPO's live polling average, prediction market tracker, expert forecasts, recent election results, trends, and demographics; plus my county map and predictions.
View Membership Levels
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%

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