Colorado 2026 SENATE FORECAST

2026 Colorado Senate Forecast:

The Pollsmax 2026 Colorado Senate forecast currently gives Democrat John Hickenlooper a 99.3% chance of defeating Republican Mark Baisley. Pollsmax projects Hickenlooper to receive 61.4% of the vote compared with 38.7% for Baisley, a projected Democratic margin of 22.7 percentage points. The model currently rates the race as Solid Democratic. The forecast is updated using 100,000 simulations incorporating polling and race fundamentals. See the Pollsmax forecast methodology.

The 2026 Colorado Senate election features Democrat John Hickenlooper and Republican Mark Baisley. Incumbent Senator John Hickenlooper is seeking reelection to a second full term, having served in the US Senate since 2021. In 2024, Kamala Harris won Colorado, and Democrats are expected to easily retain the state's Senate seat in 2026. The race will test whether Baisley can regain ground for Republicans in a state that has moved sharply toward Democrats or whether Hickenlooper can keep Colorado safely in the Democratic column. Colorado remains an important Democratic hold as the party tries to protect its path to a US Senate majority.