| State: | Colorado |
| District: | 21 |
| Chamber: | Senate |
| Representative: | Dafna Michaelson Jenet |
| Party: | Democratic |
| Residence: | Commerce City |
| Democratic: | 38.4 |
| Republican: | 17.8 |
| Npp: | 41.9 |
| Percent White: | 39 |
| Percent Black: | 3 |
| Percent Hispanic: | 53 |
| Percent Asian: | 3 |
| Percent Other Race: | 2 |
| Population: | 164,130[1] |
| Population Year: | 2018 |
| Registered: | 90,324[2] |
Colorado's 21st Senate district is one of 35 districts in the Colorado Senate. It is represented by represented by Democrat Dafna Michaelson Jenet who was selected by a vacancy committee in August 2023 to succeed Democrat Dominick Moreno.[3]
District 21 covers the immediate northern suburbs of Denver in Adams County, including Commerce City, Federal Heights, Berkley, Derby, Sherrelwood, Twin Lakes, Welby, parts of Shaw Heights and Westminster, and the eastern tip of Arvada.[4]
The district is located entirely within Colorado's 7th congressional district, and overlaps with the 30th, 31st, 32nd, 34th, and 35th districts of the Colorado House of Representatives.[5]
Colorado state senators are elected to staggered four-year terms; under normal circumstances, the 21st district holds elections in presidential years.
| Year | Office | Results[6] | |
|---|---|---|---|
| 2020 | President | Biden 62.2 – 34.8% | |
| 2018 | Governor | Polis 60.5 – 33.9% | |
| 2016 | President | Clinton 56.0 – 35.3% | |
| 2014 | Senate | Udall 54.1 – 37.5% | |
| Governor | Hickenlooper 56.0 – 37.6% | ||
| 2012 | President | Obama 64.5 – 32.7% |