| State: | Colorado |
| District: | 18 |
| Chamber: | Senate |
| Representative: | Steve Fenberg |
| Party: | Democratic |
| Residence: | Boulder |
| Democratic: | 50.2 |
| Republican: | 9.8 |
| Npp: | 38.5 |
| Percent White: | 83 |
| Percent Black: | 1 |
| Percent Hispanic: | 9 |
| Percent Asian: | 4 |
| Percent Other Race: | 3 |
| Population: | 151,796[1] |
| Population Year: | 2018 |
| Registered: | 119,505[2] |
Colorado's 18th Senate district is one of 35 districts in the Colorado Senate. It has been represented by Democrat Steve Fenberg, the current Senate President, since 2017.[3]
District 18 is based in the city of Boulder, also covering the outlying Boulder County communities of Lyons, Nederland, Gunbarrel, and Niwot.[4] [5]
The district is located almost entirely within Colorado's 2nd congressional district, with a small section extending into the 4th district. It overlaps with the 10th, 11th, 12th, and 13th districts of the Colorado House of Representatives.[6]
Colorado state senators are elected to staggered four-year terms; under normal circumstances, the 18th district holds elections in presidential years.
| Year | Office | Results[7] | |
|---|---|---|---|
| 2020 | President | Biden 83.6 – 14.4% | |
| 2018 | Governor | Polis 82.7 – 15.2% | |
| 2016 | President | Clinton 78.1 – 15.2% | |
| 2014 | Senate | Udall 77.5 – 19.4% | |
| Governor | Hickenlooper 75.6 – 18.1% | ||
| 2012 | President | Obama 76.5 – 21.0% |