Colorado Senate District 18
State Senate District 18
Covers part of Boulder County.
Who Holds This Seat
Running in 2026
No 2026 candidates are on file for this seat yet.
The District
Includes Boulder, Louisville, Gunbarrel, Niwot, Superior (part), Paragon Estates and Valmont.
92 precincts · District lines: State senate lines: U.S. Census Bureau (1:500,000 cartographic boundary) · Precinct lines: Colorado county official precinct layers: Adams County Voter Precincts; Weld County Precincts; Douglas County Voter Precincts; Jefferson County County Precinct Archive 2022; Broomfield Precincts; Boulder County Precincts; El Paso County Precincts (gisservices.elpasoco.com HubPublic) — Census 2020 VTDs kept in other counties; U.S. Census Bureau 2020 TIGER/Line VTDs where no official layer; 2020 elections in Jefferson and Boulder: U.S. Census Bureau 2020 voting districts
Results in This District
| Contest | First | Second | Margin | Votes | Source |
|---|---|---|---|---|---|
| 2024 President91 precinctsColorado Secretary of StateCertified — Colorado Secretary of State… | Kamala D. Harris and Tim Walz (D)78,177 · 82.6% | Donald J. Trump and JD Vance (R)13,850 · 14.6% | D+68.0 | 94,618 | Colorado Secretary of StateCertified — Colorado Secretary of State… |
| 2022 U.S. Senate92 precinctsColorado Secretary of StateCertified — Colorado Secretary of State… | Michael Bennet (D)67,722 · 84.0% | Joe O'Dea (R)11,594 · 14.4% | D+69.6 | 80,591 | Colorado Secretary of StateCertified — Colorado Secretary of State… |
| 2022 Governor92 precinctsColorado Secretary of StateCertified — Colorado Secretary of State… | Jared Polis and Dianne Primavera (D)69,427 · 86.4% | Heidi Ganahl and Danny Moore (R)9,984 · 12.4% | D+74.0 | 80,378 | Colorado Secretary of StateCertified — Colorado Secretary of State… |
| 2020 President129 precinctsColorado Secretary of StateCertified — Colorado Secretary of State… | Joseph R. Biden and Kamala D. Harris (D)86,592 · 84.1% | Donald J. Trump and Michael R. Pence (R)14,511 · 14.1% | D+70.0 | 103,017 | Colorado Secretary of StateCertified — Colorado Secretary of State… |
| 2020 U.S. Senate129 precinctsColorado Secretary of StateCertified — Colorado Secretary of State… | John W. Hickenlooper (D)84,346 · 82.2% | Cory Gardner (R)16,738 · 16.3% | D+65.9 | 102,615 | Colorado Secretary of StateCertified — Colorado Secretary of State… |
Totals add up the certified precinct results for the precincts inside today's district lines. A precinct split by the district line counts in full, or only in the district holding most of its voters where the linkage assigns it to one, and votes a county reported only countywide (some counties' absentee and early votes) are left out, so totals can differ from an official canvass.
Past Results
State Senate — State Senate District 18
Colorado General Election 2024-11-05 · Nov 5, 2024| Candidate | Party | Votes | Share |
|---|---|---|---|
| Judy AmabileDemocratic | Democratic | 73,150 | 90.5% |
| Gary SwingUnity Party of Colorado | Unity Party of Colorado | 7,704 | 9.5% |
Certified — Colorado Secretary of State historical election database (precinct detail as certified by county canvass boards; totals per the official Abstract of Votes Cast) · Colorado Secretary of State — Historical Election Database
State Senate — State Senate District 18
Colorado General Election 2020-11-03 · Nov 3, 2020| Candidate | Party | Votes | Share |
|---|---|---|---|
| Steve FenbergDemocratic | Democratic | 75,261 | 82.9% |
| Peg CageRepublican | Republican | 15,524 | 17.1% |
Certified — Colorado Secretary of State historical election database (precinct detail as certified by county canvass boards; totals per the official Abstract of Votes Cast) · Colorado Secretary of State — Historical Election Database