2018 general · November 6, 2018
2018 Colorado State Senate election results, district by district
Every Colorado State Senate district in the 2018 general election: winners, margins, unopposed seats and seats that changed party.
Seats after the election
Democrats controlled the chamber · 35 seats
After the electionD 19 · R 16
Races17
Changed party2
Unopposed0%0 races
Incumbents defeated2
Every district
D 9 · R 8
| Race | Winner | Won by | Notes |
|---|---|---|---|
| SD-1 | Jerry Sonnenberg (R) | 58.0 | |
| SD-2 | Dennis Hisey (R) | 30.6 | |
| SD-3 | Leroy M. Garcia Jr. (D) | 47.2 | |
| SD-5 | Kerry Donovan (D) | 20.9 | |
| SD-6 | Don Coram (R) | 9.4 | |
| SD-7 | Ray Scott (R) | 27.2 | |
| SD-9 | Paul Lundeen (R) | 40.6 | |
| SD-11 | Pete Lee (D) | 23.9 | |
| SD-13 | John Cooke (R) | 20.6 | |
| SD-15 | Rob Woodward (R) | 6.2 | |
| SD-16 | Tammy Story (D) | 14.4 | FlippedIncumbent lost |
| SD-20 | Jessie Danielson (D) | 11.8 | |
| SD-22 | Brittany Pettersen (D) | 16.3 | |
| SD-24 | Faith Winter (D) | 12.5 | FlippedIncumbent lost |
| SD-30 | Chris Holbert (R) | 11.2 | |
| SD-32 | Robert Rodriguez (D) | 48.6 | |
| SD-34 | Julie Gonzales (D) | 66.3 |
Colorado State Senate
Results are each source's final count; margins are the winner's lead over the runner-up in points of the vote. Source: MIT Election Data and Science Lab