2018Final results
2018 election for Colorado House District 11
Colorado House of Representatives · Colorado
Jonathan Singer (D) won with 67.3% of the vote, defeating Brian O. Donahue (R) by 34.6 points.
Jonathan SingerDemocrat · winner · incumbent
67.3%27,545
Brian O. DonahueRepublican
32.7%13,394
40,939 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET