2018Flipped from RepublicanFinal resultsIncumbent defeated
2018 election for Colorado House District 37
Colorado House of Representatives · Colorado
Tom Sullivan (D) won with 54.0% of the vote, defeating Cole Wist (R) by 8.1 points, a seat Republicans won last time.
Tom SullivanDemocrat · winner
54.0%21,686
Cole WistRepublican · incumbent
46.0%18,451
40,137 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