1980Flipped from RepublicanFinal resultsIncumbent defeated
1980 election for Colorado House District 57
Colorado House of Representatives · Colorado
Kathleen Sullivan (D) won with 53.5% of the vote, defeating Nick Theos (R) by 12.1 points, a seat Republicans won last time.
Kathleen SullivanDemocrat · winner
53.5%11,883
Nick TheosRepublican · incumbent
41.5%9,207
Paul MohnLibertarian
5.0%1,115
22,205 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1980
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET