1980Final results
1980 election for Colorado House District 20
Colorado House of Representatives · Colorado
Bob Stephenson (R) won with 59.0% of the vote, defeating Marion Sondermann (D) by 18.0 points.
Bob StephensonRepublican · winner · incumbent
59.0%8,614
Marion SondermannDemocrat
41.0%5,980
14,594 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