1990Flipped from RepublicanFinal results
1990 election for Colorado Senate District 6
Colorado State Senate · Colorado
Sam Cassidy (D) won with 55.8% of the vote, defeating Margaret Masson (R) by 11.6 points, a seat Republicans won last time.
Sam CassidyDemocrat · winner
55.8%16,797
Margaret MassonRepublican
44.2%13,313
30,110 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 1990
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET