1990Flipped from RepublicanFinal results
1990 election for Massachusetts House District 80
Massachusetts House of Representatives · Massachusetts
William F. Cass (D) won with 53.2% of the vote, defeating Christopher P. Sweeney (R) by 6.4 points, a seat Republicans won last time.
William F. CassDemocrat · winner
53.2%9,743
Christopher P. SweeneyRepublican
46.8%8,575
18,318 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