1986Final results
1986 election for Massachusetts House District 154
Massachusetts House of Representatives · Massachusetts
Kevin Osullivan (D) won with 68.0% of the vote, defeating William F. Mansfield (R) by 35.9 points.
Kevin OsullivanDemocrat · winner
68.0%7,463
William F. MansfieldRepublican
32.0%3,518
10,981 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 1986
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET