1984Final results
1984 election for Massachusetts House District 3
Massachusetts House of Representatives · Massachusetts
Thomas S. Cahir (D) won with 52.8% of the vote, defeating John A. Demello (R) by 5.6 points.
Thomas S. CahirDemocrat · winner
52.8%11,399
John A. DemelloRepublican
47.1%10,181
21,598 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 1984
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET