1984Final results
1984 election for Pennsylvania Senate District 1
Pennsylvania State Senate · Pennsylvania
Vincent J. Fumo (D) won with 60.1% of the vote, defeating Mario Dadamo Jr. (R) by 20.2 points.
Vincent J. FumoDemocrat · winner · incumbent
60.1%59,684
Mario Dadamo Jr.Republican
39.9%39,647
99,331 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