1978Flipped from DemocraticFinal resultsIncumbent defeated
1978 election for Pennsylvania House District 165
Pennsylvania House of Representatives · Pennsylvania
Mary Ann Arty (R) won with 57.5% of the vote, defeating Thomas J. Stapleton Jr. (D) by 15.0 points, a seat Democrats won last time.
Mary Ann ArtyRepublican · winner
57.5%13,582
Thomas J. Stapleton Jr.Democrat · incumbent
42.5%10,033
23,615 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 1978
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET