1978Final results
1978 election for Pennsylvania House District 173
Pennsylvania House of Representatives · Pennsylvania
Henry J. Giammarco (D) won with 67.9% of the vote, defeating Joseph E. Petroski (R) by 35.8 points.
Henry J. GiammarcoDemocrat · winner · incumbent
67.9%16,639
Joseph E. PetroskiRepublican
32.1%7,869
24,508 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