1990Final resultsIncumbent defeated
1990 election for Pennsylvania Senate District 4
Pennsylvania State Senate · Pennsylvania
Allyson Y. Schwartz (D) won with 58.2% of the vote, defeating M. Joseph Rocks (R) by 16.4 points.
Allyson Y. SchwartzDemocrat · winner
58.2%39,675
M. Joseph RocksRepublican · incumbent
41.8%28,495
68,170 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 1990
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET