2018Final results
2018 election for Pennsylvania Senate District 10
Pennsylvania State Senate · Pennsylvania
Steve Santarsiero (D) won with 52.5% of the vote, defeating Marguerite Quinn (R) by 5.1 points.
Steve SantarsieroDemocrat · winner
52.5%67,438
Marguerite QuinnRepublican
47.5%60,935
128,373 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET