2016Final results
2016 election for Pennsylvania House District 166
Pennsylvania House of Representatives · Pennsylvania
Greg Vitali (D) won with 66.0% of the vote, defeating James J. Knapp III (R) by 32.1 points.
Greg VitaliDemocrat · winner · incumbent
66.0%23,783
James J. Knapp IIIRepublican
34.0%12,236
The same year, the district voted D+38.5 for president; this race was D+32.1.36,019 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET
The seat over time
D − R margin in this seat's races around 2016
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET