2020Flipped from DemocraticFinal resultsIncumbent defeated
2020 election for Pennsylvania House District 143
Pennsylvania House of Representatives · Pennsylvania
Shelby Labs (R) won with 51.5% of the vote, defeating Wendy Ullman (D) by 3.1 points, a seat Democrats won last time.
Shelby LabsRepublican · winner
51.5%22,517
Wendy UllmanDemocrat · incumbent
48.5%21,172
43,689 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET