2020Final results
2020 election for Pennsylvania House District 156
Pennsylvania House of Representatives · Pennsylvania
Dianne Herrin (D) won with 55.3% of the vote, defeating Leonard J. Iacono (R) by 10.7 points.
Dianne HerrinDemocrat · winner
55.3%21,914
Leonard J. IaconoRepublican
44.7%17,679
39,593 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