Summer L. Lee

In the 2024 House race for PA-12, Summer Lee (D) defeated James Hayes (R) 56.4% to 43.6%. Summer Lee received 234,802 votes compared to 181,426 for James Hayes, a comfortable 12.8-point margin indicating a moderately safe district.

As the incumbent, Summer Lee benefited from name recognition, established constituent services, and the roughly 2-3 point advantage that sitting members typically enjoy. The 2024 presidential election drove higher voter turnout, which can help or hurt down-ballot candidates depending on the top of the ticket.

In the 2022 House race for PA-12, Summer Lee (D) defeated Mike Doyle (R) 56.2% to 43.8%. Summer Lee received 184,674 votes compared to 143,946 for Mike Doyle, a comfortable 12.4-point margin indicating a moderately safe district.

This race flipped the seat from Republican to Democrat. Frederick B. Keller (R) held the seat previously but either retired or lost in a primary. Party flips at the seat level are relatively rare and often signal shifting district dynamics. As a Democrat, Summer Lee won despite the historical midterm penalty against the president's party (Democrat Biden was in office).