Philadelphia in Pennsylvania, drawn against the state outline.

Philadelphia has drifted 7.9 points right across the 2008-2024 span, sliding from D+66.7 under Obama to D+58.8 last cycle. The peak was 2012 at D+71.3, and every cycle since has moved rightward — 4.3 points in 2016, 3.4 points in 2020, 4.7 points in 2024. The 2020→2024 step was the largest of the three, making 2024 the inflection year for the trend's acceleration. Total votes cast held in a tight band between 690K and 741K across all five cycles, so the margin compression came from vote share, not collapsing turnout.

Philadelphia County splits 45.0% white and 43.2% Black across 1.52 million people, with Hispanic residents at 8.5% and Asian at 4.5%. Median household income sits at $30,746 and the poverty rate runs 22.9%, with 9.0% of residents foreign-born. Bachelor's attainment reaches 17.9% — a low-income, low-education profile that anchors the county's Democratic lean.