Pennsylvania House of Representatives seat · lines in effect since 2022
Pennsylvania House District 104
A district of about 67,000 people, 20% Hispanic and 25% Black, 24% of adults with a bachelor's degree. It votes D+29.2 relative to the nation for president.
Where it sits among all 203 seats
Every Pennsylvania House of Representatives seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2016 | 2018 | 2024 | |
|---|---|---|---|
| U.S. Senate | D+26.3 | D+37.1 | D+35.2 |
| Governor | No race | D+42.8 | No race |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 7, 2026, 3:01 PM ET
Who lives here, compared
Grey bars show the spread of all 203 seats. Small marks are other seats in Pennsylvania. The black marker is District 104.
Lower than 74% of seats.
Lower than 70% of seats.
Higher than 90% of seats.
Higher than 89% of seats.
Higher than 84% of seats.
Denser than 70% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 17723% Hispanic · 29% college gradsD+25.1Held DDistrict 173
21% Black · 24% college gradsD+6.7Held DDistrict 105
21% Black · 38% college gradsD+24.6Held DDistrict 163
30% Black · 33% college gradsD+27.4Held D
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who has held it
These lines took effect in 2022.
- David A. Madsen (D)
2023– · Won 2022 by 41.4, 2024 unopposed, 2026 unopposed
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)