Pennsylvania House of Representatives seat · lines in effect since 2022
Pennsylvania House District 100
A district of about 63,000 people, 19% of adults with a bachelor's degree. It votes R+50.9 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 | |
|---|---|---|
| U.S. Senate | R+47.3 | R+30.8 |
| Governor | No race | R+27.1 |
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 100.
Lower than 93% of seats.
Higher than 95% of seats.
Lower than 60% of seats.
Lower than 90% of seats.
Lower than 81% of seats.
Less dense than 79% 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 107PennsylvaniaR+48.7Held RDistrict 90
22% college gradsR+49.6Held RDistrict 71
23% college gradsR+44.7Held RDistrict 85
22% college gradsR+42.2Held R
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.
- Dave Nissley (R)
2027– · Won 2026 by 35.0 - Bryan D. Cutler (R)
2023–2027 · Won 2022 unopposed, 2024 unopposed
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)