Pennsylvania State Senate seat · lines in effect since 2022
Pennsylvania Senate District 20
A district of about 276,000 people, 26% of adults with a bachelor's degree. It votes R+26.1 relative to the nation for president.
Where it sits among all 50 seats
Every Pennsylvania State Senate 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 | 2022 | 2024 | 2026 | |
|---|---|---|---|---|---|
| U.S. Senate | R+19.5 | R+16.9 | No race | R+30.0 | No race |
| Governor | No race | R+11.1 | No race | No race | No race |
| Pennsylvania State Senate | No race | No race | R+35.5 | No race | R+22.7 |
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 50 seats. Small marks are other seats in Pennsylvania. The black marker is District 20.
Lower than 76% of seats.
Higher than 78% of seats.
Higher than 59% of seats.
Lower than 65% of seats.
Lower than 88% of seats.
Less dense than 90% 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 2725% college gradsR+36.7Not up in 2026District 50
24% college gradsR+32.8Held RDistrict 35
29% college gradsR+33.5Not up in 2026District 46
31% college gradsR+28.1Held 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.
- Elisabeth J. Baker (R)
2023– · Won 2022 by 35.5, 2026 by 22.7
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)