Pennsylvania State Senate seat · lines in effect since 2022
Pennsylvania Senate District 21
A district of about 257,000 people, 23% of adults with a bachelor's degree. It votes R+42.9 relative to the nation for president.
2024 election
Nov 5, 2024- Scott Hutchinson (R) · won100.0%
Unopposed.
Source: Pennsylvania Department of StateUpdated Oct 1, 2026, 6:19 AM ET
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 election for this seat
15 races since 1968. District numbers are redrawn after each census: each group is one set of lines.
| Year | Winner | Runner-up | Won by |
|---|---|---|---|
| Lines first used in 2022 | |||
| 2024 | Scott Hutchinson (R) | — | Unopposed |
| Lines first used in 2012 | |||
| 2020 | Scott Hutchinson (R) | Shelbie Lynn Stromyer (D) | 41.7 |
| 2016 | Scott Hutchinson (R) | — | Unopposed |
| 2012 | Scott Hutchinson (R) | — | Unopposed |
| Lines first used in 2002 | |||
| 2008 | Martina White (R) | Mary Lea Lucas (I) | 69.2 |
| 2004 | Martina White (R) | Kevan M. Yenerall (D) | 37.7 |
| Lines first used in 1992 | |||
| 2000 | Martina White (R) | Vernon L. Etzel (I) | 75.2 |
| 1996 | Martina White (R) | Robert Thomas (D) | 20.1 |
| 1992 | Tim Shaffer (R) | Rich Bartchy (D) | 38.6 |
| Lines first used in 1982 | |||
| 1988 | Tim Shaffer (R) | Thomas D. Lavorini (D) | 40.4 |
| 1984 | Tim Shaffer (R) | Edward Grystar (D) | 25.0 |
| Lines first used in 1972 | |||
| 1980 | Tim Shaffer (R) | James E. Ross (D) | 2.0 |
| 1976 | W. Thomas Andrews (R) | James A. Green (D) | 3.2 |
| 1972 | W. Thomas Andrews (R) | Donald O. Oesterling (D) | 9.8 |
| Lines first used in 1962 | |||
| 1968 | Donald O. Oesterling (D) | Robert L. Gardner (R) | 15.0 |
Won by: the winner's lead over the runner-up, in points of the vote. Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Districts that overlap District 21
The state's districts in other chambers that share residents with this one, and the share of District 21's area in each.
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 | 2020 | 2024 | |
|---|---|---|---|---|
| President | R+41.8 | No race | R+40.6 | R+39.8 |
| U.S. Senate | R+35.3 | R+22.7 | No race | R+35.1 |
| Governor | No race | R+19.5 | No race | 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 8, 2026, 7:01 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 21.
Lower than 92% of seats.
Higher than 96% of seats.
Lower than 94% of seats.
Lowest of 50 seats.
Lowest of 50 seats.
Less dense than 96% 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 2324% college gradsR+42.2Not up in 2026District 41
23% college gradsR+40.6Not up in 2026District 30
20% college gradsR+51.1Held RDistrict 32
PennsylvaniaR+49.6Held 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