- Lead
- 85,243
- Total
- 107,713
- vs nation
- D+80.6
Pennsylvania 3rd State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 95,166
- Total
- 111,802
- vs nation
- D+80.7
- Lead
- 102,747
- Total
- 115,217
- vs nation
- D+87.1
- Lead
- 104,200
- Total
- 114,032
- vs nation
- D+87.5
- Lead
- 104,686
- Total
- 115,966
- vs nation
- D+83.0
- Lead
- 94,226
- Total
- 106,408
- vs nation
- D+91.0
- Lead
- 78,057
- Total
- 89,511
- vs nation
- D+86.7
- Lead
- 72,177
- Total
- 84,530
- vs nation
- D+76.9
Key facts
- 2024 presidential margin
- D+79.1MIT Election Lab
- Population
- 262,2032024 5-year
- Population density
- 18,864 / sq mi2024 5-year · TIGER/Line
- Land area
- 13.9 sq miTIGER/Line
- Median household income
- $47,4402024 5-year
- White (non-Hispanic)
- 15.1%2024 5-year
- Black
- 54.8%2024 5-year
- Hispanic / Latino
- 20.3%2024 5-year
- Peak Democratic margin
- D+91.4 in 2012MIT Election Lab
- Peak Republican margin
- R+20.1 in 1924MIT Election Lab
- Most similar
- State Senate District 8, PA · twin score 96.7
presidential history
Party record book
Pennsylvania 3rd State Senate District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 (partial returns from 1876) · 38 presidential cycles · 38 with a vote-share denominator · 34 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Barack Obama2012
95.5%
108,942 votes · D+91.4 · modeled estimate
Runner-up · Barack Obama, 2008 · 95.0%
Republican
Theodore Roosevelt1904
52.9%
10,748 votes · R+10.2 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 51.3%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Lyndon B. Johnson1964
124,003votes
91.4% of the vote · D+83.1 · modeled estimate
Runner-up · John F. Kennedy, 1960 · 115,081 votes
Republican
Thomas E. Dewey1948
20,534votes
19.8% of the vote · D+57.2 · modeled estimate
Runner-up · Herbert Hoover, 1928 · 20,285 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Walter Mondale1984
+94.0pts D vs U.S.
Place D+75.8 · U.S. R+18.2 · modeled estimate
Runner-up · John Kerry, 2004 · +91.0 pts
Republican
Calvin Coolidge1924
−5.1pts R vs U.S.
Place R+20.1 · U.S. R+25.2 · modeled estimate
Runner-up · William H. Taft, 1912 · −8.2 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.
Anchored in the Philadelphia region, this district recorded a D+79.1 presidential margin in 2024, placing it among the commonwealth's most reliably blue constituencies at the state senate level.
Across the recorded series it reached a Democratic high of 91.4 points in 2012 and a Republican high of 20.1 points in 1924. Between 2020 and 2024 the district moved 6.0 points toward the Republican candidate; the 2024 margin was 79.1 points.
A population of 262,203, a 15% non-Hispanic-white share, and a median household income of $47,440 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 8 and State Senate District 25.
The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
District research tools
Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →
Pennsylvania 3rd State Senate District. Akashic. https://akashic.app/sld-upper/42003/. Accessed May 20, 2026. License: CC BY 4.0.