- Lead
- 1,127
- Total
- 22,767
- vs nation
- D+6.4
Pennsylvania 173rd State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 2,912
- Total
- 25,062
- vs nation
- D+7.2
- Lead
- 2,794
- Total
- 23,641
- vs nation
- D+9.7
- Lead
- 4,035
- Total
- 21,998
- vs nation
- D+14.5
- Lead
- 2,192
- Total
- 24,194
- vs nation
- D+1.8
- Lead
- 147
- Total
- 24,096
- vs nation
- D+1.8
- Lead
- 608
- Total
- 19,714
- vs nation
- D+2.6
- Lead
- 1,241
- Total
- 18,400
- vs nation
- R+1.8
Key facts
- 2024 presidential margin
- D+5.0MIT Election Lab
- Population
- 62,7732024 5-year
- Population density
- 8,841 / sq mi2024 5-year · TIGER/Line
- Land area
- 7.1 sq miTIGER/Line
- Median household income
- $61,4382024 5-year
- White (non-Hispanic)
- 53.9%2024 5-year
- Black
- 19.0%2024 5-year
- Hispanic / Latino
- 16.6%2024 5-year
- Peak Democratic margin
- D+18.3 in 2012MIT Election Lab
- Peak Republican margin
- R+90.1 in 1904MIT Election Lab
- Most similar
- State House District 174, PA · twin score 94.7
presidential history
Party record book
Pennsylvania 173rd State House 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
58.8%
12,936 votes · D+18.3 · modeled estimate
Runner-up · Joe Biden, 2020 · 55.4%
Republican
Theodore Roosevelt1904
94.6%
21,175 votes · R+90.1 · modeled estimate
Runner-up · William McKinley, 1900 · 91.9%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Lyndon B. Johnson1964
14,793votes
39.8% of the vote · R+20.1 · modeled estimate
Runner-up · Joe Biden, 2020 · 13,886 votes
Republican
Thomas E. Dewey1948
39,473votes
78.7% of the vote · R+59.7 · modeled estimate
Runner-up · Herbert Hoover, 1928 · 38,949 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
Barack Obama2012
+14.5pts D vs U.S.
Place D+18.3 · U.S. D+3.9 · modeled estimate
Runner-up · Hillary Clinton, 2016 · +9.7 pts
Republican
Herbert Hoover1932
+85.2pts R vs U.S.
Place R+67.4 · U.S. D+17.8 · modeled estimate
Runner-up · Charles E. Hughes, 1916 · +82.6 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.
District 173 sits within Pennsylvania's southeastern suburban corridor, where shifting college-educated voter preferences have nudged presidential margins a few points left over successive cycles while keeping the seat genuinely competitive at the legislative level.
Across the recorded series it reached a Democratic high of 18.3 points in 2012 and a Republican high of 90.1 points in 1904. Between 2020 and 2024 the district moved 6.7 points toward the Republican candidate; the 2024 margin was 5.0 points.
A population of 62,773, a 54% non-Hispanic-white share, and a median household income of $61,438 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 174 and State House District 177.
The state-house 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 173rd State House District. Akashic. https://akashic.app/sld-lower/42173/. Accessed May 20, 2026. License: CC BY 4.0.