- Lead
- 3,798
- Total
- 40,746
- vs nation
- R+7.8
Pennsylvania 187th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 3,101
- Total
- 39,511
- vs nation
- R+12.3
- Lead
- 5,274
- Total
- 33,945
- vs nation
- R+17.6
- Lead
- 3,940
- Total
- 30,334
- vs nation
- R+16.8
- Lead
- 1,627
- Total
- 30,901
- vs nation
- R+12.5
- Lead
- 5,507
- Total
- 30,373
- vs nation
- R+15.7
- Lead
- 4,780
- Total
- 24,639
- vs nation
- R+19.9
- Lead
- 3,433
- Total
- 22,330
- vs nation
- R+23.9
Key facts
- 2024 presidential margin
- R+9.3MIT Election Lab
- Population
- 66,2652024 5-year
- Population density
- 432 / sq mi2024 5-year · TIGER/Line
- Land area
- 153 sq miTIGER/Line
- Median household income
- $109,9392024 5-year
- White (non-Hispanic)
- 80.4%2024 5-year
- Black
- 3.1%2024 5-year
- Hispanic / Latino
- 7.7%2024 5-year
- Peak Democratic margin
- D+21.5 in 1912MIT Election Lab
- Peak Republican margin
- R+63.4 in 1928MIT Election Lab
- Most similar
- State House District 128, PA · twin score 84.0
presidential history
Party record book
Pennsylvania 187th 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
Lyndon B. Johnson1964
54.4%
10,094 votes · D+9.6 · modeled estimate
Runner-up · Barack Obama, 2008 · 46.9%
Republican
Herbert Hoover1928
81.2%
10,242 votes · R+63.4 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1956 · 72.6%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Kamala Harris2024
18,208votes
44.7% of the vote · R+9.3 · modeled estimate
Runner-up · Joe Biden, 2020 · 17,978 votes
Republican
Donald Trump2024
22,006votes
54.0% of the vote · R+9.3 · modeled estimate
Runner-up · Donald Trump, 2020 · 21,079 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
Woodrow Wilson1912
+2.0pts D vs U.S.
Place D+21.5 · U.S. D+19.5 · a third-party candidate carried the Place · modeled estimate
Runner-up · Kamala Harris, 2024 · −7.8 pts
Republican
Herbert Hoover1928
+46.0pts R vs U.S.
Place R+63.4 · U.S. R+17.5 · modeled estimate
Runner-up · Herbert Hoover, 1932 · +36.0 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.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | D | 52.3%17,147 | 47.7%15,631 | 32,778 |
The 2024 presidential margin was R+9.4, one of the narrower results among Pennsylvania's state house districts, compared with R+5.3 in 2008. The district had about 168,000 residents, 62.3% White alone in the 2024 ACS 5-year.
Across the recorded series it reached a Democratic high of 21.5 points in 1912 and a Republican high of 63.4 points in 1928. Between 2020 and 2024 the district moved 1.5 points toward the Republican candidate; the 2024 margin was 9.3 points.
A population of 66,265, a 80% non-Hispanic-white share, and a median household income of $109,939 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 128 and State House District 137.
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 187th State House District. Akashic. https://akashic.app/sld-lower/42187/. Accessed May 20, 2026. License: CC BY 4.0.