HarrisDemocratic52.0%75,295TrumpRepublican47.0%68,116OtherAll other candidates1.0%1,453
D+5.0- Lead
- 7,179
- Total
- 144,864
- vs nation
- D+6.4
modeled Census-place estimatemodeled estimate
Akashicstate senate district
Pennsylvania 18th State Senate District
Contests in this Place (45 available)
President38 · 1876–2024 · 3 mapped
▦ precinct · ▥ counties · ▢ no spatial detail
President margin by year
Place winner margin
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
President results by year
Modeled candidate-vote estimate on current district boundaries
BidenDemocratic53.1%74,261TrumpRepublican45.4%63,543OtherAll other candidates1.5%2,126
D+7.7- Lead
- 10,718
- Total
- 139,930
- vs nation
- D+3.2
modeled Census-place estimatemodeled estimate
ClintonDemocratic49.5%58,785TrumpRepublican45.9%54,508OtherAll other candidates4.6%5,479
D+3.6- Lead
- 4,277
- Total
- 118,772
- vs nation
- D+1.5
modeled Census-place estimatemodeled estimate
ObamaDemocratic55.0%59,638RomneyRepublican43.3%46,904OtherAll other candidates1.7%1,807
D+11.8- Lead
- 12,734
- Total
- 108,349
- vs nation
- D+7.9
modeled Census-place estimatemodeled estimate
ObamaDemocratic58.8%66,432McCainRepublican39.5%44,566OtherAll other candidates1.7%1,963
D+19.4- Lead
- 21,866
- Total
- 112,961
- vs nation
- D+12.1
modeled Census-place estimatemodeled estimate
KerryDemocratic53.5%55,935BushRepublican45.4%47,494OtherAll other candidates1.1%1,132
D+8.1- Lead
- 8,441
- Total
- 104,561
- vs nation
- D+10.5
modeled Census-place estimatemodeled estimate
GoreDemocratic54.0%46,500BushRepublican42.2%36,300OtherAll other candidates3.8%3,277
D+11.8- Lead
- 10,200
- Total
- 86,077
- vs nation
- D+11.3
modeled Census-place estimatemodeled estimate
ClintonDemocratic51.1%38,642DoleRepublican36.4%27,528OtherAll other candidates12.4%9,405
D+14.7- Lead
- 11,114
- Total
- 75,575
- vs nation
- D+6.2
modeled Census-place estimatemodeled estimate
Key facts
- 2024 presidential margin
- D+5.0MIT Election Lab
- Population
- 263,4042024 5-year
- Population density
- 1,073 / sq mi2024 5-year · TIGER/Line
- Land area
- 246 sq miTIGER/Line
- Median household income
- $86,5272024 5-year
- White (non-Hispanic)
- 68.8%2024 5-year
- Black
- 6.5%2024 5-year
- Hispanic / Latino
- 16.9%2024 5-year
- Peak Democratic margin
- D+51.0 in 1964MIT Election Lab
- Peak Republican margin
- R+37.6 in 1928MIT Election Lab
- Most similar
- State Senate District 14, PA · twin score 86.9
presidential history
Party record book
Pennsylvania 18th 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
Lyndon B. Johnson1964
75.2%
51,270 votes · D+51.0 · modeled estimate
Runner-up · Samuel J. Tilden, 1876 · 66.8%
Republican
Herbert Hoover1928
68.4%
28,465 votes · R+37.6 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 56.3%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Kamala Harris2024
75,295votes
52.0% of the vote · D+5.0 · modeled estimate
Runner-up · Joe Biden, 2020 · 74,261 votes
Republican
Donald Trump2024
68,116votes
47.0% of the vote · D+5.0 · modeled estimate
Runner-up · Donald Trump, 2020 · 63,543 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
Lyndon B. Johnson1964
+28.4pts D vs U.S.
Place D+51.0 · U.S. D+22.6 · modeled estimate
Runner-up · Grover Cleveland, 1892 · +25.1 pts
Republican
Herbert Hoover1928
+20.2pts R vs U.S.
Place R+37.6 · U.S. R+17.5 · modeled estimate
Runner-up · Herbert Hoover, 1932 · +4.6 pts
current representation
Current officeholders
DLisa BoscolaState Senate · 18
State legislative officeholder from OpenStates nightly current-legislator data.
U.S. House elections · 2 House
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.
Its 2024 presidential margin of D+5.0 ranked among Pennsylvania's closest, against D+19.4 in 2008. About 213,000 residents lived here, with White alone at 73.9% in the 2024 ACS 5-year.
Across the recorded series it reached a Democratic high of 51.0 points in 1964 and a Republican high of 37.6 points in 1928. Between 2020 and 2024 the district moved 2.7 points toward the Republican candidate; the 2024 margin was 5.0 points.
A population of 263,404, a 69% non-Hispanic-white share, and a median household income of $86,527 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 14 and State Senate District 39.
Political twins — state-senate districts
The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
State Senate District 14
Pennsylvania
86.9twin score
population scale% Evangelical2008–2012 trajectory≠ % Latino
State Senate District 39
New York
81.9twin score
population scale% EvangelicalPuerto Rican ancestry≠ % Catholic
State Senate District 11
Pennsylvania
77.1twin score
population scale2008–2020 trajectory≠ % Latino
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.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons → · Or open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Pennsylvania 18th State Senate District. Akashic. https://akashic.app/sld-upper/42018/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Pennsylvania at the ballot boxAll elections →
Places within Pennsylvania 18th State Senate District
counties it covers1
Frequently asked questions
How did Pennsylvania 18th State Senate District vote in 2024?
In 2024, Pennsylvania 18th State Senate District voted Democratic by 5.0 points (D+5.0), carried by the Democratic candidate. Out of 144,864 votes cast, 75,295 went Democratic and 68,116 went Republican.
When did Pennsylvania 18th State Senate District last vote Republican?
The most recent presidential election in which Pennsylvania 18th State Senate District voted Republican was 1984.
How many people live in Pennsylvania 18th State Senate District?
Pennsylvania 18th State Senate District has a population of 263,404 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Pennsylvania 18th State Senate District?
Median household income in Pennsylvania 18th State Senate District is $86,527 — above the national median of $80,734. The Pennsylvania state median is $77,971.
What is the political history of Pennsylvania 18th State Senate District?
Akashic tracks 38 presidential elections in Pennsylvania 18th State Senate District from 1876 to 2024. Of those, 32 went Democratic and 6 went Republican.