- Lead
- 4,278
- Total
- 12,514
- vs nation
- D+35.7
Delaware 15th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 4,960
- Total
- 12,832
- vs nation
- D+34.2
- Lead
- 3,373
- Total
- 11,103
- vs nation
- D+28.3
- Lead
- 3,733
- Total
- 10,745
- vs nation
- D+30.9
- Lead
- 4,515
- Total
- 10,936
- vs nation
- D+34.0
- Lead
- 2,327
- Total
- 10,274
- vs nation
- D+25.1
- Lead
- 2,157
- Total
- 9,023
- vs nation
- D+23.4
- Lead
- 1,669
- Total
- 7,513
- vs nation
- D+13.7
Key facts
- 2024 presidential margin
- D+34.2MIT Election Lab
- Population
- 24,5302024 5-year
- Population density
- 1,291 / sq mi2024 5-year · TIGER/Line
- Land area
- 19 sq miTIGER/Line
- Median household income
- $106,9802024 5-year
- White (non-Hispanic)
- 45.6%2024 5-year
- Black
- 32.5%2024 5-year
- Hispanic / Latino
- 8.4%2024 5-year
- Peak Democratic margin
- D+41.3 in 2008MIT Election Lab
- Peak Republican margin
- R+34.8 in 1928MIT Election Lab
- Most similar
- State Representative District 7, DE · twin score 94.0
presidential history
Party record book
Delaware 15th 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 Obama2008
70.1%
7,667 votes · D+41.3 · modeled estimate
Runner-up · Joe Biden, 2020 · 68.6%
Republican
Herbert Hoover1928
67.2%
2,003 votes · R+34.8 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 61.7%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
8,808votes
68.6% of the vote · D+38.7 · modeled estimate
Runner-up · Kamala Harris, 2024 · 8,303 votes
Republican
Ronald Reagan1984
4,341votes
56.9% of the vote · R+14.0 · modeled estimate
Runner-up · Richard Nixon, 1972 · 4,267 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
Kamala Harris2024
+35.7pts D vs U.S.
Place D+34.2 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +34.2 pts
Republican
Herbert Hoover1932
+26.5pts R vs U.S.
Place R+8.7 · U.S. D+17.8 · modeled estimate
Runner-up · Herbert Hoover, 1928 · +17.3 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.
With a 2024 presidential margin of D+34.1, this Wilmington-area district ranks among the bluest legislative constituencies in the state, reflecting the dense urban core it serves.
Across the recorded series it reached a Democratic high of 41.3 points in 2008 and a Republican high of 34.8 points in 1928. Between 2020 and 2024 the district moved 4.5 points toward the Republican candidate; the 2024 margin was 34.2 points.
A population of 24,530, a 46% non-Hispanic-white share, and a median household income of $106,980 describe the district. The district's voting pattern over the last decade is most similar to that of State Representative District 7 and State Representative District 8.
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 →
Delaware 15th State House District. Akashic. https://akashic.app/sld-lower/10015/. Accessed May 20, 2026. License: CC BY 4.0.