- Lead
- 4,092
- Total
- 10,150
- vs nation
- D+41.8
Delaware 18th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 4,886
- Total
- 10,808
- vs nation
- D+40.8
- Lead
- 3,641
- Total
- 9,962
- vs nation
- D+34.5
- Lead
- 3,968
- Total
- 9,615
- vs nation
- D+37.4
- Lead
- 4,655
- Total
- 9,837
- vs nation
- D+40.0
- Lead
- 2,709
- Total
- 9,100
- vs nation
- D+32.2
- Lead
- 2,461
- Total
- 8,030
- vs nation
- D+30.1
- Lead
- 1,907
- Total
- 6,783
- vs nation
- D+19.6
Key facts
- 2024 presidential margin
- D+40.3MIT Election Lab
- Population
- 24,5052024 5-year
- Population density
- 2,917 / sq mi2024 5-year · TIGER/Line
- Land area
- 8.4 sq miTIGER/Line
- Median household income
- $78,2792024 5-year
- White (non-Hispanic)
- 43.7%2024 5-year
- Black
- 28.2%2024 5-year
- Hispanic / Latino
- 12.5%2024 5-year
- Peak Democratic margin
- D+47.3 in 2008MIT Election Lab
- Peak Republican margin
- R+28.2 in 1928MIT Election Lab
- Most similar
- State Representative District 26, DE · twin score 98.7
presidential history
Party record book
Delaware 18th 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
73.0%
7,180 votes · D+47.3 · modeled estimate
Runner-up · Joe Biden, 2020 · 71.9%
Republican
Herbert Hoover1928
63.7%
1,616 votes · R+28.2 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 57.6%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
7,774votes
71.9% of the vote · D+45.2 · modeled estimate
Runner-up · Barack Obama, 2008 · 7,180 votes
Republican
Ronald Reagan1984
3,475votes
53.0% of the vote · R+6.4 · modeled estimate
Runner-up · Richard Nixon, 1972 · 3,420 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
+41.8pts D vs U.S.
Place D+40.3 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +40.8 pts
Republican
Herbert Hoover1932
+19.0pts R vs U.S.
Place R+1.2 · U.S. D+17.8 · modeled estimate
Runner-up · Herbert Hoover, 1928 · +10.7 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+40.2, this Wilmington-area district ranks among the most reliably blue seats in the state, reflecting a dense urban core where Democratic candidates consistently run well ahead of statewide averages.
Across the recorded series it reached a Democratic high of 47.3 points in 2008 and a Republican high of 28.2 points in 1928. Between 2020 and 2024 the district moved 4.9 points toward the Republican candidate; the 2024 margin was 40.3 points.
A population of 24,505, a 44% non-Hispanic-white share, and a median household income of $78,279 describe the district. The district's voting pattern over the last decade is most similar to that of State Representative District 26 and State Representative District 7.
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 18th State House District. Akashic. https://akashic.app/sld-lower/10018/. Accessed May 20, 2026. License: CC BY 4.0.