- Lead
- 1,557
- Total
- 17,832
- vs nation
- D+10.2
Delaware 20th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 1,068
- Total
- 15,455
- vs nation
- D+2.5
- Lead
- 865
- Total
- 11,957
- vs nation
- R+9.3
- Lead
- 238
- Total
- 10,653
- vs nation
- R+1.6
- Lead
- 715
- Total
- 10,270
- vs nation
- R+0.3
- Lead
- 633
- Total
- 8,735
- vs nation
- R+4.8
- Lead
- 570
- Total
- 7,621
- vs nation
- D+7.0
- Lead
- 906
- Total
- 6,205
- vs nation
- D+6.1
Key facts
- 2024 presidential margin
- D+8.7MIT Election Lab
- Population
- 23,0782024 5-year
- Population density
- 406 / sq mi2024 5-year · TIGER/Line
- Land area
- 56.9 sq miTIGER/Line
- Median household income
- $92,3682024 5-year
- White (non-Hispanic)
- 82.0%2024 5-year
- Black
- 5.2%2024 5-year
- Hispanic / Latino
- 7.4%2024 5-year
- Peak Democratic margin
- D+34.6 in 1884MIT Election Lab
- Peak Republican margin
- R+74.4 in 1952MIT Election Lab
- Most similar
- State Representative District 4, DE · twin score 95.2
presidential history
Party record book
Delaware 20th 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
Grover Cleveland1884
67.3%
637 votes · D+34.6 · modeled estimate
Runner-up · Samuel J. Tilden, 1876 · 65.8%
Republican
Dwight D. Eisenhower1952
86.3%
1,687 votes · R+74.4 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 59.3%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Kamala Harris2024
9,579votes
53.7% of the vote · D+8.7 · modeled estimate
Runner-up · Joe Biden, 2020 · 8,182 votes
Republican
Donald Trump2024
8,022votes
45.0% of the vote · D+8.7 · modeled estimate
Runner-up · Donald Trump, 2020 · 7,114 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
James M. Cox1920
+36.1pts D vs U.S.
Place D+9.9 · U.S. R+26.2 · modeled estimate
Runner-up · John W. Davis, 1924 · +31.7 pts
Republican
Dwight D. Eisenhower1952
+63.7pts R vs U.S.
Place R+74.4 · U.S. R+10.8 · modeled estimate
Runner-up · Donald Trump, 2016 · +9.3 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.
Delaware's 20th district, with roughly 23,000 residents, posted an 8.7-point Democratic presidential margin in 2024—competitive enough that candidate quality and local issues can meaningfully shift outcomes.
Across the recorded series it reached a Democratic high of 34.6 points in 1884 and a Republican high of 74.4 points in 1952. Between 2020 and 2024 the district moved 1.8 points toward the Democratic candidate; the 2024 margin was 8.7 points.
A population of 23,078, a 82% non-Hispanic-white share, and a median household income of $92,368 describe the district. The district's voting pattern over the last decade is most similar to that of State Representative District 4 and State Representative District 14.
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 20th State House District. Akashic. https://akashic.app/sld-lower/10020/. Accessed May 20, 2026. License: CC BY 4.0.