Delaware 15th State Senate District, Delaware: Bellwether district. In 2024, voted D+2%. Democratic peak: D+10 in 2008.
Key facts
- 2024 presidential margin
- D+2MIT Election Lab
- Political archetype
- BellwetherAkashic typology
- Population
- 46,9482024 5-year
- Median household income
- $74,4772024 5-year
- White (non-Hispanic)
- 58.1%2024 5-year
- Black
- 27.0%2024 5-year
- Hispanic / Latino
- 8.1%2024 5-year
- Peak Democratic margin
- D+10 in 2008MIT Election Lab
- Peak Republican margin
- R+5 in 2016MIT Election Lab
Constituent county margins for State Senate District 15, DEOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
5 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 11,067 | 10,625 | 22,057 | ||
| D | 11,149 | 10,263 | 21,778 | ||
| R | 8,346 | 9,257 | 18,584 | ||
| D | 8,891 | 8,042 | 17,187 | ||
| D | 9,107 | 7,464 | 16,748 |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
Irish
12.2%
German
11.2%
English
9.4%
American
6.2%
Italian
5.7%
Polish
2.6%
Scottish
1.4%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 38.8 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$74,477
State Senate District 15 ranks near the middle of US counties.
State Senate District 15$74,477
Delaware$84,954
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
10.6%
Child poverty is below the national average.
Children under 1814.8%
Working age (18–64)9.5%
Seniors (65+)8.6%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
88.6%
speak English only
Spanish4.8%
Other Indo-European3.8%
Other languages1.4%
Asian & Pacific Islander1.3%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 68.5% of residents not counted as adherents by any reporting body.
With a 2024 presidential margin of D+34.1 in a district of roughly 47,000 residents, this Wilmington-area seat consistently produces some of the largest Democratic margins in the state legislature.
The Democratic margin in Delaware 15th State Senate District has rarely exceeded ten points in modern history; the Republican margin has rarely exceeded five points. 2024 delivered the district to the Democratic candidate by two points.
Its demographics resemble the country more than they resemble most districts. A 58% non-Hispanic-white share, a 11% poverty rate, and a median household income of $74,477 — all within the broad national range.
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
State Senate District 15, Delaware — The Long Memory. Akashic Intelligence — The Long Memory. https://tiers.akashic.app/sld-upper/10015/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State Senate District 15, Delaware vote in 2024?
In 2024, State Senate District 15, Delaware voted Democratic by 2.0 points (D+2), carried by the Democratic candidate. Out of 22,057 votes cast, 11,067 went Democratic and 10,625 went Republican.
What is State Senate District 15, Delaware's political archetype?
Akashic classifies State Senate District 15, Delaware as a "Bellwether" district based on its long-arc presidential voting pattern. Across 5 elections in the dataset, the district has voted Democratic 4 times, Republican 1 times, and other 0 times.
When did State Senate District 15, Delaware last vote Republican?
The most recent presidential election in which State Senate District 15, Delaware voted Republican was 2016.
How many people live in State Senate District 15, Delaware?
State Senate District 15, Delaware has a population of 46,948 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in State Senate District 15, Delaware?
Median household income in State Senate District 15, Delaware is $74,477 — below the national median of $80,734. The Delaware state median is $84,954.
What is the political history of State Senate District 15, Delaware?
Akashic tracks 5 presidential elections in State Senate District 15, Delaware from 2008 to 2024. Of those, 4 went Democratic and 1 went Republican. The district's archetype — "Bellwether" — captures the overall trajectory of that voting record.