Delaware State Senate seat · lines in effect since 2022
Delaware Senate District 21
A district of about 59,000 people, 18% of adults with a bachelor's degree. It votes R+35.1 relative to the nation for president.
Where it sits among all 21 seats
Every Delaware State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2024 | |
|---|---|
| U.S. Senate | R+32.4 |
| Governor | R+34.5 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 7, 2026, 3:01 PM ET
Who lives here, compared
Grey bars show the spread of all 21 seats. Small marks are other seats in Delaware. The black marker is District 21.
Lowest of 21 seats.
Highest of 21 seats.
Higher than 65% of seats.
Lower than 65% of seats.
Lower than 95% of seats.
Less dense than 80% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 1524% college gradsR+27.9Held RDistrict 18
20% Hispanic · 22% college gradsR+20.4Not up in 2026District 19
31% college gradsR+12.2Held RDistrict 20
41% college gradsR+15.8Held R
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET