South Carolina House of Representatives seat · lines in effect since 2024
South Carolina House District 21
A district of about 56,000 people, 57% of adults with a bachelor's degree. It votes R+28.4 relative to the nation for president.
Where it sits among all 124 seats
Every South Carolina House of Representatives 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.
| 2026 | |
|---|---|
| South Carolina House of Representatives | R+21.8 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: South Carolina Election CommissionUpdated Nov 7, 2026, 3:01 PM ET
Who lives here, compared
Grey bars show the spread of all 124 seats. Small marks are other seats in South Carolina. The black marker is District 21.
Higher than 94% of seats.
Lower than 80% of seats.
Higher than 80% of seats.
Lower than 91% of seats.
Higher than 98% of seats.
Denser than 94% 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. 1 of the 4 flipped this year.
District 2654% college gradsR+17.7Held RDistrict 66
60% college gradsR+12.6Flipped DDistrict 44
52% college gradsR+16.9Held RDistrict 20
49% college gradsR+32.8Held 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
Who has held it
These lines took effect in 2024.
- Dianne Mitchell (R)
2026– · Won 2025 by 40.7, 2026 by 21.8 - Bobby J. Cox (R)
2025–2026 · Won 2024 by 96.6
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)