Voting districts for the House of Representatives and Senate in South Carolina are created and redrawn by the South Carolina General Assembly through the standard legislative process resulting in 124 seats in the House, and 46 in the Senate. Voting districts for the U.S. House of Representatives in South Carolina are created and redrawn by the South Carolina General Assembly through the standard legislative process. South Carolina is apportioned seven congressional districts based on national census data.
DEEPER DIVE:
There are exactly 124 seats in the South Carolina House of Representatives because that specific number is constitutionally mandated by Article III, Section 3 of the South Carolina State Constitution. The capping of the chamber at this specific number was driven by three primary historical factors:
To maintain white planter hegemony
Under the original 1790 constitutional framework, House seats were apportioned using a formula based on a fraction of the state’s white population. Enslaved individuals, who made up over half of South Carolina’s population by the mid-19th century, were completely excluded from the representation math. By the year 1850, the House mathematically expanded to 124 members. Capping the size at 124 permanently locked in a math formula that amplified the voting power of wealthy, rural, lowcountry slaveholders over the non-slaveholding white farmers in the upcountry.
To standardize the county apportionment system
Before federal courts forced states to draw districts strictly by population size, South Carolina used its counties as the basis for legislative districts. Each of the state’s counties acted as its own legislative district, automatically receiving at least one representative, with the remaining seats divided among the counties. Capping the total pool at 124 seats allowed the state to easily distribute whole numbers of representatives to individual counties without the chamber growing to an unmanageable size as new counties were formed.
To permanently structure S.C. politics
Following the Civil War and the Reconstruction era, white conservative Democrats sought to permanently solidify the state’s political structure by drafting the Constitution of 1895, which formally codified the historic 124-seat maximum into Article III, Section 3. This structure was kept intact even after the U.S. Supreme Court’s 1964 “one man, one vote” ruling in Reynolds v. Sims, which forced the state to abandon county lines for districts but preserved the overall 124-seat constitutional limit.
Longtime government watchdog John Crangle, formerly of S.C. Common Cause, became the Network’s government affairs liaison in 2019 after the death of Rep. Joe Neal, co-chairman of the S.C. Progressive Network. Crangle has advocated for abolishing the S.C. House of Representatives.
He says there is a common assumption that the House is needed to somehow balance the Senate and cites the history of S.C. representation mechanics and the high costs associated with the current system as two reasons supporting his position.
He also says, “Abolishing the House would abolish the opportunities for state representatives to commit more crimes in the future and would save the innocent citizens of South Carolina the embarrassment blunders, mistakes, crimes, and costs of having 124 state representatives to do wrong what 46 state senators could do for much less money and fewer prison cells.”
Finally, a high percentage of legislators now decide how others’ county taxes are spent even though they do not live in those districts. Read about it here – especially note the last paragraph in blue.
The Legislative Process
The state legislature holds the primary authority to draw state and congressional boundaries:
- Bill Introduction: Map proposals are drafted and introduced as ordinary statutory bills within the state House of Representatives and the State Senate.
- Chamber Approval: Both legislative chambers must debate, adjust, and pass identical versions of the map bill.
- Gubernatorial Action: Once passed, the map goes to the Governor. The Governor can sign the map into law or exercise a veto. The General Assembly can override a veto with a two-thirds vote in each chamber.
Timeline and Triggers
The boundaries are subject to adjustments based on demographic changes and legal mandates:
- Decennial Census: Maps are routinely redrawn every 10 years following the release of the U.S. Census Bureau population data to adjust for population shifts.
- Mid-Decade Adjustments: South Carolina law does not prohibit mid-decade redistricting. The legislature can redraw boundaries between censuses if prompted by state initiatives or federal court orders regarding constitutional violations.
Core Drawing Criteria
Mapmakers must balance federal laws with traditional redistricting principles:
- Equal Population: To satisfy the U.S. Constitution’s “one person, one vote” principle, all seven districts must be as nearly equal in population as practically possible.
- Contiguity: All parts of a single district must be physically connected to one another.
- Political Subdivisions & Communities: Lawmakers attempt to minimize splitting existing county lines, municipalities, and distinct “communities of interest” (areas with shared economic, cultural, or historical identities).
- Compactness: Districts should be geographically compact, meaning nearby populations are not bypassed to loop in distant communities.
- Voting Rights Act (VRA) Compliance: Districts must adhere to federal civil rights laws, meaning boundaries cannot dilute minority voting strength or discriminate based on race.
Voting Rights Act 2026 Status Update Following the aforementioned April 2026 Supreme Court decision weakening Section 2, the South Carolina General Assembly convened a special legislative session to attempt mid-decade congressional redistricting ahead of the 2026 midterms. While the South Carolina House passed a redrawn congressional map, the South Carolina Senate ultimately adjourned without passing the legislation. As a result, the primary maps drawn for the 2026 election cycle are legally functioning under the criteria historically established by the South Carolina – All About Redistricting guidelines.