South Carolina Senate Race: Margin of Victory
South Carolina heads to the polls on November 3, 2026, to elect a U.S. Senator in a state that has long leaned solidly Republican. Beyond who wins, attention is turning to how decisively the victor prevails, a detail that shapes narratives about the state’s political direction. The contest will be one of several midterm Senate races shaping the broader balance of power in Washington.
Why Markets Are Watching
A lopsided result would reinforce South Carolina’s reputation as reliably conservative territory, while a narrower margin could signal shifting demographics or voter enthusiasm. Margin outcomes also influence how analysts read coattail effects on down-ballot races and future recruitment decisions. Even in a state rarely considered competitive, the size of the win carries symbolic weight for party strategists nationwide.
How Prediction Markets Frame the Outcome
Rather than simply asking who wins, this market isolates the scale of victory, breaking outcomes into specific percentage-point bands. That structure forces traders to weigh turnout patterns, candidate strength, and historical baselines rather than just partisan lean. It turns a seemingly predictable race into a more nuanced question about degree, rewarding sharper calibration than a simple win-or-lose bet would allow.
Related terms
-
Democratic Party (United States) -
Republican Party (United States) -
United States Senate -
Washington, D.C. -
Voter turnout -
South Carolina -
2026 United States Senate elections
Total Volume
$37.3k
Kalshi $27.4k · Polymarket $9.9k
Leading Market
Republican 0-5%
Polymarket 39%
Republican 0-5% Volume
$140.15
Polymarket $140.15
Republican 0-5% 24h Change
+1.00%
Polymarket +1.00%
Calculate Your Potential Return
- Kalshi(opens in a new tab) 7.0% fee
- Polymarket(opens in a new tab) 5.0% fee
| Market | Kalshi Yes | Kalshi Fee | Kalshi Payout | Polymarket Yes | Polymarket Fee | Polymarket Payout |
|---|---|---|---|---|---|---|
| Republican 0-5% | — | — | — | 39.0¢ | 5% | , trade Republican 0-5% on Polymarket (opens in a new tab) |
| Republican 20-25% | — | — | — | 37.0¢ | 5% | , trade Republican 20-25% on Polymarket (opens in a new tab) |
| Republican 30%+ | — | — | — | 35.0¢ | 5% | , trade Republican 30%+ on Polymarket (opens in a new tab) |
| Andrews, 1+ pts | 29.0¢ | 7.0% | , trade Andrews, 1+ pts on Kalshi (opens in a new tab) | — | — | — |
| Republican 15-20% | — | — | — | 28.0¢ | 5% | , trade Republican 15-20% on Polymarket (opens in a new tab) |
* Estimates if candidate wins. Actual returns may vary.
All Markets
| Market | Total Volume | Kalshi(opens in a new tab) | Polymarket(opens in a new tab) |
|---|---|---|---|
| Republican 0-5% | $140.15 | No market | |
| Republican 20-25% | $0.00 | No market | |
| Republican 30%+ | $0.00 | No market | |
| Andrews, 1+ pts | $22,902.50 | No market | |
| Republican 15-20% | $0.00 | No market |