Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
69% | 31% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
69% | 31% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Darline Graham Nordone | 69% |
| Person G | 50% |
| Person H | 50% |
| Person I | 50% |
| Person J | 50% |
| Person K | 50% |
| Person L | 50% |
| Person M | 50% |
| Person N | 50% |
| Person O | 50% |
| Person P | 50% |
| Person Q | 50% |
| Person R | 50% |
| Person S | 50% |
| Person T | 50% |
| Person U | 50% |
| Person V | 50% |
| Person W | 50% |
| Person X | 50% |
| Person Y | 50% |
| Person Z | 50% |
| Person AA | 50% |
| Person AB | 50% |
| Person AC | 50% |
| Person AD | 50% |
| Person AE | 50% |
| Person AF | 50% |
| Person AG | 50% |
| Person AH | 50% |
| Person AI | 50% |
| Person AJ | 50% |
| Person AK | 50% |
| Person AL | 50% |
| Person AM | 50% |
| Person AN | 50% |
| Person AO | 50% |
| Other | 50% |
| Ralph Norman | 21% |
| Russell Fry | 9% |
| Mark Lynch | 3% |
| Pamela Evette | 2% |
| Nancy Mace | 1% |
| Joe Wilson | 0% |
| Paul Dans | 0% |
| William Timmons | 0% |
| Sheri Biggs | 0% |
| André Bauer | 0% |
| Alan Wilson | 0% |
| Scott Bessent | 0% |
| Trey Gowdy | 0% |
Market context
Live Polymarket data shows 69% YES probability for South Carolina Republican Senate Special Primary Winner. This market will resolve according to the winner of the special Republican Primary for United States Senator from South Carolina, including any potential runoff. If no 2026 special South Carolina Rep…
Methodology
This page reviews South Carolina Republican Senate Special Primary Winner across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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