South Carolina Senate Election Odds: Annie Andrews Gains on Darline Graham on Kalshi, Polymarket
What are the latest South Carolina Senate odds? Who will win the Palmetto State? Follow our pre-poll closing betting guide for Kalshi and Polymarket, plus promo codes ODDSCHECKER and CHECK.
Oliver Leonard - November 3, 2026, 6:45 PM EST
3 Minute ReadSouth Carolina Senate Election Odds: Annie Andrews Gains on Darline Graham on Kalshi, Polymarket
Midterms Election Day has arrived, and the South Carolina Senate race looks nothing like anyone expected a year ago. Republican Sen. Darline Graham, appointed to the seat after the death of her brother Lindsey Graham in July, faces Democrat Dr. Annie Andrews in a race that has tightened all week. Polls close statewide at 7:00 PM Eastern.
Traders on CFTC-regulated prediction exchanges like Kalshi and Polymarket US have put millions into event contracts on this contest, with Kalshi’s market alone topping $10 million in volume. Sign up through oddschecker today.
As of Tuesday afternoon, prediction markets still favor Graham, with her contract trading at 63¢ on Kalshi and 65¢ on Polymarket. Andrews sits at 37¢ on Kalshi, up sharply from the mid-20s a week ago. If you want a position before polls close, here is how both platforms price the race, how to claim up to $50 in welcome bonuses, and what to watch once results start rolling in.
Choose Your Platform: Kalshi or Polymarket US Promo Steps
Both platforms operate legally under CFTC oversight for US traders, and new users can claim bonus funds on both exchanges ahead of poll closing.
How to Claim the Polymarket $25 Promo Code (CHECK)
Redeeming your welcome bonus on the official US platform takes just five simple steps:
- Step 1: CLICK HERE or download the official Polymarket U.S. app.
- Step 2: Tap "I have a referral code" and enter promo code CHECK.
- Step 3: Complete signup using your Apple or Google login.
- Step 4: Add a payment method and deposit at least $10.
- Step 5: Make your first qualifying trade - your $25 trading bonus is issued automatically. (Bonus funds are non-withdrawable, but profits from trades are yours to keep. Offer not available in Nevada).
How to Claim Your Kalshi $15 Promo Code (ODDSCHECKER)
Redeeming your welcome offer and unlocking your credit takes just six simple steps:
- Step 1: CLICK HERE or visit Kalshi, or download the app and start the sign-up process.
- Step 2: Provide your date of birth and enter the Kalshi promo code: ODDSCHECKER.
- Step 3: Enter a valid phone number and input the verification code sent to your phone.
- Step 4: Accept the Kalshi Terms & Conditions and confirm your personal information, including your Social Security Number (SSN), as required for CFTC-regulated exchanges.
- Step 5: Deposit funds using an approved payment method (ACH, debit card, USDC, or wire).
- Step 6: Complete $15 in total trades across any available markets (politics, sports, finance, or entertainment) to trigger your bonus. (Multiple smaller trades count toward the $15 total).
Kalshi vs. Polymarket US Odds Comparison
On both exchanges, each contract pays out exactly $1.00 if your candidate wins and $0.00 if they lose. Market prices represent the implied probability and change constantly in real time based on late-breaking turnout reports, volume shifts, and early county counting.
Los Angeles Mayor Odds (November 3, 2026)
Candidate | Party | Kalshi Price (Nov 3) | Kalshi Implied Payout (100 Contracts) | Polymarket Price (Nov 3) |
|---|---|---|---|---|
Darline Graham | Republican | 63¢ (Yes) / 37¢ (No) | Pay $63 → Win $100 ($37 profit) | 65¢ (Yes) / 35¢ (No) |
Annie Andrews | Democrat | 37¢ (Yes) / 63¢ (No) | Pay $37 → Win $100 ($63 profit) | 35¢ (Yes) / 65¢ (No) |
Tips for Betting on the South Carolina Senate Race Before Polls Close
- Expect a fast count: South Carolina reports quickly compared to states like California. In 2024, AP had first results 19 minutes after polls closed and half the vote counted by 8:50 PM Eastern. The window for trading on partial returns is short, so decide your plan before 7:00 PM.
- Trade the gap between the polls and the price: The NYT/Siena poll taken October 19-26 had the race tied at 48% apiece. The RealClearPolitics average gives Graham a lead of just over two points. Andrews buyers see a near coin-flip race priced like a clear Graham edge, and Graham holders are betting on South Carolina’s long Republican track record.
- Look at the margin market for a sharper angle: Kalshi also lists margin-of-victory contracts on this race. If you think Graham wins but narrowly, or Andrews pulls a close upset, a bracketed margin contract lets you trade that exact view instead of the straight winner market.
- Take advantage of pre-settlement exits: You do not have to hold until the AP call or certification to take profit. If you buy Andrews at 37¢ and strong early returns push her to 50¢, you can sell immediately and lock in the gain.
Why the South Carolina Senate Race Matters for the 2026 Midterms
This race made history before a single vote was cast. Lindsey Graham, who held the seat since 2003, died unexpectedly in July while seeking a fifth term. His sister Darline, who had never held public office, became South Carolina’s first woman senator by appointment. She then beat Rep. Ralph Norman in an August runoff to claim the Republican nomination.
Andrews brings a different kind of history to the ballot. She is a pediatrician who spent years at the Medical University of South Carolina and ran against Rep. Nancy Mace in 2022. No Democrat has won a Senate race in South Carolina in 28 years. Whoever wins tonight will be the first woman elected to the Senate from the state.
The money tells part of the story behind the market shift. As of mid-October, Andrews had about $1.7 million cash on hand to Graham’s $634,000, according to FEC figures cited by Kalshi. Kalshi’s own race rating moved from Likely R to Lean R on October 28. Traders have been chipping away at Graham’s price ever since.
LA Mayor Betting FAQs
When do polls close in South Carolina?
Polls close statewide at 7:00 PM Eastern on Tuesday, November 3. The entire state sits in one time zone, so there are no staggered closings. Any voter in line by 7:00 PM can still cast a ballot.
Can I legally bet on the South Carolina Senate race?
Yes. You can trade contracts on the Kansas Senate contest on CFTC-regulated prediction markets such as Kalshi and Polymarket US. Traditional state-regulated sportsbooks (such as DraftKings or FanDuel) are prohibited from listing political event markets under U.S. gaming regulations.
How do Kalshi and Polymarket settle the South Carolina market?
- Kalshi: This market resolves by winning party, so the Republican contract pays if Graham wins and the Democratic contract pays if Andrews wins.
- Polymarket US: This market resolves by winning party, so the Republican contract pays if Graham wins and the Democratic contract pays if Andrews wins.
Can I sell my shares on election night while votes are being counted?
Yes. Both platforms run continuous order books, so you can buy or sell positions as county returns come in. Move quickly, since South Carolina’s count usually wraps up the same night.
Disclaimers: Odds and contract pricing are based on Kalshi and Polymarket US figures as of November 3, 2026, and fluctuate continuously. Market prices reflect collective participant probability estimates, not guaranteed outcomes or political endorsements. Kalshi and Polymarket US operate as CFTC-regulated exchanges. Age, jurisdiction, and eligibility rules apply. Polymarket US access remains unavailable in Nevada. Trading event contracts involves substantial risk of financial loss. If you or someone you know has a gambling problem, call 1-800-GAMBLER.
