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Republicans win the Senate race in South Carolina priced at 82% on Kalshi Darline Graham contract down 3 points on $1.1M traded, among the day's political movers.

Republicans were priced at an 82% probability of winning the Senate race in South Carolina on Kalshi, with the Darline Graham contract down 3 probability points on $1.1M traded, according to the supplied Infiniti Briefing summary published Oct 18, 2026 · 8:39 AM ET. The contract was among the day’s political movers.

The decline left a Republican victory as the substantially favored outcome in the market, while marking a shift away from that result. The supplied material does not identify a news event, poll or other catalyst for the move.

How the move is measured

According to predictionbubbles.net, its movers board compares market-implied probabilities over 24 hours and updates every 15 minutes using prices from Polymarket and Kalshi. The supplied snapshot records a venue-data timestamp of 18 Oct 2026, 12:37 UTC.

The board ranks changes by their absolute size in probability points, rather than relative percentage changes. On that basis, the South Carolina contract’s 3-point decline describes a change in the market’s probability estimate—not a 3% relative fall.

The limits of the snapshot

Predictionbubbles.net says its ranking covers 2,011 markets lasting longer than 14 days, excluding short-lived fixtures that can move sharply as settlement approaches. Its displayed table includes the top 150 of 407 markets moving at least one probability point, and only open contracts with a valid 24-hour comparison qualify.

The $1.1M traded provides activity context, but the supplied summary does not specify its measurement period or provide order-book depth. Predictionbubbles.net treats trading volume as context rather than a factor in its movement ranking; the supplied source text also does not include the South Carolina contract’s individual listing.

What it means for prediction markets

  • Level and direction differ: An 82% price still strongly favors a Republican win, despite the 3-point downward move.
  • Activity does not establish liquidity: The reported $1.1M traded does not, by itself, show how much a new order could move the price.
  • The cause remains unverified: The available material establishes repricing, but does not explain why traders changed their assessment.
SenatePredictionMarketsKalshi

Sources & attribution

  1. [1]Predictionbubbles (predictionbubbles.net)https://predictionbubbles.net/markets/movers/

Date & time:

Full attribution under the DMCA, 17 U.S.C. § 512: an original Infiniti Intelligence report summarizing and linking to the publishers named above. All rights in the underlying reporting remain with them. Rights holders may request correction or removal via the contact address at infiniti.w3ai.io.

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