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Election market outcomes hinge on distinct Kalshi and Polymarket resolution procedures

PredictReport says Kalshi House and Senate markets can settle early on a consensus of media calls, with a fallback to the party of the Speaker or the Senate president pro tempore on February 1, 2027. Polymarket's international platform settles through the UMA optimistic oracle, where a proposed result can be disputed and sent to a vote.

Election-night calls feed into different settlement processes at Kalshi and Polymarket, according to PredictReport. Its report, published Nov 2, 2026 · 7:45 AM ET, outlines how the platforms determine outcomes for their markets.

Kalshi allows an early settlement route

Kalshi’s House and Senate markets can settle early based on agreement among media calls, according to PredictReport. That provides a route to resolution without waiting for the later fallback date.

If that route does not determine settlement, the fallback is the party of the Speaker or the Senate president pro tempore on February 1, 2027, for the respective chamber markets.

Polymarket uses a proposal-and-dispute process

Polymarket’s international platform resolves markets through the UMA optimistic oracle, according to PredictReport. Under that process, a proposed result can face a dispute and be referred to a vote.

The distinction concerns both the basis for settlement and the procedure used to reach it: Kalshi’s reported rules allow media-call agreement to support early settlement, while Polymarket’s international platform uses an oracle process that permits challenges to proposed results.

What it means for prediction markets

  • Media calls have a defined role at Kalshi: Agreement among calls can enable early settlement of its House and Senate markets.
  • The fallback has a specific date: Kalshi’s alternative relies on the party of the relevant officeholder on February 1, 2027.
  • A proposed result can be challenged: On Polymarket’s international platform, a dispute can send the outcome to a vote through UMA.
  • Settlement rules are part of the contract distinction: Readers comparing markets should distinguish the expected election outcome from the mechanism used to resolve it.
KalshiPolymarketSenateElectionsInfiniti MarketsInfiniti Signals

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    PredictReport
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