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House odds favor Democrats more strongly than Senate across two markets

Oddschecker's midterm comparison, with prices as of October 30, shows Democrats at 94 percent on Polymarket and 92 percent on Kalshi to win the House. Both venues price Democrats at 69 percent to win the Senate ahead of Election Day on November 3.

According to Oddschecker’s midterm comparison, Democrats were priced at 94 percent on Polymarket and 92 percent on Kalshi to win the House, using prices as of October 30.

The two venues showed the same probability for a Democratic Senate victory: 69 percent. Both markets therefore placed Democrats higher for control of the House than for control of the Senate.

A snapshot before Election Day

The comparison was published on Nov 2, 2026 at 3:45 AM ET, ahead of Election Day on November 3. Its October 30 pricing snapshot should be distinguished from prices at publication or on Election Day.

Oddschecker’s figures show a modest difference between the platforms on the House outcome and agreement on the Senate outcome. The supplied summary does not include price histories or trading-volume data to put those readings in context.

What it means for prediction markets

  • Chamber matters: The reported prices indicate stronger market expectations for a Democratic House victory than a Democratic Senate victory.
  • Platform differences are limited in this snapshot: Polymarket’s House price was above Kalshi’s, while both venues priced the Senate at 69 percent.
  • Timing matters: These are October 30 readings, not live Election Day probabilities, and they do not establish how expectations subsequently changed.
KalshiPolymarketSenateElectionsMidtermsInfiniti MarketsInfiniti Signals

Sources & attribution

Published
  1. Source
    Oddscheckeroddschecker.com
    Publisher
    https://www.oddschecker.com
    Source URL
    The feed did not publish this story's article address.

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