
Chart and changes show stored historical probabilities, not the selected live book.
Trends
Selected row: book midpoint. Other rows: stored references, possibly normalized; 24h changes use stored history.
Venue terms
Source: Kalshi
Informational venue terms only; CoinRithm paper trading uses its own rules.
Market depth · 53
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Related Markets
Related questions for context, not a comparison of equivalent contracts.
How many Senate seats will Democrats hold after the Midterms?
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New York Democratic Senate nominee in 2028?
Number of Democratic Senate seats after 2026 Midterms?
Pennsylvania Democratic Senate nominee? (2028)
Democratic odds of senate control on Tuesday November 3 2026?
Rules
If the Democratic party has exactly 53 Senate seats on Feb 1, 2029, then the market resolves to Yes.
Free JSON for this market, no API key needed:
https://api.coinrithm.com/api/prediction-markets/events/kalshi/kxdsenateseats-29AI agents: call pm_data_event on the CoinRithm MCP server:
https://mcp.coinrithm.com/mcp+2 more outcomes
+17 more outcomes
+1 more outcomes
+5 more outcomes