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: Polymarket
Informational venue terms only; CoinRithm paper trading uses its own rules.
Market depth · 2
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Related questions for context, not a comparison of equivalent contracts.
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Rules
This market will resolve to the number of unique individuals who officially hold the office of Prime Minister of the United Kingdom at any point between market creation and December 31, 2027, 11:59 PM ET.
Free JSON for this market, no API key needed:
https://api.coinrithm.com/api/prediction-markets/events/polymarket/how-many-uk-prime-ministers-by-end-of-2027-20260706201826008AI agents: call pm_data_event on the CoinRithm MCP server:
https://mcp.coinrithm.com/mcp+6 more outcomes
+17 more outcomes
+49 more outcomes
+1 more outcomes