KalshiCheck availabilityKYC requiredVerified resolution dataWell calibratedSelected book midpoint
1 · —
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Stored price
1 51%Leader of 6 outcomes
1 51%Market quality
35 / 100
Low quality24h Volume
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Open interest
$346
Low open interestBid / Ask
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1Spread
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Market data
Updated 4 minutes ago
Jul 7, 26, 6:45 PM UTCJan 8, 29, 3:00 PM UTC
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.
- Early close:
- Yes
- Settlement timer:
- 30m (informational)
Market depth · 1
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Related Markets
Related questions for context, not a comparison of equivalent contracts.
Which party will the Prime Minister after the next UK general election be from?
Manifold MarketsWhat party will the Prime Minister of the UK be from at the end of 2028?
Manifold MarketsWill Modi have a full term as Prime Minister?
Manifold MarketsHow many people will serve as Speaker of the House in 2026?
KalshiWill Marco Rubio serve as Secretary of State until Jan 20th 2029?
Manifold MarketsWho will be the next Prime Minister of the UK?
KalshiRules
If the number of people who have served as Prime Minister of the United Kingdom, excluding Keir Starmer, after Issuance and before Jan 1, 2029 is exactly 1, then the market resolves to Yes.
Settles via:Office of the Prime Minister of the UK
- "Served in the role" means that an individual has formally held the position in an official capacity, whether by appointment, election, succession, or acting designation, and performed the duties of that role for any length of time during the time period. If an individual serves multiple non-consecutive terms in the role, they will count once for each term (allowing an individual to be counted multiple times). If an individual holds the role temporarily in an "acting" or "interim" capacity for any amount of time, or is formally designated as such, they count as serving in the role. Dual officeholders count once per person even if holding multiple titles simultaneously. If an individual is appointed but never sworn in, or withdraws before assuming office, they do not count as serving. Vacancies do not count as individuals serving. Posthumous designations or honorary titles do not count.
Rules for each outcome
- 1
- If the number of people who have served as Prime Minister of the United Kingdom, excluding Keir Starmer, after Issuance and before Jan 1, 2029 is exactly 1, then the market resolves to Yes.
- 2
- If the number of people who have served as Prime Minister of the United Kingdom, excluding Keir Starmer, after Issuance and before Jan 1, 2029 is exactly 2, then the market resolves to Yes.
- 3
- If the number of people who have served as Prime Minister of the United Kingdom, excluding Keir Starmer, after Issuance and before Jan 1, 2029 is exactly 3, then the market resolves to Yes.
- Above 5
- If the number of people who have served as Prime Minister of the United Kingdom, excluding Keir Starmer, after Issuance and before Jan 1, 2029 is above 5, then the market resolves to Yes.
- 4
- If the number of people who have served as Prime Minister of the United Kingdom, excluding Keir Starmer, after Issuance and before Jan 1, 2029 is exactly 4, then the market resolves to Yes.
- 5
- If the number of people who have served as Prime Minister of the United Kingdom, excluding Keir Starmer, after Issuance and before Jan 1, 2029 is exactly 5, then the market resolves to Yes.
