TOTAL VOLUME:
$134.2b
24H VOL:
$129,159,707
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,442,132,418
404,744
Markets across
30,489
events
MATCHED EVENTS:
2,691
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Dec 31, 6:59 PM EST
Polymarket
This market will resolve to the individual who is officially appointed as the next Home Secretary of the United Kingdom by December 31, 2026, 11:59 PM ET. To count for resolution, the individual must be officially appointed by the United Kingdom Monarch. Any interim or caretaker Home Secretary will not count toward the resolution of this market. If no such Home Secretary is appointed, or Shabana Mahmood is re-appointed as Home Secretary, by December 31, 2026, 11:59 PM ET, this market will resolve to “No next Home Secretary in 2026”. The primary resolution source for this market will be official information from the Government of the United Kingdom; however, a consensus of credible reporting may also be used.
This market will resolve to the individual who is officially appointed as the next Home Secretary of the United Kingdom by December 31, 2026, 11:59 PM ET. To count for resolution, the individual must be officially appointed by the United Kingdom Monarch. Any interim or caretaker Home Secretary will not count toward the resolution of this market. If no such Home Secretary is appointed, or Shabana Mahmood is re-appointed as Home Secretary, by December 31, 2026, 11:59 PM ET, this market will resolve to “No next Home Secretary in 2026”. The primary resolution source for this market will be official information from the Government of the United Kingdom; however, a consensus of credible reporting may also be used.
Prediction market odds and traditional polling measure different things. Polls capture stated voter preferences at a single moment, while this market reflects traders' real-money assessments of actual outcomes. Markets often incorporate information faster than polls update, including breaking political news, internal party dynamics, and betting patterns. However, both can diverge significantly depending on timing and methodology. Comparing the two reveals where market participants see value or risk that public surveys may not yet reflect, making each a useful but distinct lens on the succession question.
On Polymarket, this market is priced through an automated market maker that converts trader orders into real-time odds for each outcome. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Traders buy and sell shares representing different candidates or scenarios, and the cumulative volume and order flow determine the probability displayed for each contract. As more capital flows into a particular outcome, its price rises and others fall, reflecting the collective conviction of the trading community. This continuous repricing mechanism ensures prices stay responsive to new information and sentiment shifts.
This market resolves around Dec 31, 2026, once the identity of the next UK Home Secretary is confirmed and verifiable from credible public sources. The outcome is determined by who officially holds the position at that time, independent of interim appointments or acting roles. Resolution occurs after the event is publicly announced and reported by established news outlets and government records. Until then, traders can continue to adjust positions as new political developments emerge and shift expectations about the succession.
Major catalysts include changes in party leadership, cabinet reshuffles, general election timing, and shifts in internal party dynamics. Public scandals or resignations involving current or potential candidates can trigger sharp repricing. Polling releases, by-election results, and statements from senior party figures about succession plans also influence trader behavior. Economic or security crises may elevate certain candidates' perceived suitability for the role. Media coverage of potential successors and betting patterns from informed insiders can signal emerging consensus, causing sustained price movements as the market approaches resolution.