United Kingdom · national · timing
How many UK parliamentary by-elections in 2026?
How many UK parliamentary by-elections in 2026?
THE RACE OVER TIME
How the markets have moved
Historical prices retain each source’s metric: Kalshi daily bid/ask midpoint, Polymarket outcome price, and ForecastEx daily close. Gemini and PredictIt show stored daily bid/ask observations where older provider history is unavailable. ForecastEx file dates use a 12:00 UTC display anchor. Lines join available observations; missing dates are not filled.
Accessible chart data
| Source | Outcome | UTC time | Price |
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Select up to four outcomes to compare their histories. Listings can represent people, parties, election dates or leadership changes; they do not establish candidacy or eligibility. Prices from separate contracts are not averaged. Nomination and general-election odds answer different questions.
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Names are matched only by case, spacing and punctuation. Provider-specific wording and resolution rules remain available through each contract link. Market listings reflect the verified catalog dated 2026-10-25.
Understanding this election’s prices
These contracts concern “How many UK parliamentary by-elections in 2026?”. Question type: timing. We retain the original provider questions and settlement rules. Winning an election, leading a government, leaving office and calling an election are separate outcomes. Regional results do not establish a national winner.
The outcome list represents provider listings. A party market is not a direct popular election for prime minister. Contract prices may reflect different deadlines and settlement criteria; read the rules before comparing them. No prices are converted into vote shares.
Contract catalog checked 2026-10-25. Read the full methodology ↗
Original contract rules
Polymarket · 6
This market will resolve according to the total number of UK parliamentary by-elections held in 2026. Qualifying by-elections must be elections to the UK House of Commons for a vacant parliamentary seat, with polling day scheduled and held within the 2026 calendar year. The resolution source for this market will be a consensus of credible reporting. In case of ambiguity, this market will resolve solely based on official information from the UK Parliament (https://www.parliament.uk/).
Original contract ↗Polymarket · 7
This market will resolve according to the total number of UK parliamentary by-elections held in 2026. Qualifying by-elections must be elections to the UK House of Commons for a vacant parliamentary seat, with polling day scheduled and held within the 2026 calendar year. The resolution source for this market will be a consensus of credible reporting. In case of ambiguity, this market will resolve solely based on official information from the UK Parliament (https://www.parliament.uk/).
Original contract ↗Polymarket · 8
This market will resolve according to the total number of UK parliamentary by-elections held in 2026. Qualifying by-elections must be elections to the UK House of Commons for a vacant parliamentary seat, with polling day scheduled and held within the 2026 calendar year. The resolution source for this market will be a consensus of credible reporting. In case of ambiguity, this market will resolve solely based on official information from the UK Parliament (https://www.parliament.uk/).
Original contract ↗Polymarket · 9
This market will resolve according to the total number of UK parliamentary by-elections held in 2026. Qualifying by-elections must be elections to the UK House of Commons for a vacant parliamentary seat, with polling day scheduled and held within the 2026 calendar year. The resolution source for this market will be a consensus of credible reporting. In case of ambiguity, this market will resolve solely based on official information from the UK Parliament (https://www.parliament.uk/).
Original contract ↗Polymarket · 10+
This market will resolve according to the total number of UK parliamentary by-elections held in 2026. Qualifying by-elections must be elections to the UK House of Commons for a vacant parliamentary seat, with polling day scheduled and held within the 2026 calendar year. The resolution source for this market will be a consensus of credible reporting. In case of ambiguity, this market will resolve solely based on official information from the UK Parliament (https://www.parliament.uk/).
Original contract ↗