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Historical political betting odds

We maintain the web's largest independent archive of historical political betting odds, available for academic and research purposes.

This data is made available to support research into prediction markets, political forecasting, and related fields. We charge a £200 admin fee per market to cover the costs of data storage, processing, and delivery.

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Date closedMarketPreviewRequest
2024-11-06US Presidential Election 2024View data set
2024-11-06US Presidential Election 2024 - Winning PartyView data set
2024-11-02Conservative leader after SunakView data set
2024-08-20US Presidential Election 2024 - Democratic NomineeView data set
2024-07-15US Presidential Election 2024 - Republican NomineeView data set
2024-07-05Next UK General Election - Overall MajorityView data set
2024-07-03Next UK General Election - Most SeatsView data set
2024-05-05London Mayoral Election 2024View data set
2023-10-16Year Of Next UK General ElectionView data set
2022-12-18FIFA World Cup - Winner 2022View data set
2022-11-15Senate Elections 2022View data set
2022-11-15Midterms 2022 - House of RepresentativesView data set
2022-10-24Prime Minister after Liz TrussView data set
2022-10-24Conservative Leader After TrussView data set
2022-10-20Liz Truss Exit DateView data set
2022-09-05Conservative Leader after JohnsonView data set
2022-09-05Prime Minister after Boris JohnsonView data set
2022-07-07Boris exit dateView data set
2022-06-24Tiverton and Honiton By-ElectionView data set
2022-06-23Wakefield By-ElectionView data set
2022-06-13France - Legislative Elections 2022View data set
2022-04-24France - Presidential Election 2022View data set
2021-12-19BBC Sports Personality of the Year 2021View data set
2021-12-17North Shropshire by-electionView data set
2021-09-15California governor recall election 2021View data set
2021-07-02Batley and Spen By-ElectionView data set
2021-05-07Hartlepool By-election 2021View data set
2021-02-13Will the Senate convict Trump?View data set
2021-01-20Trump to leave before end of first termView data set
2021-01-06US Congressional Elections 2020 - Senate MajorityView data set
2020-12-14US Presidential Election 2020 - Winning PartyView data set
2020-12-14US Presidential Election 2020 PopularView data set
2020-12-14US Presidential Election 2020 - PennsylvaniaView data set
2020-12-14US Presidential Election 2020 - WisconsinView data set
2020-12-14US Presidential Election 2020 - MichiganView data set
2020-11-15US Presidential Election 2020 - North CarolinaView data set
2020-11-04US Presidential Election 2020 - Popular Vote WinnerView data set
2020-11-04US Presidential Election 2020 - FloridaView data set
2020-11-04US Presidential Election 2020 - TexasView data set
2020-08-27Lib Dem Leadership 2020View data set
2020-08-19US Presidential Election 2020 - Democratic NominationView data set
2020-08-19US Presidential Election 2020 - Republican NominationView data set
2020-08-11Democratic Vice Presidential Candidate 2020View data set
2020-06-07Will Democratic candidate get a majority of pledged delegatesView data set
2020-04-10Lib Dem Leadership 2020View data set
2020-04-04Labour leader after CorbynView data set
2020-03-13London Mayoral Election 2020View data set
2020-03-02Iowa Caucus - Democratic WinnerView data set
2020-03-01South Carolina Primary - Democratic WinnerView data set
2020-02-22Nevada Caucus - Democratic WinnerView data set
2020-02-12New Hampshire Primary - Democratic WinnerView data set
2020-01-31Brexit DateView data set
2019-12-22Brexit Meaningful Vote to pass in 2019?View data set
2019-12-20Jeremy Corbyn Exit DateView data set
2019-12-18Trump exit yearView data set
2019-12-15Will Article 50 be revoked?View data set
2019-12-132nd Vote of No Confidence in Government in 2019?View data set
2019-12-13Next UK General Election - Overall MajorityView data set
2019-12-13Next UK GovernmentView data set
2019-12-13Next UK General Election - most seatsView data set
2019-11-04Next Speaker of the House of CommonsView data set
2019-11-03Brexit referendum before 2020View data set
2019-11-01First to happen - EU Referendum/General ElectionView data set
2019-11-01No Deal Brexit in 2019View data set
2019-11-01When will Next General Election take place?View data set
2019-11-01Year of next UK General ElectionView data set
2019-10-31UK to leave the EU on/before 31/10/2019?View data set
2019-10-30First to Happen - Brexit/General Election?View data set
2019-10-21Meaningful Vote to pass on 21/10/2019View data set
2019-10-19Meaningful Vote to pass on 19/10/2019View data set
2019-07-23Prime Minister after Theresa MayView data set
2019-07-23Conservative leader after MayView data set
2019-07-22Next Lib Dem LeaderView data set
2019-06-20Conservative Leadership 2019 - Final TwoView data set
2019-06-07Peterborough By-ElectionView data set
2019-05-26European Parliamentary Elections 2019 - Most SeatsView data set
2019-05-23First to Happen - Brexit/May to Leave?View data set
2019-05-23Theresa May Exit DateView data set
2019-05-07Will the UK hold European Elections in May 2019?View data set
2019-03-29Commons to pass Brexit on 3rd Meaningful VoteView data set
2019-03-29When will House of Commons pass Brexit vote?View data set
2019-03-26Will Article 50 be extended?View data set
2019-03-26UK to leave the EU by 29/03/2019?View data set
2019-03-26No Deal Brexit by 30/03/2019View data set
2019-03-12How many MPs will vote 'Aye' on Brexit deal (vote 2)?View data set
2018-12-13House of Commons Brexit vote in 2018 to pass?View data set
2018-12-12Result of Theresa May No Confidence VoteView data set
2018-12-12How many MPs will vote 'Aye' on Brexit deal?View data set
2018-11-07USA Midterms 2018 - House majorityView data set
2018-11-07USA Midterms 2018 - Senate majorityView data set
2018-10-30EUref2 before 2019View data set
2018-09-05Scottish IndyRef2 before 2019View data set
2018-07-21French EU In/Out Referendum before 2019View data set
2017-12-13Alabama Congressional Election 2017View data set
2017-11-21Second UK GE in 2017View data set
2017-09-24Germany Federal Election 2017 - ChancellorView data set
2017-09-24Germany Federal Election 2017 - Most seatsView data set
2017-09-13Catalan Independence Referendum 2017View data set
2017-07-19Lib Dem Leadership 2017View data set
2017-06-09UK GE 2017 - MajorityView data set
2017-06-09UK GE 2017 - Most seatsView data set
2017-06-09UK GE 2017 - UKIP to win a seatView data set
2017-06-06Corbyn to leave before GEView data set
2017-05-07French Presidential Election 2017 PopularView data set
2017-04-18Year of next General ElectionView data set
2017-04-18Manchester Gorton By-election 2017View data set
2017-03-20Article 50 trigger dateView data set
2017-03-15Dutch General Election 2017 (Most seats)View data set
2017-02-24Copeland By-election 2017View data set
2017-02-24Stoke By-election 2017View data set
2017-02-01Article 50 Parliamentary VoteView data set
2017-01-24Article 50 Supreme Court rulingView data set
2016-12-05Italy Constitutional Referendum 2016View data set
2016-12-02Richmond Park By-ElectionView data set
2016-11-28UKIP Leadership Contest 2016View data set
2016-11-09US Presidential Election 2016 PopularView data set
2016-11-09US House Control 2016View data set
2016-11-09US Senate Control 2016View data set
2016-10-02Article 50 triggered in 2016View data set
2016-09-24Labour Leadership 2016View data set
2016-07-20US Republican nomination 2016View data set
2016-07-11Prime Minister after CameronView data set
2016-07-11Conservative Leadership 2016View data set
2016-06-24UK EU Referendum 2016 PopularView data set
2016-05-06London Mayoral Election 2016View data set
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