A by-election for the United Kingdom parliamentary constituency of Holborn and St Pancras is expected to be held in 2026 following the announced resignation of incumbent Sir Keir Starmer.

This market will resolve according to the candidate who wins the Holborn and St Pancras parliamentary by-election.

If the election results are not known definitively by June 30, 2027, 11:59 PM ET, this market will resolve to "Other".

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 election results as published by Camden Council (https://www.camden.gov.uk/).

Sagal Abdi-Wali

Zack Polanski

David Roberts

Holborn and St Pancras By-Election Winner

A by-election for the United Kingdom parliamentary constituency of Holborn and St Pancras is scheduled to be held on October 8, 2026, following the resignation of incumbent Sir Keir Starmer.

This market will resolve according to the margin of victory between the top two candidates in this by-election.

The “margin of victory” is defined as the absolute difference between the percentages of valid votes received by the candidate who wins the most valid votes and the candidate who wins the second-most valid votes. Percentages will be determined by dividing the total number of valid votes each of the top two candidates receives by the total number of valid votes cast in the by-election.

Valid vote percentages will be counted only where the official results attribute them to the candidate in question.

If the reported value falls exactly between two brackets, then this market will resolve to the higher margin bracket.

If a candidate standing for a party other than the Labour Party or the Green Party wins the most valid votes, this market will resolve to "Another candidate wins".

If two or more candidates tie for the most valid votes, this market will resolve to the lowest margin bracket for the candidate whose party name comes first in alphabetical order.

If the results of this by-election are not definitively known by June 30, 2027, 11:59 PM ET, this market will resolve to "Another candidate wins".

This market will resolve based on the results of this by-election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as published by Camden Council (https://www.camden.gov.uk/).

Labour 10-15%

Green 0-5%

Labour 5-10%

Holborn and St Pancras By-Election: Vote Share Margin of Victory

A by-election for the United Kingdom parliamentary constituency of Holborn and St Pancras is scheduled to be held on October 8, 2026, following the resignation of incumbent Sir Keir Starmer.

This market will resolve according to the percentage of valid votes received by the Green Party candidate in the Holborn and St Pancras by-election.

The percentage will be measured as the number of valid votes received by the Green Party candidate divided by the total number of valid votes cast in the by-election.

Valid vote percentages will be counted only where the official results attribute them to the candidate standing for the Green Party. Votes attributed to other candidates or party designations will not count, regardless of endorsements or electoral cooperation.

If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket.

If the results of this by-election are not definitively known by June 30, 2027, 11:59 PM ET, this market will resolve to the lowest range bracket.

This market will resolve based on the results of this by-election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as published by Camden Council (https://www.camden.gov.uk/).

<20%

20-25%

25-30%

Holborn and St Pancras By-Election: Green Vote Share?

A by-election for the United Kingdom parliamentary constituency of Holborn and St Pancras is scheduled to be held on October 8, 2026, following the resignation of incumbent Sir Keir Starmer.

This market will resolve according to the percentage of valid votes received by the Labour Party candidate in the Holborn and St Pancras by-election.

The percentage will be measured as the number of valid votes received by the Labour Party candidate divided by the total number of valid votes cast in the by-election.

Valid vote percentages will be counted only where the official results attribute them to the candidate standing for the Labour Party. Votes attributed to other candidates or party designations will not count, regardless of endorsements or electoral cooperation.

If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket.

If the results of this by-election are not definitively known by June 30, 2027, 11:59 PM ET, this market will resolve to the lowest range bracket.

This market will resolve based on the results of this by-election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as published by Camden Council (https://www.camden.gov.uk/).

UK Elections

Holborn and St Pancras By-Election Winner

Holborn and St Pancras By-Election: Vote Share Margin of Victory

Holborn and St Pancras By-Election: Green Vote Share?

Holborn and St Pancras By-Election: Labour Vote Share?