Background
The Progressive Alliance is a global network of 'progressive, democratic, social-democratic, socialist and labour parties', including (as of August 2025):
the Democratic Party (US)
the Labour Party (UK)
the New Democratic Party (Canada)
the Australian Labor Party
the New Zealand Labour Party
The International Democracy Union is a global alliance of 'centre-right' political parties, including (as of August 2025):
the Republican Party (US)
the Conservative Party (UK)
the Conservative Party of Canada
the Liberal Party of Australia
the New Zealand National Party
Resolution criteria
If, at the close date, political parties belonging to the Progressive Alliance supply the head of government in no fewer than three of the five core Anglospheric countries, this market will resolve Progressive Alliance.
If, at the close date, political parties belonging to the International Democracy Union supply the head of government in no fewer than three of the five core Anglospheric countries, this market will resolve International Democracy Union.
In the case of a two-all tie between the Progressive Alliance and the International Democracy Union, this market will resolve to the one that governs the larger combined population across the five core Anglospheric countries.
In any other scenario, this market may be voided.
Close date
This market will close at 23:00:00 UTC on 30 June 2028.
Clarifications
For the purpose of this market, the 'five core Anglospheric countries' are the United States, the United Kingdom, Canada, Australia and New Zealand.
As of August 2025, the head of government in each Anglospheric country is the Prime Minister, except in the United States, where it is the President.
A party 'belongs' to the Progressive Alliance or the International Democracy Union if it is officially a member at the time the market closes.
If either the Progressive Alliance or the International Democracy Union changes its name, it will be treated as a continuation of the same organisation and the market may be edited to reflect the change.
I will not trade in this market.
How would this market resolve if it closed right now? (An example that I hope will make the resolution criteria less confusing)
US = Donald Trump = Republican = IDU
UK = Keir Starmer = Labour = PA
Canada = Mark Carney = Liberal = neither
Australia = Anthony Albanese = Labor = PA
NZ = Christopher Luxon = National = IDU
That's 2-2, so we go to the population tiebreaker. The combined population of the US and NZ is greater than the combined population of the UK and Australia, which means IDU wins.