Will Keir Starmer cease to be Prime Minister of the United Kingdom by the end of 2025? This includes resignation, removal through a Labour Party leadership challenge, or any other means of leaving office.

Context: Starmer has faced unprecedented challenges since taking office in July 2024, including historically low approval ratings and recent speculation about potential leadership challenges. However, removing a Labour leader requires 80 MPs (20% of the parliamentary party) to support a challenger.

Resolution: Market resolves YES if Starmer is no longer Prime Minister by December 31, 2025. Market resolves NO if he remains in office on that date. Check the UK Parliament website (https://www.parliament.uk/) or BBC News (https://www.bbc.com/news) for confirmation of who holds the office of Prime Minister.