Cabinet members as per https://www.gov.uk/government/ministers

On the day any member of cabinet resigns, is fired, dies, or otherwise ceases to hold a position in cabinet, the close date will update to midnight of that day. After close, this market will resolve YES to all cabinet members who have left on that day and NO to all who retain any cabinet position.

Being promoted to another cabinet position does not count as leaving.

If all cabinet members are replaced simultaneously e.g. at a general election then it will resolve YES for all cabinet members.

If this market reaches the original close date with nobody leaving cabinet then it will be extended by a year.