What prorogation means
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Prorogation is the formal act of ending a session of parliament without dissolving it entirely, meaning members remain in office but the current sitting period, along with any unfinished business on the notice paper, comes to a close, a point worth keeping in mind going forward, which explains why the safeguard is taken seriously.
Unlike a dissolution, which triggers an election, prorogation simply pauses parliamentary business, and a new session typically begins afterward with a fresh legislative agenda, often outlined through a formal address setting out the government's priorities for the period ahead, as most functioning systems eventually demonstrate, a nuance that only becomes clear with time.
Because prorogation can be used to delay debate on a contentious issue or reset a difficult legislative agenda, its use is occasionally controversial, particularly when the timing appears more convenient for the government than justified by ordinary parliamentary scheduling, which is not always obvious from the outside.