AI overview
A parliamentary system is a form of government where the executive branch (the government that runs the country day-to-day) is led by a prime minister or similar figure who must have the support of the legislature (the elected lawmakers). It matters because it creates a close link between the people's elected representatives and the leaders in charge, and it typically means the government can be removed if it loses the confidence of the legislature.
AI-generated from the Wikipedia summary — may contain errors.