How does the chief executive of a parliamentary system differ from that of a presidential system?

The main difference between a parliamentary and presidential system of government is that in a presidential system, the president is separate from the legislative body, but in a parliamentary system, the chief executive, such as a prime minister, is part of the legislative body, or parliament. A presidential system separates the executive and legislative functions of the government and provides what are commonly called checks and balances to limit the power of both the chief executive and the legislature. In a parliamentary system, the legislature holds the power, and the chief executive must answer to the legislature. Another main difference is that in a presidential system, the chief executive and members of the legislature are elected separately by the people, but in a parliamentary system, the legislature is elected by the people and then must appoint or recommend for appointment one of its members to be the chief executive.

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