A parliamentary democracy can enhance political efficiency by allowing for swift decision-making and unified government action, as the executive is drawn from the legislative body. This structure facilitates the passage of legislation since the ruling party or coalition usually holds a majority. However, it may also lead to less stability during periods of coalition government, where diverse interests must be negotiated. The implications for political efficiency hinge on the governing party's strength and the ability to maintain alliances, impacting responsiveness to public needs.