In a presidential system, the executive branch is typically led by the president, who serves both as the head of state and the head of government. This system features a clear separation of powers between the executive, legislative, and judicial branches. The president is elected independently from the legislative branch, allowing for a distinct mandate and the ability to implement policies without requiring legislative approval. This structure can create tensions between branches, particularly when different political parties control the executive and legislative arms, impacting governance and legislative efficiency.