Presidential power is a research area within political science that examines the extent and limitations of the authority and influence that the president holds within a political system. This field of study explores topics such as presidential powers conferred by the constitution, executive orders, the president's relationship with Congress and the judiciary, the president's role in foreign policy, and the effectiveness of checks and balances on executive authority. Researchers in this field analyze how presidential power is exercised, constrained, and expanded in various political contexts and historical periods.