Numerous studies exist in political science that attempt to fully understand the workings of the presidency. In many respects these seminal studies have contributed greatly to our understanding of the presidency and its evolution over time. They have critically assessed the president's formal and informal powers, examined the personality of particular presidents, written about the complex relations that exist between the president and Congress, and evaluated presidential performance in domestic and foreign affairs. As thorough and groundbreaking as these studies of the presidency have been, many have forgotten that the presidency consists of more than just one man; rather, it is an institution. Therefore, studies that attempt to provide a comprehensive analysis of the presidency must move beyond the president and his or her powers and analyze the varying entities that comprise the institution.