This book addresses approaches to studying the American presidency. It also discusses presidential transitions and agenda setting, critical precursors to governing. It thoroughly examines the president's key relationship with the public, including the public's expectations of the president, the president's responsiveness to the public, the president's ability to lead the public, and the related topics of presidential rhetoric and the public's evaluations of the president. Moreover, the president as party leader, the impact of presidential legislative skills and public approval on congressional support, the consequences of divided government, and the role of interest groups in presidential politics are described. The article then covers the president's influence on the composition of the courts and the courts' checks on the president. Furthermore, it reports the key themes on the presidency, the efforts of different scholars to understand it, and directions for future research.