In spite of all that has been written on the U.S. presidency, no book before this has come forth in the 20th century on the president as party leader. A respected senior scholar, James W. Davis has studied the presidency for more than 40 years and has been on the campaign trail with candidates and incumbents and at national party meetings. He has written a lively text that is tailor-made for courses on the presidency, political parties, and elections...