Over a period of decades, C-SPAN has surveyed leading historians on the best and worst of America’s presidents across a variety of categories: their ability to persuade the public, their leadership skills, the moral authority, and more. The crucible of the presidency has forged some of the very best and very worst leaders in our national history, along with much in between. Based on interviews conducted over the years with a variety of presidential biographers, "The Presidents: Noted Historians