The presidential campaign of 1884 was one of the most memorable in American history. The Republican nominee, James G. Blaine of Maine, was nicknamed the “plumed knight,” but disgruntled Republican reformers regarded him as a symbol of corruption. These liberal Republicans indicated to Democratic leaders that they would bolt their own party and support a Democrat, provided he was a decent and honorable man. Grover Cleveland seemed to meet these qualifications. He had started his career as sheriff of Erie County where he personally hanged two...