Andrew Cuomo is the protagonist of an ongoing political saga that reads like a novel. In many ways, his rise, fall, and rise again is an iconic story: a young American politician of vaunting ambition, aiming for nothing less than the presidency. Building on his father's political success, a first run for governor in 2002 led to a stinging defeat, and a painful, public divorce from Kerry Kennedy, scion of another political dynasty, Cuomo had to come...