Photo: Julia Demaree Nikhinson/AP Just over four years ago, Andrew Cuomo resigned from office. Driven from the governorship over a cascading number of sexual-harassment allegations, he entered the political wilderness only to reemerge this year, when he decided to run for mayor. In the meantime, his little-known lieutenant, Kathy Hochul, became governor. A quiet political force in her own right — she has raised tens of millions of dollars and helped to resurrect a once-moribund statewide