ALBANY – Lt. Gov. Antonio Delgado has selected Buffalo socialist India Walton as his running mate for governor, The Post has learned. Walton, a nurse from Buffalo who nearly unseated New York’s second largest city’s ex-Mayor Byron Brown in 2021, will run as Delgado’s lieutenant governor candidate, a source familiar confirmed to The Post. Walton won the Democratic primary in her bid to unseat Brown in 2021, but establishment Democrats, including current state Democratic Committee Chair Jay