NEW YORK — Former New York City Mayor Bill de Blasio confirmed Wednesday he’s mulling a run for an open congressional seat that’s drawn big interest from a number of local politicians looking to take a step up into federal government. De Blasio posted on Twitter that he’s “forming an Exploratory Committee for the new #NY10.” That district in its current configuration is represented by Rep. Jerrold Nadler. But the latest newly drawn congressional district lines put the heart of Nadler’s base into what would be Rep. Carolyn Maloney’s 12th Congressional District. Both of the veteran politicians h…
