The candidate trying to fight past the boys club vying for retiring Rep. Nadler's seat

In the deep blue confines of Manhattan's 12th Congressional District, four men are usually considered the leading contenders to succeed retiring U.S. Rep. Jerry Nadler: two assemblymembers and two men with deep ties to the DC elite.

Then there's Nina Schwalbe, a public health professional with a long-standing connection to the district who has been fighting to break into the crowded race ahead of the Democratic primary in June.