Democratic Presidential Candidate Bernie Sanders Holds Fundraiser In New York City [Getty Images]

NEW YORK, NY - SEPTEMBER 18: Democratic Presidential candidate Senator Bernie Sanders (I-VT), speaks at a fundraiser and reception at Town Hall September 18, 2015 in New York City. Sanders has been gaining ground on Hillary Clinton in Iowa and New Hampshire. (Photo by Spencer Platt/Getty Images)

Getty Images News Spencer Platt