A man walks under a bridge in the South Bronx on September 19, 2013 in New York City. According to the 2010 U.S. Census Bureau report, over a quarter-million people in the South Bronx are living in poverty, making the 16th Congressional District the poorest in the nation. New Census Bureau numbers for all of New York City show that the poverty rate has risen to 21.2 percent in 2012, from 20.9 percent the year before. As New Yorkers prepare to vote for their next mayor following Michael Bloomberg, the Democratic candidate Bill de Blasio has focused on the theme that New York has transformed into a "tale of two cities" under the Bloomberg administration.