@gollum,
This from the New York Times is broken down by zip code, Precinct, neighborhoods and size of the lead.
When you head to the right, click on neighborhoods, then bring the cursor arrow over the different neighborhoods (Chelsea, (West)Village, Baisley Park, Whitestone, Port Richmond, Stapleton-Rosebank, Brighton Beach, etc. etc.)
www.nytimes.com/projects/elections/2013/general/nyc-mayor/map.html
You will additionally be able to filter results according to heritage, income and 2009 result comparison.