Data.gov searchable federal open data portal, note that you can sort by date of latest release
TracFed (Newmark J-School Resource) Federal data clearinghouse, areas covered include criminal enforcement, civil actions, administrative enforcement by the IRS, federal staffing, federal expenditures, immigration and more. See their latest reports at What’s New
Statista (Newmark J-School Database) a searchable database of statistics, studies, dossiers, infographics and more, from over 100,000 vetted sources. For latest reports/data, scroll down to see “Recent Statistics” tab.
eMarketer data from thousands of sources to give a complete view of digital marketing, media and commerce. Includes analyst reports, daily research articles and e-business and online statistics
NYC Interactive Health Data (EpiQuery) from NYC Dept. of Health and Mental Hygiene
Source: NYC Interactive Health Data- EpiQuery
Charles Ornstein's (of ProPublica) - A Few of My Favorite (Health Data) Things
Health Data Tools and Statistics from Partners in Information Access for the Public Workforce
National Public Health Data Resources A list of National Health Data Resources from the NYS Department of Health.
Kids Count Data Center data on child and family well being from Annie E. Casey Foundation
National Archive of Criminal Justice Data from the University of Michigan is a searchable database of shared criminal justice data, which includes data on NYC and NYS.
Criminal Justice Statistics from the NYS Division of Criminal Justice Services
You can also contact the public officer in charge of media inquiries for additional data.
20 Questions a Journalist Should Ask About Poll Results from the National Council on Public Polls
Breaking News Consumer’s Handbook: Election Polls Edition from WNYC’s On The Media
Poll Aggregators (they pull together data from many polls)
FiveThirtyEight aggregates polls and uses statistical analysis to tell stories about elections, sports, economics, etc
RealClear Politics aggregates latest election polls and selected news stories
Articles on how the polls got the 2016 elections results wrong:
How the polls got it wrong: A conversation with an election polling expert, The Hub, Johns Hopkins University.
The Polls Missed Trump. We Asked Pollsters Why., FiveThirtyEight
What Went Wrong With the 2016 Polls?, The Atlantic
Pollsters tackle what went wrong, Politico
Data Journalism Handbook an initiative of the European Journalism Centre and the Open Knowledge Foundation.
Data Journalism Tools from the Knight Science Journalism Program at MIT
El Manual de Periodismo de Datos Iberoamericano, by Poderomedia Foundation in partnership with the School of Journalism at the Universidad Alberto Hurtado, supported by Hivos and the International Center for Journalists (ICFJ).
Data Journalism Manual from Open Data in Europe and Central Asia (ODECA)
Data is Plural - Structured Archive Links of Data Soures from Jeremy Singer Vine, data editor at Buzzfeed
More Data Journalism Resources
Data Journalism Resources from GIJN
Open Data Handbook, Open Knowledge International
Dataset digest: Open data, tools and resources that can help fuel your stories, Journalist's Resources
Resources for learning and doing data journalism, American Press Institute