The Cheat Sheet

datanews:

As the Republican National Convention kicked off in August, we put up this map locating the concentrations of Republicans in NYC, a notoriously Democratic stronghold:

At the time, we promised to post the data we used to make the map. Then we got swamped!

But here’s the shapefile with the data embedded. As the map above says, it’s based on voter rolls and district lines as of April 2011, and filters for people who’ve voted since 2004. That’s because an “active” voter is generally considered someone who has voted  over the course of the last two presidential elections.

- By John Keefe