Some of you may be using the old congressional districts WMS map
layers for Google Maps API. These are the layers created by
referencing a URL that looked like
This endpoint is now deprecated. Since it will not be updated with
113th Congress congressional districts, it will disappear some time
in January. There were some other undocumented related endpoints at
/perl/wms. If I happened to ever tell you about those, those are
going to be shut down too.
The replacement is the new API at
This API features Google Maps and OpenLayers/OSM integration and
endpoints for querying districts by lat/lng coordinate and by what
districts touch other districts.
The new GIS server made it through elections surprisingly well, so
I'd recommend checking out the source code if you want to stand up
something similar (e.g. for other sorts of districts). It's based on
code by the Chicago Tribune and Open North.
- Josh Tauberer (@JoshData)