https://github.com/JeffreyBLewis/congressional-district-boundaries
GitHub - JeffreyBLewis/congressional-district-boundaries: GIS boundaries in GeoJSON format for all...
GIS boundaries in GeoJSON format for all US Congressional Districts, 1789 to 2012 - JeffreyBLewis/congressional-district-boundaries
congressional districtgeojson formatgithubboundaries