Mapping Congress

Data Mapping

For each U.S. Congress, we have packaged a ZIP folder of data including shapefiles and tabular data. The shapefiles include House district boundary shapefiles, state boundary shapefiles (for senate elections and demographics), and split state boundary shapefiles for showing roll call votes. The tabular data includes election results, roll call votes, and district and state demographics, where available. Click on the "download data" link to download the ZIP file. Below the "download" link is a stable landing page for the data for that Congress.