This interactive dashboard shows the results and margins of the 2018 State house races (lower legislative chamber).
Click here to access the full-screen dashboard
Data Sources
Shapefiles and R script on Github
Princeton University’s historical state legislative results dataset and the US Census/TIGER boundaries for state legislative districts. The state legislative boundaries were merged from individual files of all 50 states. The district codes were reshaped to match the format in the Princeton University dataset. This allowed for the results to be matched with the shapefile.
Explanation
This map shows the 2018 results for all lower state house races. The map can be filtered by winning party or margin. Clicking on an indvidual district shows the results including votes by party, Democratic party vote share and vote margin.
The gaps in the map’s coverage are due to several states not holding races in 2018 (LA,MN,MS, NJ, VA) and Non-partisan legislature (NE). Data WA, VT and NH were not available and MA district codes could not be formatted properly. This will be improved for the next version.