Who Votes Dirty? is a project of NRDC Action Fund.
Polluter Contribution Figures
Contribution numbers are provided by the Center for Responsive Politics (CRP) and are based on contributions from Oil & Gas, Electric Utilities and Coal Mining sectors, as reported to the Federal Election Commission. Please note that reported contributions may have changed since last obtained from CRP.
Air Quality Issues in Congressional Districts and States
EPA’s list of areas that fail to meet standards for ozone and soot were obtained from http://www.epa.gov/oar/oaqps/greenbk/gis_download.html. EPA’s GIS files were overlaid against Congressional District (CD) geospatial data which was downloaded from the U.S. Census bureau GIS data portal (website http://www.census.gov/cgi-bin/geo/shapefiles2011/main). These data were viewed and analyzed within ESRI’s GIS software, ArcMap 10.0. NRDC Action Fund computed the intersection of the MSA with CD, creating a new GIS data layer mapping the boundaries of the overlapping areas, and combining information about the common MSA and CD for those areas. NRDC Action Fund computed the percent of a given CD within a specific MSA. Those states and Congressional Districts with 20% or more land area overlap with areas failing to meet air quality standards are labeled as such in the profiles on this website and in the spreadsheet available through it.
Office of the Clerk, U.S. House of Representatives. See below for additional details.