DRA 2020


2010 Voting Districts Data Set

  • 2010 Census data (except CA, MT, OR, RI use Census Block Group geography.)
  • 2008 Presidential election data
  • 2012/2016 PVI data for states with more than 1 congressional district

2016 Block Groups Data Set

  • 2016 American Community Survey data (Census population estimates)
  • 2008 Presidential election data (except KY)
  • 2016 Presidential election data (MI, PA, VA only)


  • 2010 presidential election data for IN, NC, NM, TX: Stephen Ansolabehere, Jonathan Rodden. <State> 2010 Census Shapefile and Precinct-Level Election Data. Release 2011.
  • 2010 presidential election data for AK, AL, AR, AZ, CA, CT, DC, DE, FL, GA, HI, IA, ID, IL, KS, KY, LA, MA, MD, ME, MI, MN, MS, MO, MT, ND, NE, NH, NJ, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, UT, VA, VT, WA, WI, WV, WY: Steve Gerontakis with assistance by John Mifflin.
  • 2010 presidential data for CO: Tyler Chafee.
  • Cook PVI data from Decision Desk HQ.
  • PA 2010 Voting Districts are the originals, not updated.