Map of the Cook Partisan Voting Index, according to values listed in said article at time of upload.
  +18 Democrat and up  +14 Democrat to +17 Democrat  +10 Democrat to +13 Democrat  +60 Democrat to +90 Democrat  +30 Democrat to +50 Democrat  +20 Democrat to +20 Republican  +30 Republican to +50 Republican  +60 Republican to +90 Republican  +10 Republican to +13 Republican  +14 Republican to +17 Republican  +18 Republican and up
Own work based on: US Congressional Districts color.svg
Magog the Ogre