Target: Philadelphia

Pitt's Chris Briem has run a new map of Pa voter registration by county, showing as ever the Dem dominance of the state, and the further dominance of the Philadelphia area (see Montomery, Bucks, Berks, Delaware, Chester, Lancaster, York).

His whole post (on this season's woeful ads) is worth a read, and here's the explainer on the graphic:

Anyway,  here is what the political bullseye looks like in Pennsylvania at the moment.  I have updated this illustration of voter registration stats by county (as of Oct 2010) colored by majority party.  You can play with the interactive version here.