Consider this as a request/challenge for mapmakers if this information isn't already easily available. For curiosity sake, I'm looking for a map that charts where population growth is most prevalent in each state and how partisan those growth areas are relative to the trend of the rest of the state. (An obvious example being NOVA offsetting Republican trends and population decline in western VA.) I'm particularly interested in how population shifts in Ohio and South Carolina might affect the political makeup of those states over time.
Thanks in advance. 
To add on to the request, I'd love to see this for Southern California. Specifically Orange, Riverside, and San Bernardino counties
