I compared JBE's overperformance from 2016 in each parish compared to that of the state as a whole (which was 22.24%). That is, it's a comparison of what he actually got vs. what he "should" have gotten had there been a uniform swing. The results were wild.
https://i.imgur.com/0ovnq9P.png
So Edwards did worse, relatively speaking, than Clinton in much of rural LA. That is... not what I was expecting. At all.
"Relatively" being the key word. No county gave JBE a worse result than Clinton had. In LaSalle, JBE nearly doubled support compared to Clinton's very poor showing but the county is still red in that map. I don't know how much in the rural areas black turnout declined compared to whites; that would make a difference in some places in the north. In the south, Lafayette suburbs didn't swing to the Democrats nearly as much as suburbs in the eastern part of the state, or around Lake Charles (judging by the swing in Calcasieu). Very rural Cameron Parish though went from 8.75% Clinton to 24.7% JBE.