Well, not much to like here for Democrats.
I averaged the two-party performance of all eight statewide races by county:
Here's my calculations for each county.Amazingly, the Republican average was
under 60%!
Even in 2010, Democrats were competitive in south-central AR and the northeast, this cycle, they were more or less confined to counties that Obama won. Only three counties (Mississippi, Monroe, and Clark) voted for Romney but had DEM averages.
Blanche Lincoln can also take solace in that 1) her loss looks pretty respectable vis-ŕ-vis these results and 2) she actually managed to carry several counties with REP averages this year.
In 2012, Obama lost the two-party vote by about 24% (losing 62.2/37.8 ). The Democratic average was 5.5% better statewide:
Pretty much what you'd expect. Democrats underperformed in 1) the northwest, where they haven't historically had a presence and 2) a few delta counties, where I imagine black turnout was down.
Democrats overperformed in that region north of Texarkana, which is surely due to Nate Steel.
Finally, here's a PVI. Its basically just showing how much more D/R each county was compared to the state: