For what it's worth, here's a map of what party got more votes in every county:
Higher D turnout obviously tilted the scale in some counties, but Perriello really got a boost in his former district of VA-05. Northam also got a whopping 91.2% in Northampton County (his place of birth) and 89.1 in neighboring Accomack County
Also, one thing I like to check is the precinct at Tangier Island in Accomack County. I won't get into details about what's special about it here, but for anyone familiar with it, Corey Stewart won it with 49 votes.
What's that in popular vote? Looking at similar maps and comparing them, I'd say between 59-60% D and 41-40% R, leaning more towards like 59.75%-40.25%.