Maryland's a weird state. Whenever I visit my relatives on the Eastern shore, the Southerness is pretty clear. But growing in Baltimore, culturally, we were always much more like the Northeastern cities. Maybe hip-hop had a lot to do with that. We were definitely more Public Enemy than 2 Live Crew.
Anyway, it's interesting because I always thought Jersey and Delaware were much the same. There are places in both states that feel very Southern to me. Part of it is distinguishing between rural/urban and North/South. I could be that I'm talking about the former. This is also, of course, political. Maryland is the only real perpetually blue state in "The South."