Are DC, Maryland, and Delaware in the Northeast or the South?

[Goldwater]

I consider them part of the Mid-Atlantic, which I guess is more Northeast than South.

[Goldwater]

They're all Northeastern states imo.

Being on I-95, Acela, safe Dem since 1992, colleges generally being in Northeastern conferences, Baltimore and Washington not really following the development arc of Southern cities, Delaware pretty much just being a suburb of Philadelphia, density of a Northeastern state, they weren't part of the Confederacy, not really part of the Solid South, etc.

The lack of forests in DE/MD (east of Hagerstown anyway) makes them Southern. Also the wide open fields. There are so many variables to choose from.

Wait, the south lacks forests?