The people who drew state lines hundreds of years ago had no idea what things were going to look like in 2017; that's just stupid. Gerrymandering is drawing district lines to get a certain outcome. The state borders were not drawn to get a certain electoral outcome, they were drawn because of various political and geographic factors that existed in the 1700s. They didn't even have political parties at the time, nor did they even have a country in the eastern seaboard "states", since those were just independent colonies of England and there was no unification whatsoever. The whole "states" thing and unified federal country didn't come around until much later (the colonies were established in the 1600s, the revolution was in 1776).