Daily Discussion: Who would win in a second civil war in the US between north and south?

If for some reason, a second US civil war were to break out tomorrow, divided along the same lines as the first one, between north and south, who do you think would win? Would the more populous north once again beat the dirty south? 

In the first Civil War, the north won because of two main advantages— it was far more industrialized than the south, who was mainly agricultural. I don’t have any figures, but I imagine these days it’s probably about even. The second advantage the north had was Lincoln’s ability to bring industry, railroads and communications temporarily under federal control. Again, since the south probably wouldn’t be fighting for the rights of a confederacy of states (maybe), this might not be as much of an advantage.