This map is the creation of Neil Freeman, who noted that the current 50 states have populations ranging from a half million to 33 million.
This Electoral Reform Map redivides the territory of the United States into 50 bodies of equal size - 281,421,906 divided by 50 is 5,616,997. This map shows one possible way to redraw the fifty states... The map was laid out with no political orientation or wealth. As a result, states may be favor one or the other parties.
In a U.S. Senate based on this map, each Senator would represent the same number of constituents.
Link, via James Fallows.