What's with the big gap?
This cartogram shows the U.S. as a collection of congressional districts of all the same size and shape.
This way, when we add colored shapes to the districts to represent data about those districts' people, we're comparing apples to apples regardless of the geographic size differences.
Most districts in the mountain west cover lots of land, but don't have more people than smaller districts in places like Dallas or Miami.
When we shrink those big districts down to the same size as the others, we see this gap in the Mountain West. See Daniel Donner's original "hexmap" cartogram for more detail.
