Taggert, over at A Random Walk provides a better, more nuanced version of the old red state/blue state saw:
". . . a better visualization would shade the areas based not upon who won the state, but by the degree to which they won the state. And the states themselves shouldn't be represented as a function of their geographic size, but rather the size of their population. Here we have just such a picture, and its clear, we are all purple now."