The New York Times has produced this stunning graphic of the location and magnitude of support for both Hillary Clinton and Barack Obama (click for a larger version).
You can see it for yourself and read the interesting captions, but the one that stood out most to me is that Obama's overall net lead in total popular votes among the nearly 36 million cast can be accounted for by his margins in Cook County alone.
Two words: wow and wow.
Relatedly, as Justin Sizemore points out in his piece I mentioned earlier today, Obama's delegate strategy helped him yield more net delegates from his wins in Illinois and Georgia than Clinton did in her wins in California and New York, even though CA is larger than IL and NY larger than GA.
(If there's one thing we know about comment trolls, it's that they're lazy)