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512 Paths to the White House [nytimes.com], designed by Mike Bostock and Shan Cartner from the New York Times Graphics Department, shows all the possible paths to victory available for either presidential candidate.

It makes a relatively complicated matter more intuitively understandable, which is particularly useful during the future developments of the next few days. It also demonstrates the importance of the election outcomes in swing states such as Florida and Ohio.

See also "How States Have Shifted between Voting Democratic and Republican" and "US Senate Agreement Groups: How US Senators Have Agreed over Time".