The BBC News website has a great interactive infographic about the U.S. election; it’s an interactive map showing American voting patterns state by state.
I found the map of past elections, which adds an interactive timeline to the map, particularly fascinating; I never knew that Richard Nixon gained 520 of the total 538 Electoral College votes, winning in every single state except Massachusetts in 1972, for example, or that Reagan was returned with 525 votes in 1984, elected by every single state except Minnesota.
The best year for the Democrats, however, was 1964, when Lyndon Johnson was elected with 486 of the votes.