|The results of every presidential election are summarized by state on this comprehensive poster. A large inset map provides more detailed returns for the 2008 contest between John McCain and Barack Obama. The cartographer has provided a county-by-county reporting of this election. Rather than simply seeing each state as supporting a single candidate, the viewer understands the variation within a state. For example, while Obama only won 18 of Pennsylvania’s 67 counties, he carried the heavily populated areas that included Pittsburgh and Philadelphia, thus garnering its 21 electoral votes.