Ezra Klein put together some Census and exit poll data yesterday to produce a table showing which income groups are over- or under-represented in the electorate and how those groups voted in 2008. But why do a table when you can make a graphic? In the chart below, higher red bars indicate more Democratic income groups, and higher blue bars indicate over-representation of particular income groups in the electorate.
The chart nicely shows that the most under-represented segments of the population are, in fact, the most Democratic. (Ezra calculates this cost Obama 2.3 percent of the vote.) Interestingly, the most over-represented groups are not the wealthiest, but those making between $50,000 and $100,000 a year.
