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Not sure whether to file this under Politics or Webspace, but...here it goes.
http://www.engagedc.com/wp-content/uploads/2012/07/Politics-of-the-Social-Web-Engage.png
Comments
I don't care either way, I don't like the methodology behind the chart. "Likes" are not a good way to get a reading of the political leanings of the users of a site.
Not to mention that this is, statistically speaking, biased in favor of (1) active Facebook users, specifically (2) those active enough to make a point of stuff they like using Facebook's "like" system.
That said, there are a damn lot of such people...hence how much Facebook "knows" about people.