Truly Excellent Statistical Graphic

The figure that appeared on MediaCurves.com (the link to which I found here) following the second presidential debate last night was a truly outstanding example of communicating complex information using simple, effective graphical presentation.

The figure shows the responses of 1004 respondents to the question of who won the debate.  The graphic summarizes quite a bit of information in a readily understandable manner.  What I find particularly striking is (1) 20% of self-reported Republicans think that Barack Obama won and (2) only 68% of self-reported Republicans think that John McCain won.

Not necessarily related to statistical graphics, it will be interesting to see if Nate Silver is as good at predicting presidential elections as he is at predicting baseball outcomes.

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