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Associated Press
FILE - This May 3, 2010 file photo shows a "vote here" sign near a polling place open for early voting in downtown Little Rock, Ark. Here's something most politicians can click the like button for: Facebook friends played a big role in getting hundreds of thousands of people to vote in 2010 who probably would have otherwise stayed home, a new scientific study claims. It provides scientific evidence showing the real world political power of social media. (AP Photo/Danny Johnston, File)

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