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MILWAUKEE, WI - NOVEMBER 4: A man takes a 'selfie' as he waits in line to cast his vote in the Wisconsin gubernatorial race between Republican incumbent Scott Walker and Democratic gubernatorial challenger Mary Burke on election day at Jefferson Elementary School, November 4, 2014 in Milwaukee, Wisconsin. Walker is running in a tight race against opponent Mary Burke. (Photo by Darren Hauck/Getty Images)

MILWAUKEE, WI - NOVEMBER 4:  A man takes a 'selfie' as he waits in line to cast his vote in the Wisconsin gubernatorial race between Republican incumbent Scott Walker and Democratic gubernatorial challenger Mary Burke on election day at Jefferson Elementary School, November 4, 2014 in Milwaukee, Wisconsin. Walker is running in a tight race against opponent Mary Burke. (Photo by Darren Hauck/Getty Images)