Democratic U.S. presidential candidates Senator Bernie Sanders waves as he arrives on stage before of the start of the PBS NewsHour Democratic presidential candidates debate in Milwaukee, Wisconsin, ... more 
Democratic U.S. presidential candidates Senator Bernie Sanders waves as he arrives on stage before of the start of the PBS NewsHour Democratic presidential candidates debate in Milwaukee, Wisconsin, February 11, 2016. REUTERS/Jim Young less 
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Reuters | Photo By JIM YOUNG / REUTERS
Thu, Feb 11, 2016 10:44 PM EST