This video says about itself:
5 June 2016
The presidential primary in Puerto Rico is today, but concerns about election fraud have been growing for days already. Bernie Sanders campaign officials and supporters are worried that a series of problems, ranging from drastically reduced polling stations to poll workers who can’t get certified, might be signs of voter suppression or election fraud. Some of these problems wouldn’t just hurt Sanders supporters, but could reduce everyone’s access to voting during the primary. What exactly is happening? Here.