Multiple copies of the same content shown due to voting
Hmm.. On the right side, go to Advanced, Other, then Query Settings.

Select the checkbox for "Distinct", and click Apply.

According to the help note:


  This will make the view display only distinct items. If there are
  multiple identical items, each will be displayed only once. You can
  use this to try and remove duplicates from a view, though it does not
  always work. Note that this can slow queries down, so use it with
  caution.


There are more options past that if it doesn't work.. making it more strict, for example.  But as the help note mentions.. this doesn't always work.