Tagging.where(taggable_type: 'Poll').pluck(:taggable_id).uniq.each do |poll_id|
      tag_ids = Tagging.where(taggable_id: poll_id, taggable_type: 'Poll').pluck(:tag_id)
      names = Tag.where(id: tag_ids).pluck(:name)
      if p = Poll.find_by(id: poll_id)
        group_ids.push p.group_id