aggregate_by_country_and_vote.json

{
  "size": 0,
  "aggs": {
    "filtered": {
	  "filter": {
        "match_all": {}
      },
      "aggs": {
        "root": {
          "nested": {
            "path": "votes"
          },
          "aggs": {
            "group": {
              "terms": {
                "field": "votes.country",
                "min_doc_count": 5,
                "shard_size": 10,
                "size": 200
              },
              "aggs": {
                "order": {
                  "terms": {
                    "field": "votes.vote"
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}