"results": {
    "collection1": [
      {
        "rank": "1",
        "id": "abc",
        "vote": "8542"
      },
      {
        "rank": "2",
        "id": "bcd",
        "vote": "2000"
      },
      ]


function transform(data) {

  for(var collection in data.results) {

    data.results[collection].filter(function(user) {
      return user.vote === '8542';
    });


  }


  return data;
}