JS Twitch chat listener voting script:

// JS Twitch chat listener voting script:

var inputs = [
            {"username": "ShadowsDieAway", "input": "12 16"},
            {"username": "TheNewGeezer", "input": "5 24"},
            {"username": "YoYoYoDude1", "input": "24 16"},
            {"username": "ShadowsDieAway", "input": "11 11"},
            {"username": "TheNewGeezer", "input": "24 5"},
            {"username": "YoYoYoDude1", "input": "lol 16"},
            {"username": "ShadowsDieAway", "input": "5 5"},
            {"username": "TheNewGeezer", "input": "9 9"},
            {"username": "YoYoYoDude1", "input": "2 2"},
            {"username": "failure", "input": "lol hahaha"},
            {"username": "failure", "input": "3"},
            {"username": "failure", "input": "5 7 8"},
            {"username": "failure", "input": "nope"}
        ];

var votes = [];
var votes_x = {};
var votes_y = {};
function range_x(x) { return x >= 1 && x <= 25 };
function range_y(y) { return y >= 1 && y <= 19 };
function top_votes(type) {
    return Object.keys(type).sort( function(a,b) {
        return type[b] - type[a];
    }).map(function(x) {
        return x + ": " + type[x];
    });
};

inputs.forEach(function(input) {
    // parse
    var username = input["username"];
    var vote = input["input"].split(" ").map(function(x) { return parseInt(x,10); });

    // cull
    var usernames = votes.map(function(x) { return x[0] });

    // validation
    if ( !usernames.includes(username) && vote.length == 2 && range_x(vote[0]) && range_y(vote[1]) ) {
        votes.push([ username, vote[0], vote[1] ]);
        !votes_x[vote[0]] ? votes_x[vote[0]] = 1 : votes_x[vote[0]]++;
        !votes_y[vote[1]] ? votes_y[vote[1]] = 1 : votes_y[vote[1]]++;
    };
});

console.log(votes);
console.log(top_votes(votes_x));
console.log(top_votes(votes_y));