Quick POW map!

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    
    <title>CartoDB Point Clustering</title>
    <meta name="description" content="">
    <meta name="author" content="">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
    <link rel="stylesheet" href="https://libs.cartocdn.com/cartodb.js/v3/themes/css/cartodb.css" />
    
    
    <style type="text/css">
    body, html, #map {width: 100%; height: 100%;}
      .here ul {list-style: none;}
      .here ul li {list-style: none; margin: 2px;}
    </style>
  </head>
  <body>

<div class="sidepanel">
      <div class="wrapper">
        <div class="context subheader">
          <p>Map created by <a href="https://twitter.com/andrewxhill">@andrewxhill</a></p>
        </div>
        <div class="context footer">
          <p>Create your maps with ease using <a href="https://cartodb.com">CartoDB</a></p></p>
        </div>
      </div>
    </div>

SELECT cartodb_id, the_geom_webmercator, '' as label FROM {1}
UNION ALL
SELECT -1 as cartodb_id,
ST_MakePolygon(ST_AddPoint(the_geom_webmercator, ST_StartPoint(the_geom_webmercator))) as the_geom_webmercator, 'POW!' as label FROM finlin
</script>

#us_state_1840[cartodb_id=-1]::labels {
  text-name: [label];
  text-face-name: 'Lato Bold';
  text-size: 60;
  text-label-position-tolerance: 10;
  text-fill: black;
  text-halo-fill: white;
  text-halo-radius: 1;
  text-dy: 0;
  text-allow-overlap: false;
  text-placement: point;
  text-placement-type: simple;
  text-min-distance: 100000;
}
  </script>

function main() {

// create leaflet map
        map = L.map('map', { 
          zoomControl: true,
          center: [35, -85],
          zoom: 6
        })

var tablename = "us_state_1840";
        var baseSql = $('#sql_template').html(); //.format(gridsize);
        var cartoCss = $('#cartocss_template').html(); //.format(gridsize);
        var sublayer;
        // add cartodb layer with one sublayer
        cartodb.createLayer(map, "https://andrew-free.cartodb.com/api/v2/viz/1414dd22-fbeb-11e4-bdca-7054d21a95e5/viz.json")
        .addTo(map)
        .done(function(layer) {
          // sublayer = layer.getSubLayer(0);
          // sublayer.setInteraction(true);
          // addCursorInteraction(sublayer);
          layer.getSubLayer(0).setInteraction(true);

layer.getSubLayer(0).on('featureClick', function(e, pos, latlng, data) {
            layer.getSubLayer(0).setSQL(baseSql.format(data.cartodb_id, tablename))
          });
        });

}

String.prototype.format = (function (i, safe, arg) {
            function format() {
                var str = this,
                    len = arguments.length + 1;

for (i = 0; i < len; arg = arguments[i++]) {
                    safe = typeof arg === 'object' ? JSON.stringify(arg) : arg;
                    str = str.replace(RegExp('\\{' + (i - 1) + '\\}', 'g'), safe);
                }
                return str;
            }

//format.native = String.prototype.format;
            return format;
        })();
      // you could use $(window).load(main);
      window.onload = main; 
    </script>

</body>
      </html>

Modified http://libs.cartocdn.com/cartodb.js/v3/cartodb.js to a secure url

https://libs.cartocdn.com/cartodb.js/v3/cartodb.js