...
     <content select=".disqus1"></content>
  </template>

  <script>
    Polymer({
      is: 'my-testView1',

      ready: function ()
       {
         var disqus_config = function () {
         this.page.url = 'https://www.example.com/testView1';
         this.page.identifier = '/testView1';
         this.page.disqus_shortname = "myChannelID";
         };

         (function() {
             var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
             dsq.src = 'http://' + disqus_shortname + '.disqus.com/embed.js';
             (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq);
         })();

      }
    });
  </script>

...
      <content select=".disqus2"></content>
  </template>

  <script>
    Polymer({
      is: 'my-testView2',

      ready: function ()
       {
         var reset = function (newIdentifier, newUrl) {
            DISQUS.reset({
                reload: true,
                config: function () {
                    this.page.identifier = 'https://www.example.com/testView2';
                    this.page.url = '/testView2';
                 }
              });
           };

           (function() {
                var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
                dsq.src = 'http://' + disqus_shortname + '.disqus.com/embed.js';
                (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq);
            })();

      }
    });
  </script>