You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allredirects garcontinue="Is_the_Election_Rigged?|39" />
  </query-continue>
  <query>
    <pages>
      <page pageid="42" ns="0" title="October 4, 2016" />
      <page pageid="43" ns="0" title="June 29, 2016" />
      <page pageid="51" ns="0" title="Coalition letter" />
      <page pageid="53" ns="0" title="December 13, 2016" />
      <page pageid="70" ns="0" title="William Pryor" />
      <page pageid="200" ns="0" title="Democrats Plan to Win Elections" />
      <page pageid="268" ns="0" title="Ed Rpter Sept 2016" />
      <page pageid="280" ns="0" title="Ed Rpter Aug 2016" />
      <page pageid="388" ns="0" title="Fourth Circuit &#039;Lawyers Up&quot; Against Trump" />
      <page pageid="389" ns="0" title="Fourth Circuit &#039;Lawyers Up&#039; Against Trump" />
    </pages>
  </query>
</api>