I think your XML (RSS feed) is malformed. Description is a text field; therefore, you need to use CDATA to render HTML. You didn't mention how your RSS feed(s) are created in the first place. Typically, a PHP script grabs info from a database and creates the XML file (used for the RSS feed).
Try this and see if it works better ...
<?xml version="1.0" encoding="ISO-8859-1" ?>
<title>Liberals Win Obama Poll Page</title>
<description><![CDATA[<a href='http://www.liberalswin.com/O_Obama_Poll_Detail.php'><img src='http://www.liberalswin.com/graphics/Obama_Poll.png' style='float:left; padding-right:10px;' /></a>Aggregate All Current non-partisan Polls ]]></description>