Thank you for pointing this out. I've just applied the fix to the modules/currentpoll.php file in the download package here, so if you will download the files again and replace your existing currentpoll.php file with the updated version, that should take care of the issue.
Or, if you'd rather apply the fix manually, just look in the file for this line:
PHP Code:
$pollmod['question'] = $bbcode_parser->parse($pollmod['question'], $pollmod['forumid'], $mod_options['portal_poll_allowsmilies']);
And replace with this:
PHP Code:
$pollmod['question'] = $bbcode_parser->parse(unhtmlspecialchars($pollmod['question']), $pollmod['forumid'], $mod_options['portal_poll_allowsmilies']);