Board Thread:Support Requests - Getting Technical/@comment-5754239-20130330000023/@comment-4674838-20130330044318

Try

Edit: action=render is a URL parameter that forces wiki pages to render just the page content. As long as the poll is the only thing on the page, this may work for your purposes.

Another thing to keep in mind is that polls on Wikia use JavaScript, and they likely have some dependency on MediaWiki JavaScript library that's on Wikia but not on your external website, so the poll will not actually function properly. But if you just care about displaying the results of the poll (without allowing people to vote on your external site) this isn't a concern.