I popped a couple of polls up earlier today and wasn’t entirely certain if they could support the use of HTML or Markdown, I gave it a whirl and the preview of the post suggested that I could - awesome.
Once I had posted the topic, the HTML and Markdown was rendered as plain text.
I have raised this with the Discourse team and it looks like it is supposed to be supported and that a fix will be applied shortly. Details here.
@Ben, @sampattuzzi, @Michael_Bridges, @Lucy_Becker - it would give you the opportunity to layout poll options with both more detail (if required) or just more aesthetically pleasing, along with adding hyperlinks.
Example;
Screenshot of poll;
taken from;