You can embed Webex meetings (and other kinds of Webex collboration like messaging, Webex calling, 1:1/Space calls, etc.) into a web page using the Webex JS Browser SDK.
I have not, however, seen anything in there about managing/manipulating polls, or otherwise accessing poll data ex post facto. Some thoughts:
* Contact the Webex developer support folks directly to see if they have any suggestions
* Check the Webex feedback/enhancement request site to see if this feature has been requested, or add a new request
* Use an external facility/service which has APIs to do the polling (or roll your own)