your going to need a place to store the results (flat file or database) then read to or write to the file (php), a flat file would be the best bet since the data isn't large enough to warrant a db.after reading the file print out the results with a server side language in html. thats what I would do but I have been wrong before LOL, there should be tutorials on the web of how to do it in detail. and probably even free scripts as well
the data for the results of the poll must be kept in persistent storage, a file, a database, a cookie, HTML is a placeholder for static or dynamic data, but it can't manipulate that data on it's own. you must get the data from somewhere a cookie for instance
If you only want to use html, then you will have to embed someone elses code. Check this out: http://www.bravenet.com/webtools/minipoll/ it helped me before i learnt php myself, it is actually very good.