We have studied putting up our own poll offering and found that it would be more effective for users to use a service that utilizes Javascript to post polls.
Services like PollDaddy are well suited for this.
To use it, do this...
* Sign up for PollDaddy. It's free.
* Create a poll using the questions you want and the stylings you want.
* Get the Javascript code.
* Create an article. Write any introduction you want. Click Basic Text Box. Click HTML (below the article entry box).
* Paste the PollDaddy code.
* Click back to Rich Text Editor and continue adding stuff.
When the article is previewed or displayed, you will see the poll. The only downside is that there can only be 100 responses on PollDaddy polls.