Adding and editing polls in Magento is easy. You can do that from the admin panel. Go to CMSmenu>Polls and click on the Add New Poll button to add a new one, or click on the name of an existing poll in the table on that page to edit it. Once you do that you'll see on the left side two buttons for poll settings. The first one is Poll Information and it displays options for specifying the poll question and the status of the poll.
Click on the second button, Poll Answers, to add the answers for the poll. Just click on the Add New Answer button and then type the answer in the corresponding field. You can also change the votes count; it's zero by default when you add a new answer. After you're ready click on the Save Poll button that's in the top right corner of the page.
It's also possible to disable the poll function completely. To do this, in your admin panel go to System menu>Configuration>Advanced, then click on the Disable Modules Output panel to expand it, set the Mage_Poll drop-down menu to Disable, and click on the Save Config button.
There's another poll option from which you can enable or disable multiple voting from the same IP address. To change that settings go to System>Configuration>Web, then click on the Polls panel and set the option to the desired value.