A simple MODx Revolution Polls component.
With this component you can create questions and each question could have an unlimited number of answers. With the two snippets you're able to create a view of the latest poll and results of the poll.
A visitor can vote for an answer and by logging their vote (IP based) will make them could vote just once (in the future this would be configurable per question).
Install the Polls component via the Package Manager inside Revolution.
Use the official Add-Ons Documentation for some help or look inside the snippets for additional parameters.
New in Polls 1.1.0-rc1
See the changelog in the package for details