The Django-Twilio library is designed to help developers build Django web applications powered by Twilio. The documentation includes step-by-step instructions for integrating the library with the developer's existing Django application.
The defacto standard for online surveys, SurveyMonkey, just added phone polling to its services. What's remarkable about the addition is that it came via an acquisition. The company now owns Precision Polling, a site for creating and executing polls over the phone.