Hi HN,
my name is Basti, and I would like to showcase our project Buzzngo with you. Our system is running with RethinkDB under the hood and although the company behind it faded away we still think it's a nice tool to power real-time statistical analysis.
Our tests in Frankfurt, Berlin and Hamburg (Germany) were great collecting thousands of votes during a sunny day. Feel free to sign up if you want to start public polls in Germany/Europe in the near future.
Happy to hear your opinion!
Greetings Basti