Setting up a class activity poll on JupyterHub

Hi Jovyan educators,

I’m trying to reproduce the example of a class poll activity explained in the jupyter for education book (section “Real world experience – Ticket to leave”) and on this relatively old notebook, so far to no avail (the answer plots do not show up, and I’m not sure that the design makes much sense, or I misunderstood something).

Does anyone know of something similar in the jupyterhub for education ecoystem? I found the idea of a class poll via jupyterhub very attractive.