This kind of goes in hand with Endorsement History

Will use D3 for data visualization
https://d3js.org
Via an algorithm like this:
http://mbostock.github.io/d3/talk/20111116/force-collapsible.html

Circles will be colorized
Blue- extinguished
Orange- ignited
Grey - in stack

Circles will have different sizes based on area rep
Circles will show the area rep number within the circle
Keep user decisions anonymous, but still show what kind of endorsement they did

Preferably in a JSON format with pagination for each node(so we only have to load first level data(maybe 2nd level too))
Then based on user clicking we add/remove nodes