Amazing concept and the potential here is monumental and positive.
Upon first impression when visiting the homepage..
The site layout is crowded with text and elements. I would suggest adding more space between some of the elements, and also making the candidate evaluations not take up 100% of their container's width, adding some space on top and to the right and left would make it easier to differentiate between different objects.
Okay, that was enough criticism of the VISUAL aspect of the site, I know this is much more substantive and aesthetic quality is not the priority so I will end it here.
I think perhaps a navigation bar for candidate regions/states/countries would make it easier for constituents to find their candidates.