Political Graveyard[1] is the world's richest open dataset on American politicians, and its size dwarfs everypolitician.org
[1] http://www.politicalgraveyard.com/
[Disclaimer: I have no affiliation with the site, not even sure who runs it]
[1] http://www.politicalgraveyard.com/
[Disclaimer: I have no affiliation with the site, not even sure who runs it]
Lawrence Kestenbaum, attorney, politician, and the creator and webmaster of The Political Graveyard website.
In terms of utility to effort ratio, I think it's right to start with national legislatures. However, I hope there will eventually be a dataset that's as deep as Political Graveyard for the entire planet, even if just to satisfy my inner data nerd :)
To be clear: I've professionally written such javascript only Single Page Applications, and they worked out really well, since they were all dynamic, real-time changing content all the way.