E-democracy module

I am unaware of a module per se. But this functionality can be done with Wikitools (http://drupal.org/project/wikitools), or the Wiki and Talk modules, or you could simply develop this functionality on your own with drupal core modules. Use CCK to create a content type called "law." Combined with various access control modules (or just an embellished permission/role system), there are lots of ways of doing this.