The category:
http://dmoz.org/Society/Politics/Alternative_Political_Systems/ has a total of 40 sites (as it has a subcategory 'Distributism' which has 9 sites), but only 2 of sites in the main S/P/APS category are 404'd (well, they were - I've now deleted them. Thanks for the pointer).
If you are interested in editing this category (and I see no reason why you can't - but I'm not a "meta editor" who accepts applications), then just go to the category and hit the "become an editor" link at the top of the page. Read the pages CAREFULLY (it _is_ worth reading the editing guidelines which are linked from the application pages), complete the form (it's worth actually filling it in in something like Word/Notepad before hand so you can re-read it before you press the powerful 'Submit' button).
If you have any questions about the application process, please feel free to ask here.