Here's a rather interesting experiment for fans of US politics blogs.

What. WatchBlog is a multiple-editor weblog broken up into three major political affiliations, each with its own blog: the Democrats, the Republicans and the Third Party (covering everything outside the two major parties).
Why. Let's face it, politics are confusing. Sometimes it's difficult to know who to believe, who to listen to and who to support. We're here to help. Posting on a regular basis are editors representing each major party. Stay informed.

I haven't studied the site in detail so don't know how good the content is, but the concept intrigues me. Note that if you want to subscribe to the site's RSS feed, you have to separately subscribe to each section, although no doubt some will consider this a good thing... try it for yourself and see.