Metafilter has a thread pointing to various weblogger driven coverage of the Democratic National Convention. Unfortunately it appears to have been hijacked by folks that want to flame instead of discuss the various sites to watch.
So you can ignore that thread and look here:
politics.technorati.com
conventionwebloggers.com
politics.feedster.com
Related articles:
NYTimes: Web Diarists Are Now Official Members of Convention Press Corps.
WSJt: Meet the Bloggers: Not the usual cast of characters for once!