A couple of good links to keep you busy...

Here are a couple of posts that sum up a lot of these attacks really nicely.  Obviously I was inspired by these, enough to start my own blog, but everyone has a different way of presenting the information so for diversity's sake, check these out:

Cover this! Inside the nastiest ’08 rumors

http://www.politico.com/news/stories/1008/15106.html

Great Moments in Election-Year Blogging

http://jonswift.blogspot.com/2008/10/great-moments-in-election-year-blogging.html