This link covers a more adequeate robust central "No Spin to the Left" as the direct link above does.
Gives some good insight on both sides, about both sides.
The 1 or so reason against G.W. is a very left leaning read, and is thought by most of my group peers to be very well.. I can't post that here.
http://www.newsmax.com/hottopics/Sen_John_Kerry.shtml