Grist's Electoral Collage
I've just started to read some of these pieces, but have no problem recommending this special issue of Grist in advance, as I've yet to come across anything of their's that wasn't well-written and researched and still lots of fun. Must say I'm a bit jealous of their resources -- had grand plans to something similar myself in this humble blog, but life intrudes...
Grist's Electoral Collage 2003: A special edition on elections and the environment