spamvertized.org; a gallery of US political spam.
Sadly, Howard Dean kicks it off, with a ‘Dean For Texas’ e-pended message (‘e-pending’ is explained here). But don’t go voting R just yet — they’ve got one too ;) It’s not on the site just yet, as the site maintainer wants to get permission from the recipient to post it publicly first.
And check out these nefarious antics from the Bush 2000 campaign.