Well, I doubt that would work too well either. A rash of e-mails of the same general form will probably be attributed to a few spammers spoofing return address

Well, I doubt that would work too well either. A rash of e-mails of the same general form will probably be attributed to a few spammers spoofing return addresses, rather than to a genuine movement. These people probably get spam about political issues all the time.