The data collection cards by Deibold contain an executable program that enables the cards to be pre-rigged with no trace of tampering. American voting system is in major jeopardy and in need of overhaul. HBO SPECIAL Hacking Democracy http://video.google.com/videoplay?docid=-7236791207107726851&q=hacking+democracy&hl=en Enjoy the spoils.
There is an extremely good case for any software used in electronic voting be open source. It would then be open to independent scrutiny by anybody with the necessary skills. This does not compromise security - it enhances it because many eyes are more likely to find vulnerabilites. There would be any number of ambitious security experts devoting themselves to some serious effort.