Watch this video.
Princeton computer scientists have figured out how to hack into a Diebold AccuVote [sic] TouchScreen voting machine. The subversion of democracy takes a coupla minutes, a screwdriver or paperclip, plus a floppy with the malware they've written.
This is no comedy video; it's a bone-chilling, blood-pressure-raising, citizen-outraging rebuttal to all the calming unctuous bromides you've heard about the safety of our voting technology. The authors of this paper may be geeks, but they don't wear tinfoil hats. The P doesn't stand for Paranoia; it stands for Princeton.
I'd upload the Princeton video so you could watch it right here, but the Creative Commons non-commercial license it's copyrighted under precludes wrapping it in an ad. As long as you attribute it and don't profit from it, you can post the video on any site you'd like. If the hotlink to the video doesn't work for you, here's the URL: http://itpolicy.princeton.edu/voting/videos.html
The complete paper can be found here: http://itpolicy.princeton.edu/voting/