Clinton Eugene Curtis testifies under oath before the U.S. House Judiciary Members in Ohio :
Q. "Are there computer programs that can be used to secretly fix elections?"
A. "Yes."
Q. "How do you know that to be the case?"
A. "Because in October of 2000, I wrote a prototype for Congressman Tom Feeney [R-FL]..."
Q. "It would rig an election?"
A."It would flip the vote, 51-49. Whoever you wanted it to go to and whichever race you wanted to win."
Q." And would that program that you designed, be something that elections officials... could detect?"
A. "They'd never see it."
http://video.google.com/videoplay?docid=5851494414241212085&q=Clinton+Eugene+Curtis&hl=en
Johns Hopkins’ computer expert video re: Electronic Voting Machines
http://video.google.com/videoplay?docid=3074338748583195498&q=electronic+voting&hl=en
Princeton University Video re: Hacking Diebold E-Voting Machines
http://video.google.com/videoplay?docid=8673726680080882009&q=diebold&hl=en