In the case of voting, open-source software systems would be overseen by public-private partnerships between counties and vendors.

Open-source systems are tried and tested. A majority of supercomputers use them. The Defense Department, NASA and the United States Air Force all use open-source systems, because they know this provides far more security. Every step in our voting process should use software that follows these examples.

Former CIA director: secure US elections with open-source voting machines / Boing Boing

hmmmm