How to Mark Your Optical Scan Ballot

Most U.S. voters use electronic or optical-scan ballots

Dominion ICE

Spoilt vote - Wikipedia

Douglas W. Jones on Mark Sense Voting

Our Voting System

Comparing the auditability of optical scan, voter verified paper audit trail (VVPAT) and video (VVVAT) ballot systems

Paper trail: Indiana's push to create a paper backup for electronic voting machines drawing opposition - The Indiana Lawyer

8 Things You Need To Know To Vote In Idaho's Primary

Flawless Vote Counts MIT Technology Review

New Voting Instructions