National: When Voting Machines Misbehave | Bloomberg
Interference by hackers is just one of the nightmare scenarios that worry computer scientists about the upcoming election. The other is a race so close that calling the result is beyond the capacity of today’s voting technology. Experts who’ve delved into the accuracy of these apparatuses — from punch cards and mechanical levers to electronic voting machines — say that no system is perfect. In most cases the error rates are unknown, or are only measured in artificial test settings and not as they would be used in the real world. Computer scientist Douglas Jones of the University of Iowa, who co-authored the book “Broken Ballots: Will Your Vote Count?,” came to realize that voters usually blame themselves when something goes wrong in the voting booth — a tendency that could mask intentional hacking or equipment error. When Jones set up experiments with electronic voting machines rigged to switch votes away from the subjects’ choices, the people casting ballots assumed they had done something wrong. “People tend to trust the machines,” he said — even when the machines don’t work. Electronic voting machines use proprietary software, making it hard for outside researchers to get a measure of their error rates, according to computer scientist Rebecca Mercuri, founder of the company Notable Software and an expert on electronic voting systems. “In polling they say the results are plus or minus 3 points or so, but they don’t say that about voting machines,” she said. “If it’s a really close election, you’re looking at a crapshoot.”

