The Miami Herald offers this report, with the subhead: “A top election official and computer experts say computer hackers could easily change election results, after they found numerous flaws with a state-approved voting-machine in Tallahassee.” A snippet:

[Leon County election chief Ian] Sancho first clashed with Diebold in May, when he teamed up with a nonprofit election-monitoring group called BlackBoxVoting.org, which has made a crusade of showing that electronic voting machines are subject to fraud. BlackBox hired Herbert Thompson, a computer-science professor and strategist at Security Innovation, which tests software for companies such as Google and Microsoft.
Thompson couldn’t hack into the system from the outside. So Sancho gave him access to the central machine that tabulates votes and to the last school election at Leon County High.
Thompson told The Herald he was ”shocked” at how easy it was to get in, make the loser the winner and leave without a trace. The machine asked for a user name and password, but didn’t require it, he said. That meant it had not just a ”front door, but a back door as big as a garage,” Thompson said.
From there, Thompson said, he typed five lines of computer code — and switched 5,000 votes from one candidate to another.
”I am positive an eighth grader could do this,” Thompson said.