Electronic voting machines count 80% of the votes cast in America today. But are they reliable? Are they safe from tampering? From a current congressional hearing to persistent media reports that suggest misuse of data and even outright fraud, concerns over the integrity of electronic voting are growing by the day. And if the voting process is not secure, neither is America's democracy.

In the 2000 presidential election, an electronic voting machine recorded minus 16,022 votes for Al Gore in Volusia County, Fla. While fraud was never proven, the faulty tally alerted computer scientists, politicians and everyday citizens to the very real possibility of computer hacking during elections.

In 2002, Seattle grandmother and writer Bev Harris asked officials in her county why they had acquired electronic touch screen systems for their elections. Unsatisfied with their explanation, she set out to learn about electronic voting machines on her own. In the course of her research, which unearthed hundreds of reported incidents of mishandled voting information, Harris stumbled across an "online library" of the Diebold Corporation - which counted more than 40 percent of the presidential votes nationwide in 2000 - discovering a treasure trove of information about the inner-workings of the company's voting system.

Harris brought this proprietary "secret" information to computer security expert Avi Rubin of Johns Hopkins University, who determined that the software lacked the necessary security features to prevent tampering. Her subsequent investigation took her from the trash cans of Texas to the secretary of state of California and finally to Florida, where a "mini-election" to test the vulnerability of the memory cards used in electronic voting produced alarming results. continued

HBO - Premieres Thursday, November 2 at 9pm.