Electronic Voting Machines Unreliable, Some Experts Say State and local officials buy electronic voting machines in hopes of avoiding the low-tech messiness of pencil marks on paper ballots and so-called "hanging chads." But some computer scientists say vote-counting computers are inaccurate. NPR's Dan Charles reports.

Electronic Voting Machines Unreliable, Some Experts Say

Electronic Voting Machines Unreliable, Some Experts Say

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State and local officials buy electronic voting machines in hopes of avoiding the low-tech messiness of pencil marks on paper ballots and so-called "hanging chads." But some computer scientists say vote-counting computers are inaccurate. NPR's Dan Charles reports.