A technician works to prepare voting machines to be used in the upcoming presidential election in Philadelphia. Pennsylvania could be a key battleground state in the election, but the state still employs 1980s-era voting machines. Photo: AP

Pennsylvania voters will use 1980s machines, made by firms that no longer exist, that produce no paper record of their vote. What could go wrong?

Topic |   US election 2016: Background

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A technician works to prepare voting machines to be used in the upcoming presidential election in Philadelphia. Pennsylvania could be a key battleground state in the election, but the state still employs 1980s-era voting machines. Photo: AP
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