Such is the current paranoia surrounding unfriendly foreign regimes meddling in democratic elections through hacking, some US states are seriously considering returning to traditional paper ballots.
At present, there is no consensus. The states with the best security track record, Colorado and Rhode Island, exclusively use paper-based voting systems. Other states are adamant that their technology is bullet-proof. Congressional bills and new initiatives aimed at tightening up security have stalled, despite a recent statement from President Trump that appeared to endorse the use of paper-based backup.
Now that doubt over election security has crept in, the only way to ensure an outcome untainted by outside interference seems to be a belt and braces approach – electronic voting supported by an auditable paper trail.