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Early voting is well under way in Arizona and a number of other states, in advance of Election Day on Nov. 8. And some of those voters are casting their ballots online.

But a new investigation from the program Reveal from the Center for Investigative Reporting and PRX looks at how secure Internet voting is. And, perhaps not surprisingly, it found just as emails can be hacked, so can voting systems.

Byard Duncan with Reveal discusses the investigation.