due to concerns about the possibility that the process could be hacked.
Generally, in U.S. elections and primaries, the voting process generates anonymized records; these are intended to allow officials to do things like conduct recounts or double check if someone interfered with any voting machines, while still keeping individuals’ votes secret.
All that public jockeying means the vote isn’t anonymous, which makes it possible to verify a digital vote in ways we can’t with a secret ballot. That’s important because any election process run online will be vulnerable to attacks, whether they’re aimed at disrupting the voting process or altering the results.