"People watching over each other" usually do not have root (or any) access to the servers, they are usually only shown aggregated stats (like number of votes cast). They usually do not have access to voter details like IP addresses, phone numbers, fingerprints. In some cases, they can read the public "blockchain", but not the private one (in systems with 2 blockchains). The blockchain doesn't contain much useful information to verify, only votes.

The ones who have actual access, are from the government.