Myth: blockchain alone makes voting secure
A blockchain is a tamper-evident, shared record. That is useful, but it does not by itself authenticate voters, keep ballots secret, or prove the count is correct. A vote stored on a blockchain can still be insecure if those properties are missing. Blockchain is a component, not a magic guarantee.
Reality: what blockchain does well
Where a public ledger helps is durability and transparency: once published, records are very hard to alter quietly, and anyone can read them. For voting, that supports auditability - observers can see the same data the organizers see, without relying on a private database.
Myth: blockchain means votes are public
A frequent worry is that putting votes 'on a blockchain' exposes them. It does not have to. Ballots are encrypted and anonymized before anything is published, so what is public is the verifiable record, not anyone's choice.
Reality: cryptography does the heavy lifting
The properties people actually want from a vote - secrecy, coercion resistance, verifiability - come from cryptography such as zero-knowledge proofs, not from the ledger itself. The right way to think about it: cryptography provides the guarantees, and a ledger can make the resulting evidence public and durable.