Approval ballot

Approval voting ballots show a list of the candidates running for that seat for each office being contested.

The more structured ballots may aid voters in offering clear votes so they explicitly know all their choices.

The Yes/No format can help to detect an "undervote" when a candidate is left unmarked and allow the voter a second chance to confirm the ballot markings are correct.

The "single bubble" format is incapable of producing invalid ballots (which might otherwise be rejected in counting).

Thus, approval voting raises the importance of ensuring that the "chain of custody" of ballots is secure.