Duplicate voting is prohibited.
- Multiple voting – where a voter casts more ballots than permitted – should be prohibited by law. Safeguards to prevent a person from voting again in the same or another polling station should be put in place. Examples of such safeguards include: marking the voter register to indicate an elector has voted, requiring the voter to sign the register, and marking a voter’s finger with ink.
- Checking that no opportunity exists to manipulate the voting process in the polling station, for example by switching boxes, fraudulent ballot papers, voting more than once, impersonation of another elector.
- Multiple voting should be prevented effectively without, however, violating the principle of the secrecy of the vote.