Printing was done in New Zealand on paper not available in Cambodia.
Ballots have special perforation patterns and watermarks to discourage counterfeiters.
Ballot boxes from Japan have three locks and three seals each. However, even if ballots can be kept secure, officials worry about tampering - with voters. Also, though this campaign has been less violent than the one in 1993, it has not been entirely peaceful. Police and government officials often have claimed the motives of violent acts are non-political. A hand grenade kills two and wounds three in south-central Takeo province.