Recommendation 11 (Electronic Voting) Netherlands 2006
http://aceproject.org/ero-en/regions/europe/NL/netherlands-elections-assessment-mission-report/at_download/file
There should be routine testing of voting machines before elections, and randomly
selected machines should be subject to testing by an entity other than local election
authorities. Mechanisms should be considered to verify that voting machines, as used
on election day, are configured with the approved firmware and ballot definition.