Election Obligations & Standards Database
"Voted ballots and counting sheets (protocols) should be stored in a secure place, at least for a period of time sufficient for the final resolution of all election appeals."
OSCE (ODIHR): Existing Commitments for Democratic Elections in OSCE Participating States
, p. 73
Existing Commitments for Democratic Elections in OSCE Participating States
Vote counting procedures should be verifiable and votes should be preserved for review.