An exerpt image from the Events log, page 4, showing the 4 columns: Number of Electors on the Record of Electors + Spoiled ballots + Unused ballots = Total. The columns create an equation. The example shows 105 electors on the Record of Electors, plus 1 Spoiled ballot, plus 394 unused ballots equalling 500 ballots. The number of ballots given at the beginning of the day. This accounts for all ballots, ensuring that none are lost or missing.