Run Date: 2026-11-11 18:27:57.988953 Copyright (c) Citizens' Oversight
A batch scanned twice gives images that differ in bytes, ballot ids and pixel values. The votes the audit extracts from each scan stay the same. A vote pattern is the precinct, the style and the extracted votes of a ballot. A balanced pattern is held only by ballots of two batches, the same number in each. A rare twin has one ballot in each batch, a rare quad two in each, and so on. A repeated batch doubles each of its patterns, so every one of them is balanced. Chance links are scattered. A repeated batch puts many links between one pair of batches. A batch scanned whole in one run and split in another links only by its twins.
| count | number |
|---|---|
| Ballot images | 364,514 |
| Vote patterns | 246,726 |
| Patterns held by one ballot | 210,650 |
| Patterns held by two or more ballots | 36,076 |
| Patterns held by exactly two ballots, in two batches: rare twins | 0 |
| Patterns held by exactly two ballots, in one batch | 24,301 |
| Common patterns, held by three or more ballots | 11,775 |
| Common patterns held by an even number of ballots | 4,087 |
| Balanced common patterns, two or more ballots in each of two batches | 0 |
| Batches | 1 |
| Groups of batches with exactly the same ballots | 0 |
| Batch pairs that share a balanced pattern | 0 |
| Batch pairs paired in full | 0 |
| Possible repeated batches, 90% or more of the smaller batch paired | 0 |
Comparing every pair of batches would take too long, so balanced patterns pick the pairs to look at. A batch pair with 3 or more balanced patterns is paired in full. Links counts them, each pattern once. A pair with fewer is also paired in full when every ballot of its smaller batch is linked, and that batch holds 3 or more. Paired in full means every ballot of both batches is offered for pairing, not only the linked ones. Each ballot of one batch pairs with a ballot of the other that has the same vote pattern, each ballot used once. Paired counts those pairs. It does not mean that every ballot pairs.
Paired % is the paired ballots over the ballots of the smaller batch. The paired ballots have the same votes, so their vote totals match exactly. Take out the unpaired ballots of each batch, and the two batches have exactly the same counts. A possible repeated batch has 90% or more of the smaller batch paired.
In CVR says whether the ballots of a batch have CVR records. Where both batches are in the CVR, the same ballots may be counted twice. A match by votes does not prove that two images are one paper. The images do.
Status says whether a person's grades and the batch counts confirm the pair. A sample is a ballot whose vote pattern is held by one ballot in each batch, so its two copies must be one paper. A confirmed pair needs enough samples graded 5 and none graded 3 or less. The two sides must also have about the same ballot count, and nearly all of the larger side paired. Only confirmed pairs change the Reconciliation Report.
None.
These batches hold the same vote patterns, the same number of each. So they have the same ballot count and the same vote totals. This search checks every batch, with no need for links. Small batches of common patterns, such as one blank ballot each, can match by chance.
None with 3 or more ballots each.
None. Every possible repeated batch has a batch with no CVR records.
These batch pairs were paired in full, but less than 90% of the smaller batch paired. Common patterns within one precinct pair some ballots by chance.
None.
For each possible repeated batch, up to 8 of its samples are shown side by side. Look for the same paper: the shape and place of each hand mark, stamps, tears and handwriting. Pixel darkness changes from scan to scan, so it is no test.