[Kazan]

Sure, 20 inch ballots for machines that only take 19 inch ones. Just innocent mistake.

[BigB60]

I believe it was 19 in. ballots on 20 in. paper. That means the barcodes on the sides were not read by the machines because the machines are configured to read the barcodes that are directly on the side. 19 inch codes would have been to far away from the edge.