Discovery of unopened ballots prompts recount in SA seat One Nation won by just 58 votes
(www.theguardian.com)
It could actually be an accident, if you want you can give it a crack at managing millions of little slips of paper over massive distances, and make sure you don't lose one.
My guess a box from whoop whoop was missed, and when they found it they did the right thing by announcing they'd found it and forcing a full recount.
Corruption would be this box getting thrown on the fire