> then they would simply perform the fraud 'properly' such that the given technique(s) don't show evidence
Unless the fraud is decentralized, for example when some scattered districts fudge their numbers but can't necessarily coordinate with one another (and especially not with those districts that aren't fraudulent). In that case, the anomalies would still show up.
Unless the fraud is decentralized, for example when some scattered districts fudge their numbers but can't necessarily coordinate with one another (and especially not with those districts that aren't fraudulent). In that case, the anomalies would still show up.