Afterwards is a long time though. And the more verifiable preliminary counts that feed into the final count, the harder it is to mess with the final count. Add voter receipts + nonces that can be verified against a zero-knowledge proof after certification, then you should be able to rule out all kinds of fraud, except for the brainwashing. Solution there is just to limit the fuck out of government power so that there's little incentive to brainwash. I'm talking just courts and national defense.