All the more reason why risk-limiting audits [1] should be standard procedure to sanity-check precinct results, especially for thinly-attended elections where fraud has a bigger impact on the outcome. Unfortunately, these things take time and money, and there's little immediate payoff in doing it, especially in the small elections that need it the most.

[1] https://www.vote.pa.gov/About-Elections/Pages/Post-Election-...