We need to shift the burden of proof onto the election officers, that the election was held fair and square.
That makes too much sense ....
That would be “quo waranto” I think and it really, really, does need to be used once in awhile.
Actually, the presumption is that public officials exercise their duties in good faith and for the public interest. That can be rebutted however, and once has been, that presumption disappears, e.g. that idiot public official who testified that any problems were the fault of voters who stupidly and short-sightedly insisted that they could vote on election day.
The person n making the claim needs to prove their claim.