I don't think that's the case, in this situation. It would be in a case where the ballots could be cast for either candidate (i.e., the ballot is valid, but we don't know which way it should go); but in this case, the ballots don't belong in the pile, at all. The invalid ones get subtracted from one side, but not added to the other.
I understand what you’re saying Cboldt... They’re only looking in the pile of Cochran votes.
You’re right, they’d need to find the full margin of fraudulent _Cochran_ votes.
I stand corrected !