Do you really think that many democrats would vote for McDaniel s???
If a registered democrat voted in the Republican run-off, it was for the old geezer.
I do wonder what the remedy is, and the threshold. At some level, a court has to assume something about the invalid ballots. At best, once a certain number of ballots are invalidated, the election results are voided. The number has to be at least the margin of victory (court would assume all of the votes went to the victor), but might be as many as twice that or more.