Just as they are opposed to de-certification.
The obvious problem is that those results should never have been certified in the first place.
In lieu of that, though, there are steps which could avoid all this unpleasantness, and they should be demanded.
Clearing voter rolls a month before the election of those who have died.
Removing those who have moved out of the precinct or county would be good.
Running a check through the records to look for multiple people at the same address might trip a flag here and there.
Verifying addresses to make sure there is something there besides a vacant lot, or at least a valid address.
If chains that deliver food orders can verify addresses (granted, they are not at 100%, but pretty close), I would think a board of elections could. If you live in the precinct, you should have a physical address, even if you get your mail at a box.
Verifying citizenship would be nice, too.
All this is aimed at verifying the eligibility of voters beforehand, especially if ballots are mailed out because: COVID, which will rear its head in time for the midterms, guaranteed.