Yes lets do it! They're not gonna play fair, we won't either!
There's a big difference between 'fair' and what's legal.
Mud slinging, starting rumors and using SuperPACs to skirt campaign spending laws are just a few unfair, but legal, tactics both sides engage in.
Hawaii is one of few states which began statewide mail-in and early voting well before 2020. Both schemes are inherently fraught with vulnerabilities that can enable fraud and cheating. Whether or not that cheating is specifically recognized by the courts as illegal is a huge question.
Can someone offer to take 100 of their closest neighbors' ballots to a drop box to make sure the ballots are cast? How about if they collect the ballots with none of the bubbles darkened, the envelopes unsealed, and the signature line signed by the voter?
Without direct witness or video evidence, you can't tell if the registered voter executed the ballot, or if the harvester did.
Then there's the reported problems with registration drives and ballot drop-off. Someone collecting registration forms or ballots from a person or area that probably votes for "the other side" might find their forms getting lost or shredded.
So many things are not illegal in the broader sense, but they become illegal when you look at what they are doing after they collect the forms/ballots. Of course, in their minds, everything is fair in love and war -- and politics today is nothing short of warfare.