I bolded a different clause. Notice the "or" at the beginning. Writing the last name is sufficient, and it doesn't say anything about how much misspelling is allowed.
Miller had been challenging things like "Murkowski, Lisa", and ballots where the 'L' was cursive.
Both of 'em are sore losers, but Miller seems to also be a *expletive deleted*bag; that should disqualify him in my opinion.
"... and if the name, as it appears on the write-in declaration of candidacy, of the candidate or the last name of the candidate..."
The "as it appears on the write-in declaration" applies equally whether the person chooses to write the entire name or simply the last name. Since all the text says is "as it appears..." there is no textual allowance for any misspelling at all.
For the statute to support poor/lazy spellers it would have to read "as it appears or a minor misspelling thereof..."
Since there is not yet any controlling case precedent or judicial ruling on that particular part of the election law; the "intent of the voters", as expressed by their freely elected legislators, should be respected and the text read exactly as written.