It's all about protecting the establishment Republican or Democrat:
[Alaskan Republican Joe Miller's] campaign has posted on their site three affidavits from voters concerned that irregular activity occurred at their polling places. One says that, although he was the tenth voter at his location, he saw a ballot box stuffed with "hundreds" of ballots. Another claims that the 15 write-in ballots she reviewed had Sen. Lisa Murkowski written in in what looked like similar enough handwriting that it could be from the same person.
There's more. And liberal radio host Shannyn Moore notes a different kind of irregularity:
Despite heavy national media coverage and historic Citizens United money spent on Alaska’s hotly contested and much-watched three-way US Senate race, the results, if we are to believe them, were a surprisingly low voter turnout. In fact, this election was one of the lowest turnouts since they started tracking ballots cast versus registered voters in the mid-1970s.
It's almost as if the circumstances were massaged to make it possible for a once-a-century write-in candidacy success. The Alaskan Republican Party is asking Miller to concede, naturally.