Alaska Stat. § 15.15.210
Every election official shall question, and every watcher and any other person qualified to vote in the precinct may question, a person attempting to vote if the questioner has good reason to suspect that the questioned person is not qualified under AS 15.05. All questions regarding a person's qualifications to vote shall be made in writing setting out the reason the person has been questioned. A questioned person shall, before voting, subscribe to a declaration in a form provided by the director attesting to the fact that in each particular the person meets all the qualifications of a voter, is not disqualified, and has not voted at the same election, and certifying that the person understands that a false statement on the declaration may subject the person to prosecution for a misdemeanor under this title or AS 11. After the questioned person has executed the declaration, the person may vote. If the questioned person refuses to execute the declaration, the person may not vote.
AS 15.15.210