At any regular or special town election any person may vote who is registered as an elector on the revised registry list of the town last completed and he shall vote only in the district in which he is so registered, provided any person may vote whose name is restored to the list under the provisions of section 9-42 or whose name is added on the last week day before a regular election under the provisions of section 9-17. Each person so registered shall be permitted to vote unless he is not a bona fide resident of the town and political subdivision holding the election or has been convicted of a disfranchising crime. Any person offering to vote and being challenged as to his identity or residence shall, before he votes, prove his identity with the person on whose name he offers to vote or his bona fide residence in the town and political subdivision holding the election, as the case may be, by the testimony, under oath, of at least one other elector or by such other evidence acceptable to the moderator.