Neb. Rev. Stat. § 23-239

If any person offering to vote at any election, or upon any question arising at such town meeting, shall be challenged as an unqualified voter, the presiding officer shall proceed thereupon in like manner as the judges of general elections are required to do, adapting the oath to the circumstances of the town meeting, and the laws in force in regard to false swearing and illegal voting at general elections shall apply to false swearing and illegal voting at town meetings.