Neb. Rev. Stat. § 32-901: Neb. Rev. Stat. § 32-901

(1) To vote for a candidate or on a ballot question using a paper ballot that is to be manually counted, the registered voter shall make a cross or other clear, discernible mark in the square opposite the name of every candidate, including write-in candidates, for whom he or she desires to vote and, in the case of a ballot question, opposite the answer he or she wishes to give. Making a cross or other clear, discernible mark in the square constitutes a valid vote.

(2) To vote for a candidate or on a ballot question using a ballot that is to be counted by optical scanner, the registered voter shall fill in the oval or other space provided opposite the name of every candidate, including write-in candidates, for whom he or she desires to vote and, in the case of a ballot question, opposite the answer he or she wishes to give. A mark in the oval or provided space that is discernible by the scanner constitutes a valid vote.

(3) To vote for a candidate or on a ballot question using a voting system with an electronic aspect authorized for use under the Election Act, the registered voter shall follow the instructions for using the voting system to cause a mark to be recorded opposite the candidate or ballot question response for which the voter wishes to vote. Causing such mark to be recorded does not constitute a valid vote. A paper ballot printed to reflect the voter's choices constitutes a valid vote.