NRS 293.2555

In addition to the right to claim the privilege for voters recognized by NRS 49.315 in proceedings governed by title 4 of NRS, a voter who casts a vote legally at an election may not, in any other proceedings or circumstances, be compelled under oath to reveal how he or she voted at the election, and the voter has a privilege to refuse to disclose the tenor of his or her vote at the election.