I wonder what would happen if "None of the above" were given a large number of write-ins in a US election. Would they be considered spoilt since there's no such person?
IIRC, in most US elections, "write ins" are only valid if they are not only for a real person, but a real person who meets the legal qualifications for the position and has officially filed as a write-in candidate. So, yeah, they'd be spoiled ballots.