Nebraska Revised Statute 23-3202
County assessor or deputy; county assessor certificate; required; exception.
No person shall be eligible to file for, be appointed to, or hold the office of county assessor or serve as deputy assessor in any county of this state unless he or she holds a county assessor certificate issued pursuant to section 77-422.
The right of a person elected county assessor to assume office may be tested in quo waranto, mandamus, or injunction even though no election contest is filed. Shear v. County Board of Commissioners, 187 Neb. 849, 195 N.W.2d 151 (1972).