Neb. Rev. Stat. §§ 11-101
All state, district, county, precinct, township, municipal, and especially appointed officers, except those mentioned in Article XV, section 1, of the Constitution of the State of Nebraska, shall, before entering upon their respective duties, take and subscribe the following oath, which shall be endorsed upon their respective bonds:
I, ......................, do solemnly swear that I will support the Constitution of the United States and the Constitution of the State of Nebraska, against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; that I take this obligation freely and without mental reservation or for purpose of evasion; and that I will faithfully and impartially perform the duties of the office of ........................, according to law, and to the best of my ability. And I do further swear that I do not advocate, nor am I a member of any political party or organization that advocates the overthrow of the government of the United States or of this state by force or violence; and that during such time as I am in this position I will not advocate nor become a member of any political party or organization that advocates the overthrow of the government of the United States or of this state by force or violence. So help me God.
If any such officer is not required to give bond, the oath shall be filed in the office of the Secretary of State, or of the clerk of the county, city, village, or other municipal subdivision of which he shall be an officer.
Neb. Rev. Stat. §§ 11-101