Neb. Rev. Stat. § 49-205: Neb. Rev. Stat. § 49-205

If a majority of the electors voting on any such amendment adopt the same, provided the votes cast in favor of such amendment shall not be less than thirty-five percent of the total votes cast at such election, the Governor, within ten days after the result is ascertained, shall make proclamation declaring the proposed amendment or amendments to be a part of the Constitution of the state.