Neb. Rev. Stat. § 32-712: Neb. Rev. Stat. § 32-712

Not later than September 8 prior to any general election at which candidates for President and Vice President of the United States are to be voted upon by the registered voters of the state, the appropriate officers of the various national political party conventions shall certify the names and addresses of such candidates selected by convention to the Secretary of State. The Secretary of State shall then take appropriate steps to place the names of the presidential and vice-presidential candidates on the ballot.