Nebraska Revised Statute 32-323
Chapter 32 Section 323
Validity of registration for petition purposes; when.
Registration pursuant to section 32-304 or 32-308 or by mail shall not constitute a valid registration for purposes of signing any type of petition requiring the validation of the signatures of registered voters until a complete and correct registration application has been received by the election commissioner or county clerk. A signature on a petition shall be considered a valid signature as of the date that the election commissioner or county clerk receives the registration application of the registrant.