N.J. Stat. § 19:63-2
As used in this act, unless otherwise indicated by the context:
"Election," "general election," "primary election for the general election," "municipal election," "school election," and "special election" mean, respectively, such elections as defined in R.S. 19:1-1 et seq.
"Family member" means an adult who is a spouse, parent, child, grandparent, grandchild or sibling of a voter, whether by adoption or natural relationship. It shall also include any adult occupant regularly living with a voter in any residential building or part of a building intended for the use of no more than one family.
"Mail-in ballot" means any ballot used by a mail-in voter to vote by mail in any election.
"Mail-in voter" means any qualified and registered voter of this State who wants to vote in any election using a mail-in ballot under the provisions of this act.
N.J.S. § 19:63-2