New Jersey Statutes Title 19. Elections 19 § 36-2

a. When a vacancy shall happen in the college of electors, or when an elector shall fail to attend, by the hour of three o'clock in the afternoon of the day fixed by congress for the meeting of the college of electors, at the place of holding such meeting, those of such electors who shall be assembled at the hour and place shall immediately proceed to fill by a majority of votes such vacancy.

b. If the members of the electoral college shall have been nominated and elected as representing different political parties, any vacancy occurring shall be filled by the elector or electors representing the same political party as the absent elector; and if there shall be no elector present representing the same political party as the absent elector, then such vacancy shall be filled by a majority of the electors present, who shall choose some person of the political party which the absent elector represents.

c. Notwithstanding the provisions of subsections a. and b. of this section, in any year in which, on July 20, the “Agreement Among the States to Elect the President by National Popular Vote” is in effect in states cumulatively possessing a majority of the electoral votes, and the State of New Jersey remains a member of that agreement, any vacancy in the college of electors shall be filled in accordance with the provisions of section 1 of this act, P.L.2007, c. 334 (C.19:36-4).