Would the Gov appoint a successor, or is there an election, as in Mass?
Not sure. Depends on how the Legislature in NJ has it set up. In MA, when Mitt was Gov. the Dem controlled Legislature changed the law so that he could NOT appoint someone to the Senate in the event that John Kerry won the White House. Then they wanted to try to change it back, after Teddy the Swimmer died. Buncha goons.