The New Jersey Constitution of 1947 (Annotated) Art. V, § I, ¶ 7

7. In the event of the failure of the Governor-elect to qualify, or of the absence from the State of a Governor in office, or the Governor's inability to discharge the duties of the office, or the Governor's impeachment, the functions, powers, duties and emoluments of the office shall devolve upon the Lieutenant Governor, until the Governor-elect qualifies, or the Governor in office returns to the State, or is no longer unable to discharge the duties of the office, or is acquitted, as the case may be, or until a new Governor is elected and qualifies.  In the event that the Lieutenant Governor in office is absent from the State, or is unable to discharge the duties of the office, or is impeached, or if the Lieutenant Governor-elect fails to qualify, or if there is a vacancy in the office of Lieutenant Governor, the functions, powers, duties, and emoluments of the office of Governor shall devolve upon the President of the Senate.  In the event there is a vacancy in the office of the President of the Senate, or of the Senate President's absence from the State, inability to discharge the duties of the office, or impeachment, then such functions, powers, duties, and emoluments shall devolve upon the Speaker of the General Assembly.  In the event there is a vacancy in the office of Speaker of the General Assembly, or of the Speaker's absence from the State, inability to discharge the duties of the office, or impeachment, then such functions, powers, duties, and emoluments shall devolve upon such officers and in the order of succession as may be provided by law.  The functions, powers, duties, and emoluments of the office of Governor shall devolve upon the President of the Senate, the Speaker of the General Assembly or another officer, as the case may be, until the Governor-elect or Lieutenant Governor-elect qualifies, or the Governor or Lieutenant Governor in office returns to the State, or is no longer unable to discharge the duties of the office, or is acquitted, or until a new Lieutenant Governor is appointed, as the case may be, or a new Governor or Lieutenant Governor is elected and qualifies.