N.J. Stat. § 32:22B-19
The five representatives from this State on the Tri-State Regional Planning Commission shall consist of the State Transportation Commissioner or his designated representative, the Commissioner of Community Affairs or his designated representative, and three public members appointed by the Governor with the advice and consent of the Senate. Two of the three appointed members shall be chosen from among the members of county boards of freeholders or mayors of municipalities in the compact region. The appointed members shall be appointed for terms of 2 years and until their successors shall have been appointed and qualify. Any vacancy in the office of an appointed member shall be filled for the unexpired term only in the same manner as the original appointment.
N.J.S. § 32:22B-19