a. As used in this section, “public agency” shall mean:
The Division of Worker's Compensation, the Division of Employment Services and the Division of Unemployment and Temporary Disability Insurance, established initially by section 5 of P.L.1948, c. 446 (C.34:1A-5), in the Department of Labor and Workforce Development;
The Division of Taxation in the Department of the Treasury, continued under section 24 of P.L.1948, c. 92 (C.52:18A-24);
The New Jersey Transit Corporation, established pursuant to section 4 of P.L.1979, c. 150 (C.27:25-4);
Any free county library established under the provisions of article 1 of chapter 33 of Title 40 of the Revised Statutes;
Any regional library established under the provisions of P.L.1962, c. 134 (C.40:33-13.3 et seq.);
Any free public library established under the provisions of article 1 of chapter 54 of Title 40 of the Revised Statutes;
Any joint free public library established under the provisions of P.L.1959, c. 155 (C.40:54-29.3 et seq.);
Any public institution of higher education as included under the provisions of N.J.S.18A:62-1;
Any eligible institution, as defined by subsection a. of section 3 of P.L. 1979, c. 132 (C.18A:72B-17), that receives financial assistance, aid, or grants from State funds;
Any office or commercial establishment where State licenses or permits, other than licenses or permits issued by a professional or occupational board established under the laws of this State, are available to individual members of the public; and
Any recruitment office of the New Jersey National Guard.
b. Any person entitled to register to vote may register as a voter in the election district in which that person resides at any time prior to the twenty-ninth 21st day preceding any election by completing a registration form described in section 16 of P.L.1974, c. 30 (C.19:31-6.4) and submitting the form to the commissioner of registration of the county wherein the person resides or alternatively, in the case of a registration form provided by the employees or agents of a public agency or a voter registration agency, as defined in subsection a. of section 26 of P.L.1994, c. 182 (C.19:31-6.11), to those employees or agents or to the Attorney General. Any registration form addressed to a commissioner of registration may be mailed to or delivered to the office of that commissioner, and in the case of a registration form available at a public agency, the form shall be mailed to the Attorney General or delivered to the commissioner of registration in the county of the registrant. A registration form postmarked, stamped or otherwise marked as having been received from the registration applicant, on or before the twenty-ninth 21st day preceding any election shall be deemed timely.