Maryland Code, Election Law § 3-201

(1) at a local board office or the State Board office;

(2) at a registration site administered by a local board;

(3) by mail;

(4) when applying to the Motor Vehicle Administration for the issuance, renewal, or modification of a driver's license or identification card;

(5) when applying for services at a voter registration agency;

(6) through the State Board's online voter registration system; or

(7) with the assistance of a volunteer authorized by the State or local board.