Maryland Code, Courts and Judicial Proceedings § 8-306

(1) Is at least 70 years old and asks the jury commissioner, in writing, for an exemption;

(2) Is an elected official of the federal Legislative Branch, as defined in 2 U.S.C. § 30a;

(3) Is an active duty member of the armed forces exempted in accordance with 10 U.S.C. § 982; or

(4) Is a member of the organized militia exempted in accordance with § 13-218 of the Public Safety Article.