Md. Code, Elec. Law § 5-304

(a) (1) A certificate of candidacy may be filed: (i) in person; or (ii) if authorized by subsection (b) of this section, by certified mail, personal messenger, or other delivery service designated by the filer. (2) A certificate of candidacy may not be filed by facsimile service or other electronic transmission. (b) A certificate of candidacy may be filed as permitted under subsection (a)(1)(ii) of this section, if: (1) the individual filing the certificate is unable to do so in person because of illness, service in the uniformed services, or temporary absence from the State; and (2) the certificate is accompanied by an affidavit signed by the individual filing the certificate setting forth fully the facts that prevent that individual from filing the certificate in person. (c) On the certificate of candidacy form prescribed by the State Board, the candidate shall specify: (1) the office, including, if applicable, the party, district, and circuit to which the candidacy relates; (2) the year of the election; (3) the name of the individual filing the certificate; (4) the address on the statewide voter registration list or the current address of that individual; (5) a statement that the individual satisfies the requirements of law for candidacy for the office for which the certificate is being filed; and (6) any information requested by the State Board to verify the accuracy of the information provided by the individual under this subsection. (d) The certificate of candidacy shall be accompanied by: (1) a filing fee satisfying the requirements of § 5–401 of this title; (2) a separate form, unless such a form has previously been filed, establishing a campaign finance entity under Title 13 of this article; (3) evidence that the individual has filed: (i) a financial disclosure statement with the State Ethics Commission in accordance with the requirements of Title 5, Subtitle 6 of the General Provisions Article; or (ii) any other financial disclosure report required by law; and (4) any additional information required by the State Board. (e) The appropriate board shall accept the certificate of candidacy if it determines that all requirements are satisfied.