Maryland Code, Election Law § 5-706

(1) a candidate selected by a political party to fill a vacancy in nomination under Subtitle 9 or Subtitle 10 of this title; or

(2) a candidate defeated in a presidential preference primary.

(b)(1) Except as provided in subsection (c) of this section, the name of a candidate who is defeated for the nomination for a public office may not appear on the ballot at the next succeeding general election as a candidate for any office.

(2) A candidate who is defeated for the nomination for a public office may not file a certificate of candidacy as a write-in candidate at the next succeeding general election as a candidate for any office.