Maryland Election Law Section 10-305

      (a)      If there is a vacancy in the polling place staff during voting hours:

            (1)      the local board may fill the vacancy with a substitute election judge who has been recruited and trained; or

            (2)      an election judge who is present at the polling place may fill the position of the absent election judge by appointing a person registered with the same party affiliation as the absent election judge.

      (b)      If a substitute election judge is appointed under subsection (a) of this section:

            (1)      either the election director, the election director's designee, or the election judge making the substitute appointment shall administer the oath required under § 10-204 of this title; and

            (2)      a chief election judge shall document any change in the polling place staff in the records of the polling place.