Maryland Statutes
Subtitle 3 - Polling Place Procedures
Section 10-304 - Duties of Police Officers

(a)    (1)    A police officer who is on duty at a polling place shall obey the order of an election judge for that polling place.
        (2)    A police officer making an arrest under an order of an election judge is fully protected in so doing as if the police officer received a valid warrant to make the arrest.
    (b)    A police officer who is on duty at a polling place shall protect a challenger or watcher in the discharge of the duties of the challenger or watcher.