Maryland Labor and Employment Section 4-210
§ 4-210.
  (a)   The Mediation Service shall conduct each consent election by secret ballot.
  (b)   (1)   If at least 2 labor organizations are to be on the ballot for a consent election, a labor organization promptly may ask the Mediation Service to allow its name to be removed from the ballot.
    (2)   A decision of the Mediation Service under this subsection is final.
  (c)   Subject to any limitation that the Mediation Service sets, each party to a consent election may designate 1 or more observers to represent the party during the consent election.
  (d)   (1)   For good cause, a party to a consent election or the Mediation Service may challenge the eligibility of an individual to vote in the consent election.
    (2)   The Mediation Service shall impound each challenged ballot.