Md. Const. IV - Judiciary Department § 12

In case of any contested election for Judges, Clerks of the Courts of Law, and Registers of Wills, the Governor shall send the returns to the House of Delegates, which shall judge of the election and qualification of the candidates at such election; and if the judgment shall be against the one who has been returned elected, or the one who has been commissioned by the Governor, the House of Delegates shall order a new election within thirty days.