Maryland Election Law Section 8-201

      (a)      (1)      There shall be a statewide primary election in every even-numbered year.

            (2)      A primary election shall be held:

                  (i)      in the year in which the Governor is elected, on the second Tuesday after the first Monday in September; and

                  (ii)      in the year in which the President of the United States is elected, on the first Tuesday in March.

      (b)      In Baltimore City, there shall be a primary election for municipal offices on the second Tuesday following the first Monday in September in the year following the election of the Governor.