Md. Code, Alcoholic Beverages and Cannabis § 21–405

(a) This section applies to a Class 4 limited winery license in the county.

(b) A license holder may open on Sundays to engage in the activities listed in § 2–206(b)(7) of this article only in an election district or a precinct in an election district where the voters, in a referendum authorized by law, have approved Sunday sales at a winery.