Md. Code, Alcoholic Beverages and Cannabis § 28-1408
§28–1408.
An individual is eligible to sign the petition of support required under § 4–110 of this article that must be included as part of an application for a license if the individual:
(1) owns real property within 5 miles of the premises for which the license is sought; and
(2) is a registered voter in the county.