Maryland Code, Real Property § 11-139.2

(a) Notwithstanding language contained in the governing documents of the council of unit owners, the board of directors of the council of unit owners may authorize unit owners to submit a vote or proxy by electronic transmission if the electronic transmission contains information that verifies that the vote or proxy is authorized by the unit owner or the unit owner's proxy.

(b) If the governing documents of the council of unit owners require voting by secret ballot and the anonymity of voting by electronic transmission cannot be guaranteed, voting by electronic transmission shall be permitted if unit owners have the option of casting anonymous printed ballots.