As soon as practicable after a formal order by the D.C. Board of Elections or a court declaring any vacancy in the offices enumerated in § 900.1, the Board publish notice of the vacancy in the D.C. Register and on the Board's website.
If a formal order by the Board or a court is entered declaring a vacancy in a party-affiliated at-large seat on the Council, the Board shall inform the Chairperson of the party to which the Councilmember belongs of the vacancy by registered mail and of the rules directing the required action.
If a formal order by the Board or a court is entered declaring a vacancy in a non- party-affiliated at-large seat on the Council, the Board shall inform the Council of the District of Columbia of the vacancy and of the rules relating to the appropriate action.
D.C. Mun. Regs. tit. 3, r. 3-907