D.C. Mun. Regs. tit. 3, § 906
906.1 When the Delegate to the House of Representatives resigns his or her office prior to expiration of the term, the resignation shall be in writing and in triplicate.
906.2 The Delegate shall forward one (1) triplicate original of the resignation to the Mayor, one (1) triplicate original to the Speaker of the House of Representatives, and one (1) triplicate original to the Chairperson of the D.C. Board of Elections.
906.3 Within five (5) working days of receipt of the resignation, the Board shall certify the seat vacant effective as provided by the resignation and issue the appropriate notification as provided in this chapter.
906.4 When the Delegate to the House of Representatives dies while still serving his or her term of office, the Board shall within five (5) working days of notice of the death of the Delegate to the House of Representatives, certify the seat vacant, effective as of the date of the death, and issue the appropriate notification as provided in this chapter.
906.5 When a vacancy in the office of Delegate to the House of Representatives is declared by court order, the Board shall, as soon as practicable after the court declaration, notify the Mayor of the vacancy by registered mail.
SOURCE: Final Rulemaking published at 28 DCR 1726 (April 17, 1981), incorporating the text of Proposed Rulemaking published at 28 DCR 403 (January 23, 1981); as amended by Final Rulemaking published at 39 DCR 4166, 4167 (June 12, 1992); as amended by Final Rulemaking published at 58 DCR 8058 (September 16, 2011); as amended by Final Rulemaking published at 62 DCR 14744 (November 13, 2015); as amended by Final Rulemaking published at 72 DCR 004710 (April 18, 2025).