D.C. Mun. Regs. tit. 3, § 909
909.1 Within a reasonable period of time after receiving notice from the D.C. Board of Elections and Ethics of a vacancy in a non-party affiliated at-large seat, the Council of the District of Columbia shall appoint a qualified elector who is not affiliated with any political party.
909.2 The elector appointed Councilmember at-large shall fill the office until the D.C. Board of Elections and Ethics holds a special election and certifies the winner, as provided by D.C. Official Code § 1-204.01(d)(2) (2006 Repl.).
909.3 The elector appointed to the Council pursuant to the Charter and this chapter shall, within thirty (30) days of the appointment, comply with the requirements of D.C. Official Code § 1-1106.02(a) and (b) (2006 Repl. & 2011 Supp.).
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 58 DCR 8058 (September 16, 2011).