D.C. Mun. Regs. tit. 3, § 515
515.1 A registered voter shall notify the Board, in writing, within thirty (30) days, of a name change due to marriage, divorce or by order of a court.
515.2 Prior to the thirtieth (30th) day preceding an election, a registered voter may give notice of change of name by:
(a) Completing a change of name on a Voter Registration Application;
(b) Filing a change of name by signed letter or postal card which includes the following information;
(i) Former and current name;
(ii) Address; and
(iii) Date of birth.
(c) Filing a change of name through the DMV or a voter registration agency pursuant to D.C. Code § 1-1001.07(d) (2006 Repl.);
(d) Completing any other form prescribed for this purpose by the Board.
515.3 On or after the thirtieth (30th) day preceding an election, a registered voter may change his or her name in-person at the Board's office. Requests for change of name other than those made in-person during the thirty (30) days that immediately precede and include the date of the election shall be held and processed after the election.
515.4 The effective date of any change of name, for voter registration purposes, shall be the date that the notice of change is received by the Board, unless the notice of change of name is held and processed after the election, as described in § 515.3.
SOURCE: Final Rulemaking published at 43 D.C. Reg. 1078, 1089-90 (March 1, 1996); as amended by Final Rulemaking published at 43 D.C. Reg. 1927 (April 12, 1996); and as amended by Final Rulemaking published at 57 D.C. Reg. 3267, 3284 (April 16, 2010).