D.C. Mun. Regs. tit. 3, § 516
516.1 A registered voter who moves from the address at which he or she is registered to vote shall notify the Board, in writing, of the current residence address.
516.2 Prior to the thirtieth (30th) day preceding an election, a registered voter may give notice of change of address by:
(a) Completing a change of address on a Voter Registration Application;
(b) Filing a change of address by signed letter or postal card which includes the following information;
(i) The voter's name;
(ii) Former and current address; and
(iii) Date of birth.
(c) Filing a change of address 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.
516.3 On or after the thirtieth (30th) day preceding an election, a registered voter may change his or her address in-person at the Board's office or on election day at the polling place serving the current residence pursuant to D.C. Code § 1-1001.07(i)(4)(A) (2006 Repl.). Requests for change of address 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.
516.4 The effective date of the change of address shall be the date that the change is considered to be received by the Board, unless the notice of change of address is held and processed after the election, as described in § 516.3.
SOURCE: Final Rulemaking published at 43 D.C. Reg. 1078, 1090-91 (March 1, 1996); as amended by Final Rulemaking published at 56 D.C. Reg. 4738, 4741 (June 19, 2009); and as amended by Final Rulemaking published at 57 D.C. Reg. 3267, 3285 (April 16, 2010).