D.C. Mun. Regs. tit. 3, § 1103
1103.1 A petition to recall an at-large elected official shall contain the valid signatures of ten percent (10%) of the registered qualified electors of the District of Columbia, provided that the total number of signatures submitted shall include ten percent (10%) of the registered electors in each of five (5) or more of the eight (8) election wards.
1103.2 A petition to recall an elected official from a ward shall contain the valid signatures of ten percent (10%) of the registered qualified electors of the ward from which the official was elected.
1103.3 A petition to recall an elected official from a Single-Member District shall contain the valid signatures of ten percent (10%) of the registered qualified electors of the Single-Member District from which the official was elected.
1103.4 The number of registered qualified electors used for computing these signature requirements shall be based upon the latest official count of registered qualified electors made by the Board that was issued at least thirty (30) days prior to the submission of signatures for the particular recall election.
SOURCE: Final Rulemaking published at 42 DCR 4419, 4424 (August 18, 1995); as amended by Final Rulemaking published at 57 DCR 4277 (May 14, 2010); as amended by Final Rulemaking published at 60 DCR 5582 (April 12, 2013); as amended by Final Rulemaking published at 61 DCR 625 (January 24, 2014).