D.C. Mun. Regs. tit. 3, § 1003
1003.1 In order for an initiative or referendum measure to obtain ballot access, it must be supported by a petition filed with the Board that contains the valid signatures of at least five percent (5%) of the registered qualified electors of the District of Columbia, provided that the total number of signatures submitted shall include at least five percent (5%) of the registered qualified electors in at least five (5) of the eight (8) election wards.
1003.2 The maximum number of signatures that the Board will accept for filing is two (2) times the minimum number of signatures as required by this section. Working from the first page of a petition that has been serially numbered pursuant to S subsection 1005.2 of this chapter, the Board shall only accept for filing the maximum number of signatures that may be filed pursuant to this section.
1003.3 The Board shall use the latest official count of registered qualified electors made at least thirty (30) days prior to submission of the signatures for the particular initiative or referendum measure to determine the minimum number of signatures required for ballot access.
SOURCE: Final Rulemaking published at 43 DCR 103 (January 12, 1996); as amended by Final Rulemaking published at 47 DCR 6977 (August 27, 1999); 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); as amended by Final Rulemaking published at 61 DCR 7021 (July 11, 2014).