D.C. Code § 1-204.35
Section 203 of D.C. Law 19-120 amended section 202 of D.C. Law 18-160 to read as follows:
"Sec. 202. Applicability.
"Section 201 shall apply upon its ratification by a majority of the registered qualified electors of the District of Columbia voting in a referendum held for such purpose and a 35-day period of Congressional review as provided in section 303 of the District of Columbia Home Rule Act, approved December 24, 1973 (87 Stat. 784; D.C. Official Code § 1-203.03 ), and publication in the District of Columbia Register.".
Section 3 of Pub. L. 112-145 provided that the amendments made by section 2 of the act shall apply with respect to vacancies occurring on or after July 18, 2012.