D.C. Mun. Regs. tit. 3, r. 3-1400
This chapter governs the process by which candidates for nomination for President of the United States ("candidate for presidential nominee") of each eligible political party in the District seek ballot access for the presidential preference primary.
For purposes of this chapter, unless otherwise provided, the following terms shall be defined as follows:
The governing body of each eligible political party shall file the following with the Board of Elections, no later than one hundred eighty (180) days prior to the presidential preference primary election:
The Board shall adhere to party plan procedures to the extent that such plan does not conflict with District law and regulations. If the party plan conflicts with District law and regulations, the General Counsel or his or her designee shall inform the party of the conflict.
Notwithstanding 1400.4, if a party's rules provide for candidate qualification by means other than gathering petition signatures, the candidate must comply with the rules of the candidate's political party for being listed on the ballot and the political party shall certify to the Board no later than 24 hours after the date that is 90 days before the date of such presidential preference primary election the names of candidates for nomination who have qualified by such means.
The delegates and alternates, of each political party in the District of Columbia to the national convention of that party convened for the nomination of that party for President shall be obliged to vote only for the candidate whom the delegate or alternate has been selected to represent in accordance with properly promulgated rules of the political party, on the 1st ballot cast at the convention for nominees for President, or until such time as such candidate to whom the delegate is committed withdraws the candidate's candidacy, whichever occurs first.
D.C. Mun. Regs. tit. 3, r. 3-1400