D.C. Mun. Regs. tit. 3, § 1612
1612.1 Each person eligible to vote in the initial election for the office of U.S. Senator may cast a ballot for no more than two (2) candidates in the contest.
1612.2 At the time of certification of the initial general election results for the office U.S. Senator, the Board shall certify the two (2) individuals receiving the highest number of votes in as the winners of the contest.
1612.3 In accordance with D.C. Official Code § 1-123(d)(2) (1999 Repl.), the term of office of the candidate receiving the highest number shall receive the longer term; the candidate receiving the second highest number of votes shall receive the lesser term.
SOURCE: Final Rulemaking published at 36 D.C. Reg. 8364, 8370-71 (December 15, 1989).