D.C. Mun. Regs. tit. 6, r. 6-B512
The procedures set forth in this section apply to an election conducted on-site, unless otherwise agreed to by the parties and approved by the Board.
The agent of the Board or other impartial body must designate the areas in proximity to the polling place in which electioneering will be prohibited.
The agent of the Board or other impartial body must examine the ballot box in the presence of the observers immediately before opening the polls and must seal the ballot box following the observers' inspection of the polls and the ballot box. The seal must allow for only one opening on the top of the ballot box for voters to insert their ballots.
A voter casts a ballot by marking an (X) or a (v) in a circle or block designating the voter's choice in the election.
If a voter inadvertently spoils a ballot, the voter may return the ballot to the agent of the Board or other impartial body who must give the voter another ballot. The spoiled ballot must be placed in a "spoiled ballot" envelope. The envelope must be sealed by the agent of the Board or other impartial body and initialed by the observers. The agent of the Board or other impartial body must place the envelope in the ballot box.
A voter should fold the ballot so that no part of its face is exposed and on leaving the voting booth deposit the ballot in the ballot box.
Each ballot box must be sealed by the agent of the Board or other impartial body and initialed by the observers after each election session and so kept until the reopening of the polls and must remain in the custody of the agent of the Board or other impartial body until the tallying of the ballots.
Upon request of a voter, the agent of the Board or other impartial body may privately assist the voter to mark the ballot.
Upon conclusion of the polling, ballots will be tallied in accordance with § 514.
If there is only one polling location, ballots will be tallied at the polling site. If there is more than one polling location, the agent of the Board or other impartial body must, upon conclusion of the voting, seal the ballot boxes, each of which must be initialed by the observers. The agent of the Board or other impartial body must transport them to a predetermined central location. When all of the ballot boxes have arrived, the agent of the Board or other impartial body must open the ballot boxes in the presence of observers and commingle the ballots for tallying.
D.C. Mun. Regs. tit. 6, r. 6-B512