After the polls are closed and the last elector has voted, the election officers and clerks who have been present throughout the election day may be replaced by another set of election officers, designated by the Board of Elections, which election officers shall have the same qualifications and take the same oath as prescribed in chapter 7 of this title. Before the electronic voting machine is opened, the election officers shall count the number of electors admitted to vote as shown by the district register and check such number against the number of electors admitted to vote as shown by the voting list, and against the number of electors voting as shown on the list of voters who have voted, shall announce the results, and include the result in the statement required by section 625 of this title.