Voters in New York State use a vote-scanning system that can tally votes swiftly and, in most cases, correctly. Not New York City. The city’s Board of Elections uses a creaky system of counting by hand that is prone to embarrassing errors on election night. 

On June 26, the board announced that Representative Charles Rangel had won the Democratic primary in his newly drawn district by 1,900 votes. But, in 79 of 506 precincts, the vote count was recorded as zero. Then the board recounted, and Mr. Rangel led his nearest competitor, State Senator Adriano Espaillat, by 802 votes — with 2,000 absentee ballots or affidavits still to be counted.  (MORE)