Some voters are waking up angry this morning, not because their candidate lost in the New York primary, but because they didn't get to vote at all. Across the city—but especially in Brooklyn—some voters showed up at their polling sites only to find their names were not on the voter rolls.

In a statement Tuesday, Mayor de Blasio said City Hall had received reports of entire blocks and buildings missing from the rolls. The state attorney general's office reported a huge spike in voter complaints. As of 7 p.m. Tuesday, it had received 700 complaints, compared to 150 in the 2012 general election.

The city's Board of Elections confirmed WNYC's finding that tens of thousands of voters were removed from the rolls. The Board purged some 126,000 Democrats from the voter rolls in Brooklyn since last fall, saying that election officials had fallen behind by six months to a year in administering voter data. Those who were dropped include 12,000 people who moved out of the borough, 44,000 who were moved from active to inactive status, and 70,000 who were removed from the inactive list.

WNYC's Brigid Bergin says it's not clear if voters were turned away as a direct result of the purge. "We really heard all manner of issues," she said. "Broken machines, poll sites that opened nearly two hours late, poll books that were missing entire sections of the alphabet."

Mayor de Blasio has ordered the New York City Board of Elections to investigate why so many Democrats were dropped. New York City Comptroller Scott Stringer says he plans to audit the Board.