The vote by the board’s executive committee last week was unanimous, according to two sources on the committee, and is expected to be announced next week.
The vote would represent a significant boost for Mr. Barron, who has lagged significantly in both union endorsements and fundraising.
Reached by phone last week, Mr. Barron said that the backing of the city’s largest public sector union would be “huge” and a “game-changer.”
The duo are in a Democratic primary to replace Ed Towns, who announced his retirement last month. Mr. Barron, a former Black Panther and three-term member of the City Council, ran against Mr. Towns in 2006 only to lose by
eight ten points.
Mr. Jeffries, meanwhile, made a name for himself in Albany with his work on criminal justice and good government issues, and has been backed by most of the political leadership in the district.