ROCKVILLE, Md. (AP) — Valerie Ervin, who became the first African-American woman to serve on the Montgomery County Council when she was elected in 2006, is resigning to head a New York-based nonprofit group.

Ervin announced her resignation from the nine-member council on Tuesday. The council will appoint a successor after her departure becomes official early next month. Her successor will serve until Dec. 1, 2014.

Ervin is leaving to become the executive director of the Center for Working Families, the education and issue advocacy arm of the Working Families Party. The group promotes economic and social justice for low-income families.

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