Toby Nussbaum, who died Tuesday at 66, was a Westchester Democratic activist, one-time federal elector, and a philanthropist active in Jewish causes. She was also a mother of three.

She grew up in Massachusetts and in Keene, N.H., where her father owned a pharmacy. Nussbaum attended Brandeis University, where she met her future husband, Bernard Nussbaum – then studying at Harvard Law School and who later became counsel to President Clinton – at a mixer.

She first became active in Democratic politics when Mr. Nussbaum ran for state Assembly in Brooklyn in 1968.The family later moved to Scarsdale, N.Y., where she became a fixture of the Westchester County Democratic Party and served for many years as the organization’s treasurer.

She also served as finance chairman for Nita Lowey during Ms. Lowey’s successful first run for Congress, in 1988. She served as an elector for President Clinton in the 1992 election.

In 1989, after the last of her three children left home for college, the Nussbaums moved to New York City. They also purchased a second home on the water at Stamford, Conn., where she frequently hosted parties. Nussbaum became increasingly involved in Jewish charities, including the Metropolitan Council for Jewish Poverty, the America-Israel Cultural Foundation, and the UJA-Federation of New York, where she was the chairwoman of missions and led several to Israel. She sat on the board of the America-Israel Cultural Foundation, the Isaac Stern Foundation for Israeli Artists. She also served on the boards of both Brandeis and Westchester Community College.

An enthusiastic singer since childhood, Nussbaum was a longtime member of the New York Oratorio Society. She looked forward to singing alto in Handel’s “Messiah” each year at Carnegie Hall, and once accompanied the society on a tour to Russia. She also sang with the Westchester Choral Society, which shared its choir director with the Oratorio Society.

Nussbaum and her husband produced “Miss Margarida’s Way,” a play that had a brief run at the Helen Hayes Theater in 1990.

Although Nussbaum was ill in recent months, she had the consolation last week of meeting her third grandson, shortly after he was born.

Toby Nussbaum

Born Toby Sheinfeld on May 6, 1939; died January 3 at the Memorial Sloan-Kettering Cancer Center of pancreatic cancer; survived by her husband, Bernard Nussbaum; children Emily, Peter, and Frank, and three grandchildren. The funeral is today, January 5, at noon at the Temple Israel Center, 280 Old Mamaroneck Rd., in White Plains.