(son of Rush D. Holt), a Representative from New Jersey; born in Weston, Lewis County, W. Va., October 15, 1948; graduated from the Landon School, Bethesda, Md., 1966; B.A., Carleton College, Northfield, Minn., 1970; M.S., New York University, New York, N.Y., 1974; Ph.D., New York University, New York, N.Y., 1981; Congressional Science Fellow with United States House of Representatives, Office of Representative Bob Edgar of Pennsylvania, 1982-1983; faculty, Swarthmore College, Swarthmore, Pa., 1980-1988; acting chief, Nuclear and Scientific Division, Office of Strategic Forces, United States Department of State, 1987-1989; assistant director, Princeton Plasma Physics Laboratory, 1989-1997; elected as a Democrat to the One Hundred Sixth and to the seven succeeding Congresses (January 3, 1999-present).