Anna Eshoo was elected to the U.S. House in 1992 with 57 percent of the vote, defeating Republican Tom Huening. She was re-elected in 1994 with 61 percent of the vote, defeating Republican Ben Brink.
In 1996, she was re-elected with 65 percent of the vote, defeating Brink again. Eshoo was elected to a fourthHouse term in 1998, defeating Republican Chris Haugen with 69 percent of the vote. Eshoo defended her seat in 2000 against GOP candidate Bill Quraishi with 70 percent of the vote.
She was re-elected in 2002, defeating Joseph Nixon with 68 percent of the vote.
She was elected to the San Mateo County Board of Supervisors in 1982, 1986 and 1990. She ran unsuccessfully for Congress in 1988 against Republican Tom Campbell, who was then a state legislator.