Lynn Woolsey was elected to the U.S. House in 1992 with 66 percent of the vote defeating Republican Bill Filante. She was re-elected in 1994 with 58 percent, defeating Republican Michael Nugent.
In 1996, she was re-elected with 62 percent of the vote, defeating Republican Duane Hughes. She won re-election in 1998 defeating Republican Ken McAuliffe with 58 percent of the vote.
Woolsey beat McAuliffe again in 2000, this time with 64 percent of the vote. She was re-elected in 2002, defeating Paul Erickson with 67 percent of the vote.
Woolsey was elected to two terms on the Petaluma City Council, serving 1985-92.