Ellen Tauscher was considered a legitimate threat to incumbent Republican Rep. Bill Baker during their 1996 10th District U.S. House race because of her family's wealth. Tauscher represented Baker's first serious challenge in four runs for the seat representing affluent suburbs east of San Francisco Bay. Tauscher's then-husband was estimated to hold between $23 million and $28 million in his company's stock.
Tauscher made family issues a centerpiece of her campaign, which was successful. She won by a 1.5 percent margin after a $2.6 million campaign, fourth-highest of that year's 435 House races.
She was re-elected in 1998 defeating Republican Charles Ball with 53 percent of the vote. She won again in 2000 with 53 percent against GOP candidate Claude Hutchison. She won the March 2002 open primary against Democrat Kurt Rasmussen with 84.9 percent of the votes.
She was re-elected in the 2002 general election, defeating Sonia Harden with 76 percent of the vote.