Democrat Dianne Feinstein, California's senior U.S. senator, won an easy reelection victory over nonprofit executive Elizabeth Emken, her underfunded, little-known Republican challenger.
Feinstein, 78, was running for her fourth full term against Emken, 49, an autism activist from Danville whose only previous run was a failed primary bid for a congressional seat.
Emken had support, but received little financial help, from the California Republican Party.
She raised just $677,000 to Feinstein's more than $9.1 million, filings with the federal government show.
Emken's challenge was heightened by the Republican Party's registration slide in California and Feinstein's popularity and reputation for political moderation.