The state has been represented by 48 people in the Senate since it was admitted to the Union on September 9, 1850. Its U.S. senators are Democrats Alex Padilla and Adam Schiff . Dianne Feinstein was the state's longest serving senator, serving from 1992 until her death in 2023., SACRAMENTO — Governor Gavin Newsom today announced the selection of Laphonza Butler — the President of the nation’s largest organization dedicated to electing women, EMILY’s List — to complete the United States Senate term of the late Senator Dianne Feinstein, which runs through 2024., California’s current U.S. Senators are Alex Padilla (D) and Adam Schiff (D). Alex Padilla has served since 2021. Adam Schiff has served since 2024. California’s next U.S. Senate election is in 2028. Senate Majority PAC is working to continue supporting Democratic candidates up and down the ballot., Laphonza Butler is set to make history as the first LGBTQ+ person to represent California in the Senate. California Gov. Gavin Newsom (D) appointed her just two days after the death of Sen., Vice President Kamala Harris, right, and Laphonza Butler reenact Butler’s swearing-in on Capitol Hill as California’s new U.S. senator Tuesday as Butler’s wife, Neneki Lee, holds the, .