California State Legislature, 2019–2020 session

The 2019–2020 session was a session of the California State Legislature. The session first convened on December 3, 2018 and adjourned sine die on November 30, 2020.

Vacancies and special elections

 * January 7, 2019: Republican senator Ted Gaines (1st–El Dorado Hills) resigns to take a seat on the California State Board of Equalization while Democratic Senator Ricardo Lara (33rd–Bell Gardens) resigns to become California Insurance Commissioner.
 * June 12, 2019: Republican assemblymember Brian Dahle and Democratic Councilwoman Lena Gonzalez (Long Beach) is sworn into office after winning June 4 special elections for the 1st Senate district to replace Gaines (Dahle) and the 33rd Senate district to replace Lara (Gonzalez).
 * November 12, 2019: Republican Megan Dahle is sworn into office after winning the special election for the 1st Assembly district to replace Brian Dahle.
 * October 30, 2019: Republican senator Jeff Stone (28th–La Quinta) resigns to become the Western Regional Director of the United States Department of Labor. Republican Melissa Melendez won a special election on May 12, 2020 and succeeded Stone on May 18. She resigned from California's 67th State Assembly district.

Leadership changes

 * January 7, 2019: Democrat Eleni Kounalakis, a former U.S. Ambassador to Hungary, is sworn in as Lieutenant Governor (and Senate President), replacing Gavin Newsom, who termed out but was elected Governor.
 * March 1, 2019: Republican senator Shannon Grove (16th–Bakersfield) replaces senator Patricia Bates (36th–Laguna Niguel) as Senate minority leader

Party changes

 * January 24, 2019: Assemblymember Brian Maienschein (77th–San Diego) changed party affiliation from Republican to Democratic.
 * December 5, 2019: Assemblymember Chad Mayes (42nd–Yucca Valley) left the Republican Party to sit as an Independent.

Officers
The Secretary, the Sergeant-at-Arms, and the chaplain are not members of the Legislature.

Officers
The Chief Clerk, the acting Chief Sergeant-at-Arms, and the chaplain are not members of the Legislature.