The 2018 California gubernatorial election was held on November 6, 2018, to elect the Governor of California, concurrently with elections for the rest of California's executive branch, as well as elections to the United States Senate and elections to the United States House of Representatives and various state and local elections. Incumbent Democratic Governor Jerry Brown was ineligible to run for re-election for a third consecutive term due to term limits from the Constitution of California. The race was between the incumbent Democratic Lieutenant Governor Gavin Newsom and businessman John H. Cox, a Republican, who qualified for the general election after placing first and second in the June 5, 2018, primary election.

Gavin Christopher Newsom is an American politician and businessman serving since 2019 as the 40th governor of California. A member of the Democratic Party, he was the 49th lieutenant governor of California from 2011 to 2019 and the 42nd mayor of San Francisco from 2004 to 2011.