1934 California gubernatorial election

The 1934 California gubernatorial election was held on November 6, 1934. Held in the midst of the Great Depression, the 1934 election was amongst the most controversial in the state's political history, pitting conservative Republican Frank Merriam against former Socialist Party member turned Democrat Upton Sinclair, author of The Jungle. A strong third party challenge came from Progressive Raymond L. Haight, a Los Angeles lawyer campaigning for the political center. Much of the campaign's emphasis was directed at Sinclair's EPIC movement, proposing interventionist reforms to cure the state's ailing economy. Merriam, who had recently assumed the governorship following the death of James Rolph, characterized Sinclair's proposal as a step towards communism.

Negative campaigning funded by the film industry was used against Sinclair to favor the Merriam campaign, as depicted in the 2020 American biographical drama film Mank.