1918 California gubernatorial election

The 1918 California gubernatorial election was held on November 5, 1918. William Stephens had defeated James Rolph for the Republican nomination and won the general election in a landslide after Rolph was denied the Democratic Party's nomination. Stephens was the first governor elected with an absolute majority of the vote since Henry Gage in 1898 and won the highest share of the vote since Frederick Low in 1863.

Primary election
San Francisco mayor James Rolph, a Republican, cross-filed in both the Republican and Democratic primaries, won the Democratic primary, and received the most overall votes of any candidate in the primary election across all parties. However, because he failed to win his own party's nomination, he was barred from receiving the Democratic nomination thanks to the 1917 Hawson amendment to California electoral law, leaving the Democratic Party without a candidate. Incumbent Republican governor William Stephens won the Republican, Prohibition, and Progressive nominations. The only other primary candidate to advance to the general election was Socialist Henry H. Roser, running unopposed.

After the Democrats were left without a nominee, Theodore Arlington Bell, who had been the Democratic nominee for governor in 1906 and 1910, entered the race as an independent. His second-place finish in the general election indicated that Democrats regarded him as their de facto candidate.

Counties that flipped from Progressive to Independent

 * Marin
 * Napa
 * San Francisco
 * Solano
 * Sonoma