1920 United States Senate election in Arizona

1920 United States Senate election in Arizona

← 1914 November 2, 1920 1926 →
 
Nominee Ralph H. Cameron Marcus A. Smith
Party Republican Democratic
Popular vote 35,893 29,169
Percentage 55.17% 44.83%

County results
Cameron:      50–60%      60–70%
Smith:      50–60%      60–70%

U.S. senator before election

Marcus A. Smith
Democratic

Elected U.S. Senator

Ralph H. Cameron
Republican

The 1920 United States Senate election in Arizona took place on November 2, 1920. Incumbent Democratic U.S. Senator Marcus A. Smith ran for reelection to a third term, but was defeated by former Delegate to the U.S. House of Representatives from the Arizona Territory Ralph H. Cameron in the general election. Cameron would become the first Republican elected to the office of U.S. Senator from Arizona since the state joined the union in 1912. The same year, Republican Governor Thomas Edward Campbell was reelected to a second term.