The 1914 United States Senate election in Arizona was held on Tuesday November 3, Incumbent United States Senator Marcus Aurelius Smith was reelected to a second term defeating state senator Don Lorenzo Hubbell, the Republican nominee, in the general election by a wide margin. Several third party candidates also ran in the election including former Prohibition Party presidential candidate Eugene W. Chafin, Socialist nominee Bert Davis Socialist, and Progressive nominee J. Bernard Nelson.
