Dan Garvey became governor upon the death of Sidney Osborn on May 25, 1948. Garvey appointed Curtis Williams to fill the vacancy for Secretary of State and Williams served the remainder of the term.
Source for Popular Vote data: Arizona Secretary of State. Official Canvass General Election Returns, November 5, 1946, Arizona Secretary of State (https://azmemory.azlibrary.gov/nodes/view/282073) (accessed 19 Nov 2023)