The 1950 Arizona Senate election was held on November 7, 1950, to determine which party would control the Arizona Senate for the following two years in the 20th Arizona State Legislature. All 19 seats in the Arizona Senate were up for election. Prior to the election, all seats were held by Democrats. The general election saw Democrats retain all seats in the State Senate.

Results Source: DistrictIncumbentPartyElected SenatorPartyResultApacheEarl PlattDemHarris R. MillerDemDemocratic hold Cochise Ralph CowanDemRalph CowanDemDemocratic holdJohn PintekDemJohn PintekDemDemocratic holdCoconinoF. L. ChristensenDemCharles W. DrydenDemDemocratic hold Gila Clarence L. CarpenterDemClarence L. CarpenterDemDemocratic holdWilliam A. SullivanDemWilliam A. SullivanDemDemocratic holdGrahamWarner B. MatticeDemWarner B. MatticeDemDemocratic holdGreenleeFred J. FritzDemA. C. StantonDemDemocratic hold Maricopa John E. HuntDemJohn E. HuntDemDemocratic holdRoy D. StoneDemRoy D. StoneDemDemocratic holdMohaveClyde BollingerDemClyde BollingerDemDemocratic holdNavajoClay SimerDemClay SimerDemDemocratic hold Pima J. B. MeadDemThomas CollinsDemDemocratic holdWilliam KimballDemWilliam KimballDemDemocratic holdPinalJames Herron Jr.DemJames Herron Jr.DemDemocratic holdSanta CruzHubert O. MerryweatherDemHubert O. MerryweatherDemDemocratic hold Yavapai Sam J. HeadDemSam J. HeadDemDemocratic holdJohn R. FranksDemJohn R. FranksDemDemocratic holdYumaJoseph D. MansfieldDemHarold C. GissDemDemocratic hold

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