Ku sii qor faqradan - Ka dib markii uu ku guuleystay dib u doorashadii 1946, Warren wuxuu bilaabay qorsheynta inuu u tartamo madaxweynaha doorashadii 1948. Labada musharax ee ugu sareeya magacaabista waxay ahaayeen Dewey iyo Robert Taft, laakiin Warren, Harold Stassen, Arthur Vandenberg, iyo General Douglas MacArthur mid waliba wuxuu lahaa taageero muhiim ah. Ka hor Shirweynihii Qaranka ee Jamhuuriga 1948
Warren wuxuu isku dayay in uu isu muujiyo musharax madow oo u muuqda musharax la isku raacsan yahay. Si kastaba ha ahaatee, Dewey wuxuu ku guuleystay magacaabista codbixinta saddexaad ee shirweynaha. Dewey wuxuu mar kale weydiistay Warren inuu u adeego sidii saaxiibkiis, markan Warren wuu aqbalay. Si aad ah uga horeeya codbixinta madaxweyne Harry S. Truman, musharaxa xisbiga Dimuqraadiga, Dewey wuxuu sameeyay olole taxaddar leh oo inta badan diiradda lagu saaray sheekooyinka halkii ay ka ahaan lahaayeen arrimaha. Warren wuxuu olole waddanka oo dhan uga dhigay magaca tigidhka, laakiin wuxuu ka niyad jabay awood la'aantiisa inuu taageero siyaasadaha gaarka ah. Waxaa yaab ku noqotay dad badan in Truman uu ku guuleystay doorashada, waana doorashadii kaliya ee Warren uu ku guuldareystay.