Kammala jumla mai zuwa: An gudanar da zaben shugaban kasa na Republican na Missouri na 2012 a ranar 7 ga Fabrairu kuma caucuses ya gudana daga Maris 15 zuwa Maris 24, 2012, sai dai daya da aka sake tsarawa a ranar 10 ga Afrilu. Zaɓen farko bai ƙayyade wane wakilai za a aika zuwa majalisar ba.
taron kasa; wannan a maimakon haka an ƙaddara ta hanyar kai tsaye ta hanyar caucuses kuma kai tsaye ta Missouri Republican congressional-district conventions Afrilu 21 da kuma taron jihar Yuni 2.