The 1978 Missouri State Auditor election was held on 7 November 1978 in order to elect the state auditor of Missouri. Republican nominee James Antonio defeated Democratic nominee and former governor of Missouri Warren E. Hearnes.
General election.
On election day, 7 November 1978, Republican nominee James Antonio won the election by a margin of 56,549 votes against his opponent Democratic nominee Warren E. Hearnes, thereby gaining Republican control over the office of state auditor. Antonio was sworn in as the 32nd state auditor of Missouri on 8 January 1979.
Results.
! scope="col" colspan="2" style="width: 15em" |Party
! scope="col" style="width: 17em" |Candidate
! scope="col" style="width: 5em" |Votes
! scope="col" style="width: 3.5em" |%
! colspan="3" style="text-align:right;" | Total votes
References.
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