The 1930 Idaho gubernatorial election was held on November 4. Democratic nominee C. Ben Ross, mayor of Pocatello, defeated Republican nominee John McMurray with 56.03% of the vote. Ross' victory broke a streak of six consecutive election wins (1918–28) by Republicans; he was re-elected in 1932 and 1934.
General election.
Results.
! scope="col" colspan="2" style="width: 130px"|Party
! scope="col" style="width: 17em"|Candidate
! scope="col" style="width: 5em"|Votes
! scope="col" style="width: 3.5em"|%
! scope="col" style="width: 3.5em"| ;templatestyles src="Template:Tooltip/styles.css" / ;±%
! colspan="3" style="text-align: right; margin-right: 0.5em" | Majority
! colspan="3" style="text-align: right; margin-right: 0.5em" scope=row | Turnout
! style="text-align:right;" | Swing
References.
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