The 1908 Delaware gubernatorial election was held on November 3, 1908. Though some Republicans had interest in nominating incumbent Governor Preston Lea to a second term, the state convention instead named former State Senator Simeon S. Pennewill as the Republican nominee. In the general election, Pennewill faced Democratic nominee Rowland G. Paynter, a physician. Pennewill ultimately defeated Paynter by a relatively slim margin, continuing the Republican streak in Delaware gubernatorial elections.
General election.
! 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
References.
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