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1966
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US Senate
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South Dakota
1966
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US Senate
·
South Dakota
South Dakota US Senate
Winner
REP
Karl E. Mundt
66.3%
150,517 votes
Runner-up
DEM
Donn H. Wright
33.7%
76,563 votes
Margin
R+32.6
227,080
total votes
2 candidates
227,080 total votes
Export CSV
Candidate
Party
Votes ▼
%
Vote Share
Karl E. Mundt
REP
✓
REP
150,517
66.3%
Donn H. Wright
DEM
DEM
76,563
33.7%
Seat History
US Senate in South Dakota
(Class I)
2022
John R Thune
REP
R+43.5
2020
Michael Rounds
REP
R+31.5
2016
John R Thune
REP
R+43.7
2014
Michael Rounds
REP
R+20.9
2010
John R Thune
REP
R+100.0
2008
Timothy V Johnson
DEM
D+25.0
2004
John R Thune
REP
R+1.1
2002
Timothy V Johnson
DEM
D+0.2
1998
Thomas A Daschle
DEM
D+25.7
1996
Timothy V Johnson
DEM
D+2.6
1992
Thomas A Daschle
DEM
D+32.4
1990
Larry Pressler
REP
R+7.3
1986
Thomas A Daschle
DEM
D+3.2
1984
Larry Pressler
REP
R+49.0
1980
James Abdnor
REP
R+18.8
View all US Senate history for South Dakota →
Candidates
Donn H. Wright
DEM
Record
0W-1L
Avg Margin
R+32.6
Career
1966-1966
US Senate
Full profile →
Karl E. Mundt
REP
Record
4W-0L
Avg Margin
R+17.7
Career
1948-1966
US Senate
Full profile →
Also in South Dakota, 1966
Governor
1 contest →
← All 1966 US Senate races
1966 overview
South Dakota profile
All elections