# 1966 United States Senate election in Wyoming

Elections in Wyoming :
Federal government
Presidential elections
1892
1896
1900
1904
1908
1912
1916
1920
1924
1928
1932
1936
1940
1944
1948
1952
1956
1960
1964
1968
1972
1976
1980
1984
1988
1992
1996
2000
2004
2008
2012
2016
2020
2024
Presidential caucuses
Democratic
2004
2008
2012
2016
2020
2024
Republican
2008
2012
2016
2024
U.S. Senate elections
1890
1895
1895 sp
1899
1901
1905
1907
1911
1913
1916
1918
1922
1924
1928
1930
1930 sp
1934
1934 sp
1936
1940
1942
1946
1948
1952
1954
1954 sp
1958
1960
1962 sp
1964
1966
1970
1972
1976
1978
1982
1984
1988
1990
1994
1996
2000
2002
2006
2008
2008 sp
2012
2014
2018
2020
2024
2026
U.S. House of Representatives elections
1890
1892
1894
1896
1898
1900
1902
1904
1906
1908
1910
1912
1914
1916
1918
1920
1922
1924
1926
1928
1930
1932
1934
1936
1938
1940
1942
1944
1946
1948
1950
1952
1954
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1989 sp
1990
1992
1994
1996
1998
2000
2002
2004
2006
2008
2010
2012
2014
2016
2018
2020
2022
2024 :
State government
General elections
1890
1894
1898
1902
1904
1906
1910
1914
1918
1922
1926
1930
1934
1938
1942
1946
1950
1952
1954
1958
1962
1966
1970
1974
1978
1982
1986
1990
1998
2002
2006
2010
2014
2016
2018
2020
2022
2024
Gubernatorial elections
1890
1892 sp
1894
1898
1902
1904 sp
1906
1910
1914
1918
1922
1924 sp
1926
1930
1932 sp
1934
1938
1942
1946
1950
1954
1958
1962
1966
1970
1974
1978
1982
1986
1990
1994
1998
2002
2006
2010
2014
2018
2022
2026
Secretary of State elections
2014
2018
2022
Senate elections
2012
2014
2016
2018
2020
2022
2024
House of Representatives elections
2012
2014
2016
2018
2020
2022
2024 :
Cheyenne
Mayoral elections
2000
2004
2008
2012
2016
2020
2024 :
Casper
Mayoral elections
2017
2021
2025 :
Gillette
Mayoral elections
2018
2022
2022 :
Laramie
Mayoral elections
2017
2021
2025 :
vte :
The 1966 United States Senate election in Wyoming was held on November 8, 1966. First-term Republican Senator Milward Simpson, who was first elected in the 1962 special election, declined to seek re-election because of his declining health. Governor Clifford Hansen won the Republican primary and faced Democratic Congressman Teno Roncalio in the general election. Despite the strong performance by Republicans nationwide, and the strong Republican victory in the gubernatorial election, the race was quite close. Hansen ended up winning, defeating Roncalio with 52% of the vote.

## Democratic primary
### Candidates

* Teno Roncalio, U.S. Congressman from Wyoming's at-large congressional district

### Results

Democratic primary :
| Party | Party | Candidate | Votes | % |
| | Democratic | Teno Roncalio | 39,130 | 100.00% |
| Total votes | Total votes | Total votes | 39,130 | 100.00% |

## Republican primary
### Candidates

* Clifford Hansen, Governor of Wyoming
* Bud Kinney, perennial candidate

### Results

Republican primary :
| Party | Party | Candidate | Votes | % |
| | Republican | Clifford Hansen | 40,102 | 86.11% |
| | Republican | Bud Kinney | 6,468 | 13.89% |
| Total votes | Total votes | Total votes | 46,570 | 100.00% |

## General election
### Results

1966 United States Senate election in Wyoming :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Clifford Hansen | 63,548 | 51.80% | −6.04% |
| | Democratic | Teno Roncalio | 59,141 | 48.20% | +6.04% |
| Majority | Majority | Majority | 4,407 | 3.59% | −12.09% |
| Turnout | Turnout | Turnout | 122,689 | | |
| | Republican hold | Republican hold | Republican hold | Republican hold | Republican hold |