All 30 seats of the Arizona Senate[a] 16 seats needed for a majority
Majority party
Minority party
Party
Republican
Democratic
Seats before
2
26
Seats after
16
14
Seat change
14
12
Senate President before election
Clarence L. Carpenter[2]
Democratic
Elected Senate President
Marshall Humphrey[3]
Republican
Elections in Arizona
Federal government
Presidential elections
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 primaries
Democratic
2004
2008
2016
2020
2024
Republican
2008
2012
2016
2024
U.S. Senate elections
1912
1914
1916
1920
1922
1926
1928
1932
1934
1938
1940
1944
1946
1950
1952
1956
1958
1962
1964
1968
1970
1974
1976
1980
1982
1986
1988
1992
1994
1998
2000
2004
2006
2010
2012
2016
2018
2020 sp
2022
2024
2028
U.S. House of Representatives elections
1911
1912
1914
1916
1918
1920
1922
1924
1926
1928
1930
1932
1933
AL sp
1934
1936
1938
1940
1942
1944
1946
1948
1950
1952
1954
1956
1958
1960
1961
2nd sp
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1991
2nd sp
1992
1994
1996
1998
2000
2002
2004
2006
8th
2008
2010
2012
8th sp
2014
2016
2018
8th sp
2020
2022
2024
State government
State elections
2006
2010
2014
2016
2018
2020
2022
2024
Gubernatorial elections
1911
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
1974
1978
1982
1986
1990
1994
1998
2002
2006
2010
2014
2018
2022
2026
Secretary of State elections
2014
2018
2022
Attorney General elections
2018
2022
Treasurer elections
2022
Superintendent elections
2018
2022
Senate elections
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
2006
2008
2010
2012
2014
2016
2018
2020
2022
2024
House of Representatives elections
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
2006
2018
2020
2022
2024
Ballot measures
List of Arizona ballot propositions
2000
203
2004
200
2006
107
204
207
2008
102
2010
100
203
2020
207
Phoenix
Mayoral elections
2011
2015
2018–19 (sp)
2020
2024
Tucson
Mayoral elections
1991
1995
1999
2003
2007
2011
2015
2019
2023
Other localities
Gilbert
2012
Glendale
2012
2016
Maricopa County
2024
Mesa
2008
2012
2020
2024
Scottsdale
2008
2012
v
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e
The 1966 Arizona Senate election was held on November 8, 1966. Voters elected all 30 members of the Arizona Senate to serve two-year terms. Following the landmark Reynolds v. Sims (1964) US Supreme Court decision, every state had to redraw state electoral districts to be approximately equal in population. Before Reynolds, the Arizona Senate consisted of 28 members with two elected Senators from each of the state's 14 counties. After the ruling, the Arizona Senate shifted to electoral districts.[4]
Primary elections were held on September 13, 1966.[5]
Prior to the elections, the Democrats held a supermajority of 26 seats over the 2 Republican seats.
Following the election, Republicans flipped control of the chamber and took a majority of 16 Republicans to 14 Democrats, a net gain of 14 seats for Republicans.[6]
The newly elected senators served in the 28th Arizona State Legislature.
^"Rules of the Arizona Senate: 28th Legislature 1967-1968". Arizona Secretary of State.
^"27th Arizona State Senate, taken in Phoenix". Arizona Secretary of State.
^"28th Arizona State Senate in Phoenix". Arizona Secretary of State.
^"Rules of the Arizona Senate: 28th Legislature 1967-1968". Arizona Secretary of State.
^"1966 State of Arizona official canvass, primary election". Arizona Secretary of State.
^"1966 State of Arizona official canvass, general election". Arizona Secretary of State.
Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).
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