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Arizona State Senate elections

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This page displays election information for the Arizona State Senate.

Elections

Arizona state senators serve two-year terms, with all seats up for election every two years. Arizona holds elections for its legislature in even years.

2026

See also: Arizona State Senate elections, 2026

Elections for the Arizona State Senate will take place in 2026. The general election is on November 3, 2026. The primary is August 4, 2026. The filing deadline is April 6, 2026.

2024

See also: Arizona State Senate elections, 2024

Elections for the Arizona State Senate took place in 2024. The general election was on November 5, 2024. The primary was July 30, 2024. The filing deadline was April 1, 2024.

In the 2024 elections, Republicans increased their majority in the Arizona State Senate by one seat, shifting the balance from 16-14 to 17-13.

Arizona State Senate
Party As of November 5, 2024 After November 6, 2024
     Democratic Party 14 13
     Republican Party 16 17
Total 30 30

2022

See also: Arizona State Senate elections, 2022

Elections for the Arizona State Senate took place in 2022. The general election was on November 8, 2022. A primary was scheduled for August 2, 2022. The filing deadline was April 4, 2022.

In the 2022 elections, Republicans maintained their 16-14 majority

Arizona State Senate
Party As of November 8, 2022 After November 9, 2022
     Democratic Party 14 14
     Republican Party 16 16
Total 30 30

2020

See also: Arizona State Senate elections, 2020

Elections for the office of Arizona State Senate took place in 2020. The general election was held on November 3, 2020. A primary was scheduled for August 4, 2020. The filing deadline was April 6, 2020.

Heading into the election, Republicans held a 17-13 majority. Republicans lost one seat in the election, giving them a 16-14 majority.

Arizona State Senate
Party As of November 3, 2020 After November 4, 2020
     Democratic Party 13 14
     Republican Party 17 16
Total 40 40

2018

See also: Arizona State Senate elections, 2018

Elections for the Arizona State Senate took place in 2018. A hybrid primary election took place on August 28, 2018.[1] The general election was held on November 6, 2018. The filing deadline for candidates wishing to appear on the primary ballot was May 30, 2018. The filing deadline for write-in primary candidates was July 19, 2018. The filing deadline for write-in general election candidates was September 27, 2018.[2]

In the 2018 elections, there was no changed in the partisan balance of the Arizona State Senate.

Arizona State Senate
Party As of November 6, 2018 After November 7, 2018
     Democratic Party 13 13
     Republican Party 17 17
Total 30 30

2016

See also: Arizona State Senate elections, 2016

Elections for the Arizona State Senate took place in 2016. The primary election took place on August 30, 2016, and the general election was held on November 8, 2016. The candidate filing deadline was June 1, 2016. All 30 seats in the Arizona State Senate were up for election in 2016.

Heading into the election, Republicans held an 18-12 majority. Republicans lost one seat in the election, giving them a 17-13 majority.

Arizona State Senate
Party As of November 7, 2016 After November 8, 2016
     Democratic Party 12 13
     Republican Party 18 17
Total 30 30



Historical party control

Republicans won control of the Arizona State Senate in 2002. In 2024, they won a 17-13 majority.

The table below shows the partisan history of the Arizona Senate following every general election from 1992 to 2022. All data from 2006 or earlier comes from Michael Dubin's Party Affiliations in the State Legislatures (McFarland Press, 2007). Data after 2006 was compiled by Ballotpedia staff.

Arizona State Senate election results: 1992-2024

Year '92 '94 '96 '98 '00 '02 '04 '06 '08 '10 '12 '14 '16 '18 '20 '22 '24
Democrats 12 11 12 14 15* 13 12 13 12 9 13 13 13 13 14 14 13
Republicans 18 19 18 16 15* 17 18 17 18 21 17 17 17 17 16 16 17
* The 15-15 split led to a power-sharing agreement between the parties.

Before 1992

Arizona achieved statehood in 1912. From 1912 to 1966, Democrats controlled the state Senate after nearly every election. Starting in 1966, Republicans began winning narrow majorities in the chamber, with Democrats winning control in three elections: 1974, 1976, and 1990.


Trifecta history

A state government trifecta is a term that describes single party government, when one political party holds the governor's office and has majorities in both chambers of the legislature in a state government. Between 1992 and 2023, Arizona was under the following types of trifecta control:

  • Democratic trifecta: None
  • Republican trifecta: 1993-2000, 2009-2022
  • Divided government: 1992, 2001-2008, 2023

Arizona Party Control: 1992-2025
No Democratic trifectas  •  Twenty-two years of Republican trifectas
Scroll left and right on the table below to view more years.

Year 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Governor R R R R R R R R R R R D D D D D D R R R R R R R R R R R R R R D D D
Senate R R R R R R R R R S S R R R R R R R R R R R R R R R R R R R R R R R
House R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R

Footnotes

  1. ↑ Arizona State Legislature, "Arizona Election Laws & Publications," accessed June 7, 2017
  2. ↑ Arizona Secretary of State, "Running for Legislative Office," accessed October 13, 2017
  3. ↑ Follow the Money, "Arizona 2010 Senate Campaign Contributions," accessed April 23, 2015
  4. ↑ Follow the Money, "Arizona 2008 Candidates," accessed April 10, 2013
  5. ↑ Follow the Money, "Arizona 2006 Candidates," accessed April 10, 2013
  6. ↑ Follow the Money, "Arizona 2004 Candidates," accessed April 10, 2013
  7. ↑ Follow the Money, "Arizona 2002 Candidates," accessed April 10, 2013
  8. ↑ Follow the Money, "Arizona 2000 Candidates," accessed April 10, 2013
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