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Arizona House of Representatives District 10

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Arizona House of Representatives District 10
Incumbents
Assumed office: January 13, 2025
Assumed office: January 13, 2025

Arizona House of Representatives District 10 is represented by Ralph Heap (R) and Justin Olson (R).

As of the 2020 Census, Arizona state representatives represented an average of 119,315 residents. After the 2010 Census, each member represented 106,878 residents.

About the office

Members of the Arizona House of Representatives serve two-year terms with term limits, limiting representatives to four terms (a total of eight years).[1] Arizona legislators assume office on the first day of the session after they are elected. Each regular session begins on the second Monday in January.[2]

Qualifications

See also: State legislature candidate requirements by state

Article 4, Part 2, Section 2 of the Arizona Constitution states: "No person shall be a member of the Legislature unless he shall be a citizen of the United States at the time of his election, nor unless he shall be at least twenty-five years of age, and shall have been a resident of Arizona at least three years and of the county from which he is elected at least one year before his election."[3]

Arizona Statutes 16-311 and 16-312 state that all candidates seeking nomination via primary or write-in or must be qualified electors.[4][5]


Salaries

See also: Comparison of state legislative salaries
State legislative salaries, 2024[6]
SalaryPer diem
$24,000/yearFor legislators residing within Maricopa County: $35/day. For legislators residing outside of Maricopa County: $251.66.

Term limits

See also: State legislatures with term limits

The Arizona legislature is one of 16 state legislatures with term limits. Voters enacted the Arizona Term Limits Act in 1992. That initiative said that Arizona senators are subject to term limits of no more than four two-year terms, or a total of eight years.

The first year that the term limits enacted in 1992 impacted the ability of incumbents to run for office was 2000.[7]


Vacancies

See also: How vacancies are filled in state legislatures

If there is a vacancy in the Arizona State Legislature, the board of county supervisors must select a replacement. The secretary of state is required to contact the state party chairperson to give notice of the vacancy. The state chairperson must give notice of a meeting to fill the seat within three business days of receiving notice.[8] The political party committee is involved in the appointment process only if the legislative district has thirty or more elected precinct committeemen.[8]

If the legislative district has 30 or more elected precinct committeemen:

  • The precinct committeemen must nominate three qualified electors as replacements. If the Legislature is in session, this must occur within five days. If the Legislature is out of session, the committeemen have 21 days to nominate potential replacements. Each elector must receive a majority of the committeemen's vote to earn a nomination. The chair then forwards the three nominees to the board of supervisors. The board of supervisors appoints a nominee from the three names. If the committeemen do not submit a list of names within the allotted timeframe, the board of supervisors proceeds with the vacancy as if the district had fewer than 30 elected precinct committeemen.[8]

If the legislative district has fewer than 30 elected precinct committeemen:

  • The board of supervisors appoints a panel of citizen supervisors within seven business days of a vacancy occurring. The citizen panel must submit the name of three qualified electors of the same political party as the previous incumbent to the board of supervisors. If the Legislature is in session, this must occur within five days. If the Legislature is out of session, the committeemen have 21 days to nominate potential replacements. The board of supervisors must select a replacement by a majority vote.[9]
  • The person selected to fill the seat serves the remainder of the unfilled term.[9]

DocumentIcon.jpg See sources: Arizona Rev. Stat. Ann. §41-1202


District map

Redistricting

2020 redistricting cycle

See also: Redistricting in Arizona after the 2020 census

On January 24, 2022, Arizona enacted new legislative maps after the Arizona Independent Redistricting Commission transmitted its finalized plans to the secretary of state.[10] The commission initially voted to finalize and certify the legislative map plan on Jan. 21.[11] The commission's nonpartisan chairwoman, Erika Neuberg, joined the two Republican members—David Mehl and Douglas York—voting in favor of the map. The commission's two Democratic members—Shereen Lerner and Derrick Watchman—were opposed.[12] This map took effect for Arizona's 2022 legislative elections.

The commission previously voted in favor of the legislative map by a 3-2 vote on December 22, 2021, which was followed by a period for counties to request administrative changes before the final vote on Jan. 21.[13]

How does redistricting in Arizona work? The Arizona Independent Redistricting Commission is responsible for drawing both congressional and state legislative district lines. The commission is composed of five members. Of these, four are selected by the majority and minority leaders of each chamber of the state legislature from a list of 25 candidates nominated by the state commission on appellate court appointments. These 25 nominees comprise 10 Democrats, 10 Republicans, and 5 unaffiliated citizens. The four commission members appointed by legislative leaders then select the fifth member to round out the commission. The fifth member of the commission must belong to a different political party than the other commissioners. The governor, with a two-thirds vote in the Arizona State Senate, may remove a commissioner "for substantial neglect of duty, gross misconduct in office, or inability to discharge the duties of office." The Arizona State Legislature may make recommendations to the commission, but ultimate authority is vested with the commission.[14][15][16]

The Arizona Constitution requires that both congressional and state legislative districts be "contiguous, geographically compact, and respect communities of interest–all to the extent practicable." The state constitution further mandates that district lines "should [follow] visible geographic features, city, town, and county boundaries, and undivided census tracts." In addition, the constitution requires that "competitive districts be favored where doing so would not significantly detract from the goals above."[16]

Arizona House of Representatives District 10
until January 8, 2023

Click a district to compare boundaries.

Arizona House of Representatives District 10
starting January 9, 2023

Click a district to compare boundaries.

Elections

2024

See also: Arizona House of Representatives elections, 2024

General election

General election for Arizona House of Representatives District 10 (2 seats)

Justin Olson and Ralph Heap defeated Helen Hunter and Stephanie Simmons in the general election for Arizona House of Representatives District 10 on November 5, 2024.

Candidate
%
Votes
Image of Justin Olson
Justin Olson (R)
 
31.0
 
65,454
Image of Ralph Heap
Ralph Heap (R)
 
30.2
 
63,695
Image of Helen Hunter
Helen Hunter (D)
 
19.4
 
40,958
Image of Stephanie Simmons
Stephanie Simmons (D) Candidate Connection
 
19.4
 
40,926

Total votes: 211,033
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
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Democratic primary election

Democratic primary for Arizona House of Representatives District 10 (2 seats)

Helen Hunter and Stephanie Simmons advanced from the Democratic primary for Arizona House of Representatives District 10 on July 30, 2024.

Candidate
%
Votes
Image of Helen Hunter
Helen Hunter
 
96.0
 
13,477
Image of Stephanie Simmons
Stephanie Simmons (Write-in) Candidate Connection
 
4.0
 
555

Total votes: 14,032
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.

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Republican primary election

Republican primary for Arizona House of Representatives District 10 (2 seats)

Justin Olson and Ralph Heap defeated Matt Greer in the Republican primary for Arizona House of Representatives District 10 on July 30, 2024.

Candidate
%
Votes
Image of Justin Olson
Justin Olson
 
38.5
 
17,746
Image of Ralph Heap
Ralph Heap
 
35.4
 
16,335
Image of Matt Greer
Matt Greer Candidate Connection
 
26.1
 
12,016

Total votes: 46,097
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.

Do you want a spreadsheet of this type of data? Contact our sales team.

2022

See also: Arizona House of Representatives elections, 2022

General election

General election for Arizona House of Representatives District 10 (2 seats)

Justin Heap and Barbara Parker defeated Helen Hunter in the general election for Arizona House of Representatives District 10 on November 8, 2022.

Candidate
%
Votes
Image of Justin Heap
Justin Heap (R)
 
36.9
 
50,024
Image of Barbara Parker
Barbara Parker (R)
 
36.3
 
49,190
Image of Helen Hunter
Helen Hunter (D)
 
26.7
 
36,182

Total votes: 135,396
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.

Do you want a spreadsheet of this type of data? Contact our sales team.

Democratic primary election

Democratic primary for Arizona House of Representatives District 10 (2 seats)

Helen Hunter advanced from the Democratic primary for Arizona House of Representatives District 10 on August 2, 2022.

Candidate
%
Votes
Image of Helen Hunter
Helen Hunter
 
100.0
 
15,831

Total votes: 15,831
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.

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Republican primary election

Republican primary for Arizona House of Representatives District 10 (2 seats)

Justin Heap and Barbara Parker advanced from the Republican primary for Arizona House of Representatives District 10 on August 2, 2022.

Candidate
%
Votes
Image of Justin Heap
Justin Heap
 
52.1
 
24,583
Image of Barbara Parker
Barbara Parker
 
47.9
 
22,571

Total votes: 47,154
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
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2020

See also: Arizona House of Representatives elections, 2020

General election

General election for Arizona House of Representatives District 10 (2 seats)

Incumbent Domingo DeGrazia and Stephanie Stahl Hamilton defeated Michael Hicks and Mabelle Gummere in the general election for Arizona House of Representatives District 10 on November 3, 2020.

Candidate
%
Votes
Image of Domingo DeGrazia
Domingo DeGrazia (D)
 
28.6
 
59,725
Image of Stephanie Stahl Hamilton
Stephanie Stahl Hamilton (D)
 
28.4
 
59,344
Image of Michael Hicks
Michael Hicks (R)
 
22.5
 
46,950
Mabelle Gummere (R)
 
20.5
 
42,795

Total votes: 208,814
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.

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Democratic primary election

Democratic primary for Arizona House of Representatives District 10 (2 seats)

Incumbent Domingo DeGrazia and Stephanie Stahl Hamilton defeated Paul Stapleton-Smith in the Democratic primary for Arizona House of Representatives District 10 on August 4, 2020.

Candidate
%
Votes
Image of Domingo DeGrazia
Domingo DeGrazia
 
41.7
 
22,411
Image of Stephanie Stahl Hamilton
Stephanie Stahl Hamilton
 
36.8
 
19,783
Paul Stapleton-Smith
 
21.5
 
11,577

Total votes: 53,771
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.

Do you want a spreadsheet of this type of data? Contact our sales team.

Republican primary election

Republican primary for Arizona House of Representatives District 10 (2 seats)

Michael Hicks and Mabelle Gummere advanced from the Republican primary for Arizona House of Representatives District 10 on August 4, 2020.

Candidate
%
Votes
Image of Michael Hicks
Michael Hicks
 
57.9
 
18,013
Mabelle Gummere
 
42.1
 
13,123

Total votes: 31,136
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.

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2018

General election

General election for Arizona House of Representatives District 10 (2 seats)

Incumbent Kirsten Engel and Domingo DeGrazia defeated incumbent Todd Clodfelter and Joshua Reilly in the general election for Arizona House of Representatives District 10 on November 6, 2018.

Candidate
%
Votes
Image of Kirsten Engel
Kirsten Engel (D)
 
35.5
 
49,163
Image of Domingo DeGrazia
Domingo DeGrazia (D)
 
30.8
 
42,716
Image of Todd Clodfelter
Todd Clodfelter (R)
 
27.9
 
38,697
Joshua Reilly (G)
 
5.7
 
7,896

Total votes: 138,472
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.

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Democratic primary election

Democratic primary for Arizona House of Representatives District 10 (2 seats)

Incumbent Kirsten Engel and Domingo DeGrazia defeated Nikki Lee and Catherine Ripley in the Democratic primary for Arizona House of Representatives District 10 on August 28, 2018.

Candidate
%
Votes
Image of Kirsten Engel
Kirsten Engel
 
39.4
 
16,895
Image of Domingo DeGrazia
Domingo DeGrazia
 
21.0
 
9,000
Image of Nikki Lee
Nikki Lee
 
20.0
 
8,585
Image of Catherine Ripley
Catherine Ripley
 
19.6
 
8,421

Total votes: 42,901
(100.00% precincts reporting)
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.

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Republican primary election

Republican primary for Arizona House of Representatives District 10 (2 seats)

Incumbent Todd Clodfelter advanced from the Republican primary for Arizona House of Representatives District 10 on August 28, 2018.

Candidate
%
Votes
Image of Todd Clodfelter
Todd Clodfelter
 
100.0
 
18,673

Total votes: 18,673
(100.00% precincts reporting)
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.

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Green primary election

Green primary for Arizona House of Representatives District 10 (2 seats)

Joshua Reilly advanced from the Green primary for Arizona House of Representatives District 10 on August 28, 2018.

Candidate
%
Votes
Joshua Reilly
 
100.0
 
25

Total votes: 25
(100.00% precincts reporting)
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.

Do you want a spreadsheet of this type of data? Contact our sales team.

2016

See also: Arizona House of Representatives elections, 2016

Elections for the Arizona House of Representatives 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.[17] Incumbent Bruce Wheeler (D) did not seek re-election.

Todd Clodfelter and Kirsten Engel defeated incumbent Stefanie Mach in the Arizona House of Representatives District 10 general election.[18][19]

Arizona House of Representatives, District 10 General Election, 2016
Party Candidate Vote % Votes
     Republican Green check mark transparent.png Todd Clodfelter 33.57% 45,627
     Democratic Green check mark transparent.png Kirsten Engel 33.50% 45,530
     Democratic Stefanie Mach Incumbent 32.94% 44,770
Total Votes 135,927
Source: Arizona Secretary of State


Incumbent Stefanie Mach and Kirsten Engel defeated Courtney Frogge in the Arizona House of Representatives District 10 Democratic Primary.[20]

Arizona House of Representatives, District 10 Democratic Primary, 2016
Party Candidate Vote % Votes
     Democratic Green check mark transparent.png Stefanie Mach Incumbent 35.93% 12,674
     Democratic Green check mark transparent.png Kirsten Engel 33.12% 11,684
     Democratic Courtney Frogge 30.95% 10,916
Total Votes 35,274
Source: Associated Press


Todd Clodfelter ran unopposed in the Arizona House of Representatives District 10 Republican Primary.[21]

Arizona House of Representatives, District 10 Republican Primary, 2016
Party Candidate
    Republican Green check mark transparent.png Todd Clodfelter  (unopposed)

2014

See also: Arizona House of Representatives elections, 2014

Elections for the Arizona House of Representatives took place in 2014. A primary election took place on August 26, 2014. The general election was held on November 4, 2014. The signature filing deadline for candidates wishing to run in this election was May 28, 2014. Incumbents Stefanie Mach and Bruce Wheeler were unopposed in the Democratic primary. William Wildish and Todd Clodfelter were unopposed in the Republican primary. Mach and Wheeler defeated Wildish and Clodfelter in the general election.[22][23][24][25]

Arizona House of Representatives District 10, General Election, 2014
Party Candidate Vote % Votes
     Democratic Green check mark transparent.pngBruce Wheeler Incumbent 27.5% 32,731
     Democratic Green check mark transparent.pngStefanie Mach Incumbent 26.2% 31,163
     Republican Todd Clodfelter 25.1% 29,940
     Republican William Wildish 21.2% 25,240
Total Votes 119,074

2012

See also: Arizona House of Representatives elections, 2012

Elections for the office of Arizona House of Representatives consisted of a primary election on August 28, 2012, and a general election on November 6, 2012. The signature filing deadline for candidates wishing to run in this election was May 30, 2012. Incumbent Bruce Wheeler and fellow Democrat Stefanie Mach defeated Republican candidates Todd Clodfelter and Ted Vogt in the general election. Wheeler and Mach defeated Brandon Patrick in the August 28 Democratic primary. Clodfelter and Vogt faced no primary opposition.[26][27][28][29]

Arizona House of Representatives, District 10, General Election, 2012
Party Candidate Vote % Votes
     Democratic Green check mark transparent.pngBruce Wheeler Incumbent 27.4% 43,058
     Democratic Green check mark transparent.pngStefanie Mach 26% 40,843
     Republican Ted Vogt Incumbent 24% 37,758
     Republican Todd A. Clodfelter 22.6% 35,609
Total Votes 157,268
Arizona House of Representatives, District 10 Democratic Primary, 2012
Candidate Vote % Votes
Green check mark transparent.pngBruce Wheeler Incumbent 39% 12,235
Green check mark transparent.pngStefanie Mach 36.7% 11,525
Brandon Patrick 24.3% 7,614
Total Votes 31,374

Campaign contributions

From 2000 to 2024, candidates for Arizona House of Representatives District 10 raised a total of $2,818,444. Candidates who raised money in contributions earned $40,847 on average. All figures come from Follow the Money

Campaign contributions, Arizona House of Representatives District 10
Year Amount Candidates Average
2024 $199,075 5 $39,815
2022 $42,332 3 $14,111
2020 $221,040 5 $44,208
2018 $275,745 6 $45,957
2016 $233,792 4 $58,448
2014 $138,985 4 $34,746
2012 $223,673 6 $37,279
2010 $223,379 6 $37,230
2008 $488,916 8 $61,115
2006 $329,711 4 $82,428
2004 $167,761 4 $41,940
2002 $156,104 6 $26,017
2000 $117,932 8 $14,742
Total $2,818,444 69 $40,847


See also

External links

Footnotes

  1. Arizona State Legislature, "Term limits," accessed December 16, 2013
  2. Arizona Revised Statutes, "41-1101, Section B," accessed November 22, 2016
  3. Arizona State Legislature, "2. Qualifications of members of legislature," accessed May 21, 2025
  4. Arizona Legislature, "16-311," accessed May 29, 2025
  5. Arizona Legislature, "16-312," accessed May 29, 2025
  6. National Conference of State Legislatures, "2024 Legislator Compensation," August 21, 2024
  7. Arizona Attorney General, "Legislative Term Limits," accessed February 8, 2021
  8. 8.0 8.1 8.2 Arizona Legislature, "Arizona Revised Statutes," accessed February 8, 2021 (Statute 41.1202 (A), Arizona Revised Statutes)
  9. 9.0 9.1 Arizona Legislature, "Arizona Revised Statutes," accessed February 8, 2021 (Statute 41.1202 (B), Arizona Revised Statutes)
  10. Phone conversation with Valerie Neumann, AIRC executive assistant, Jan. 25, 2022]
  11. Arizona Independent Redistricting Commission, "Official Maps," accessed Jan. 21, 2022
  12. Tucson Sentinel, "Arizona Redistricting Commission gives final certification to new election maps," Jan. 21, 2022
  13. Arizona Mirror, "Republicans hold the edge as Arizona redistricting nears completion," Dec. 17, 2021
  14. Supreme Court of the United States, "Arizona State Legislature v. Arizona Independent Redistricting Commission, et al. - Appellant's Jurisdictional Statement," accessed March 6, 2015
  15. Arizona Independent Redistricting Commission, "Home page," accessed March 6, 2015
  16. 16.0 16.1 All About Redistricting, "Arizona," accessed April 17, 2015
  17. Arizona Secretary of State, "Elections Calendar & Upcoming Events," accessed January 11, 2016
  18. Arizona Secretary of State, "General election ," accessed September 9, 2016
  19. Arizona Secretary of State, "2016 official general election results," accessed November 11, 2016
  20. Arizona Secretary of State, "2016 Election Information - Primary Candidate List," accessed June 3, 2016
  21. Arizona Secretary of State, "2016 Election Information - Primary Candidate List," accessed June 3, 2016
  22. Arizona Secretary of State, "Official primary election results," accessed August 27, 2014
  23. Arizona Secretary of State, "2014 Primary Election," May 27, 2014
  24. Arizona Secretary of State, "Official general election candidate list," accessed September 11, 2014
  25. Arizona Secretary of State, "Official general election results," accessed August 3, 2015
  26. Arizona Secretary of State, “Official 2012 General Election Results,” December 18, 2013
  27. “Arizona Secretary of State”, “Official 2012 General Election Candidates”, December 18, 2013
  28. Arizona Secretary of State, “Official 2012 Primary Results,” December 18, 2013
  29. Arizona Secretary of State, “Official 2012 Primary Candidates,” December 18, 2013


Current members of the Arizona House of Representatives
Leadership
Speaker of the House:Steve Montenegro
Majority Leader:Michael Carbone
Minority Leader:Oscar De Los Santos
Representatives
District 1
District 2
District 3
District 4
District 5
District 6
District 7
District 8
District 9
District 10
District 11
District 13
District 14
District 15
District 16
District 17
District 18
District 19
Lupe Diaz (R)
District 20
District 22
District 23
District 24
District 25
District 26
District 27
Lisa Fink (R)
District 28
District 29
District 30
Republican Party (33)
Democratic Party (27)