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Arizona's 4th Congressional District election, 2026 (August 4 Democratic primary)
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| Arizona's 4th Congressional District |
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| Democratic primary Republican primary General election |
| Election details |
| Filing deadline: April 6, 2026 |
| Primary: August 4, 2026 General: November 3, 2026 |
| How to vote |
| Poll times:
6 a.m. to 7 p.m. |
| Race ratings |
DDHQ and The Hill: Pending Inside Elections: Solid Democratic Sabato's Crystal Ball: Safe Democratic |
| Ballotpedia analysis |
| U.S. Senate battlegrounds U.S. House battlegrounds Federal and state primary competitiveness Ballotpedia's Election Analysis Hub, 2026 |
| See also |
1st • 2nd • 3rd • 4th • 5th • 6th • 7th • 8th • 9th Arizona elections, 2026 U.S. Congress elections, 2026 U.S. Senate elections, 2026 U.S. House elections, 2026 |
A Democratic Party primary takes place on August 4, 2026, in Arizona's 4th Congressional District to determine which Democratic candidate will run in the district's general election on November 3, 2026.
| Candidate filing deadline | Primary election | General election |
|---|---|---|
A primary election is an election in which registered voters select a candidate that they believe should be a political party's candidate for elected office to run in the general election. They are also used to choose convention delegates and party leaders. Primaries are state-level and local-level elections that take place prior to a general election. Arizona utilizes a semi-closed primary system. Unaffiliated voters may choose which party's primary they will vote in, but voters registered with a party can only vote in that party's primary.[1]
For information about which offices are nominated via primary election, see this article.
This page focuses on Arizona's 4th Congressional District Democratic primary. For more in-depth information on the district's Republican primary and the general election, see the following pages:
- Arizona's 4th Congressional District election, 2026 (August 4 Republican primary)
- Arizona's 4th Congressional District election, 2026
Candidates and election results
Note: The following list includes official candidates only. Ballotpedia defines official candidates as people who:
- Register with a federal or state campaign finance agency before the candidate filing deadline
- Appear on candidate lists released by government election agencies
Democratic primary election
Democratic primary for U.S. House Arizona District 4
Incumbent Greg Stanton is running in the Democratic primary for U.S. House Arizona District 4 on August 4, 2026.
Candidate | ||
 | Greg Stanton | |
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 = 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. | ||||
Candidate profiles
There are currently no candidate profiles created for this race. Candidate profiles will appear here as they are created. Encourage the candidates in this race to complete Ballotpedia's Candidate Connection survey so that their profile will appear here. You can ask candidates in this race to fill out the survey by clicking their names below:
Voting information
- See also: Voting in Arizona
Campaign finance
| Name | Party | Receipts* | Disbursements** | Cash on hand | Date |
|---|---|---|---|---|---|
| Greg Stanton | Democratic Party | $980,903 | $475,130 | $1,521,504 | As of September 30, 2025 |
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Source: Federal Elections Commission, "Campaign finance data," 2026. This product uses the openFEC API but is not endorsed or certified by the Federal Election Commission (FEC).
* According to the FEC, "Receipts are anything of value (money, goods, services or property) received by a political committee." |
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District analysis
Click the tabs below to view information about voter composition, past elections, and demographics in both the district and the state.
- District map - A map of the district in place for the election.
- Competitiveness - Information about the competitiveness of 2026 U.S. House elections in the state.
- Presidential elections - Information about presidential elections in the district and the state.
- State party control - The partisan makeup of the state's congressional delegation and state government.
Below is the district map in place for this election. Click the map below to enlarge it.
Partisan Voter Index
Heading into the 2026 elections, based on results from the 2024 and 2020 presidential elections, the Cook Partisan Voter Index for this district is D+4. This meant that in those two presidential elections, this district's results were 4 percentage points more Democratic than the national average. This made Arizona's 4th the 174th most Democratic district nationally.[2]
2020 presidential election results
The table below shows what the vote in the 2024 presidential election was in this district. The presidential election data was compiled by The Downballot.
Kamala Harris  |
Donald Trump  |
|---|---|
| 53.0% | 46.0% |
Presidential voting history
- See also: Presidential election in Arizona, 2024
Arizona presidential election results (1900-2024)
- 9 Democratic wins
- 20 Republican wins
| Year | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Winning Party | N/A | N/A | N/A | D | D | R | R | R | D | D | D | D | D | R | R | R | R | R | R | R | R | R | R | R | D | R | R | R | R | R | D | R |
Congressional delegation
The table below displays the partisan composition of Arizona's congressional delegation as of October 2025.
| Congressional Partisan Breakdown from Arizona | |||
|---|---|---|---|
| Party | U.S. Senate | U.S. House | Total |
| Democratic | 2 | 2 | 4 |
| Republican | 0 | 6 | 6 |
| Independent | 0 | 0 | 0 |
| Vacancies | 0 | 1 | 1 |
| Total | 2 | 9 | 11 |
State executive
The table below displays the officeholders in Arizona's top three state executive offices as of October 2025.
| Office | Officeholder |
|---|---|
| Governor | Katie Hobbs |
| Secretary of State | Adrian Fontes |
| Attorney General | Kris Mayes |
State legislature
Arizona State Senate
| Party | As of October 2025 | |
|---|---|---|
| Democratic Party | 13 | |
| Republican Party | 17 | |
| Other | 0 | |
| Vacancies | 0 | |
| Total | 30 | |
Arizona House of Representatives
| Party | As of October 2025 | |
|---|---|---|
| Democratic Party | 27 | |
| Republican Party | 33 | |
| Other | 0 | |
| Vacancies | 0 | |
| Total | 60 | |
Trifecta control
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 |
Ballot access
The table below details filing requirements for U.S. House candidates in Arizona in the 2026 election cycle. For additional information on candidate ballot access requirements in Arizona, click here.
| Filing requirements for U.S. House candidates, 2026 | ||||||
|---|---|---|---|---|---|---|
| State | Office | Party | Signatures required | Filing fee | Filing deadline | Source |
| Arizona | U.S. House | Democrat | 1/2 of 1% of the total qualified signers in the state as of January 2, 2026 | N/A | 4/6/2026 | Source |
| Arizona | U.S. House | Republican | 1/2 of 1% of the total qualified signers in the state as of January 2, 2026 | N/A | 4/6/2026 | Source |
| Arizona | U.S. House | Libertarian | 1/2 of 1% of the total qualified signers in the state as of January 2, 2026 | N/A | 4/6/2026 | Source |
| Arizona | U.S. House | Unaffiliated | 3% of the total registered voters who are not members of a political party that is qualified for representation as of January 2, 2026 | N/A | 4/6/2026 | Source |
See also
- Arizona's 4th Congressional District election, 2026 (August 4 Republican primary)
- Arizona's 4th Congressional District election, 2026
- United States House elections in Arizona, 2026 (August 4 Democratic primaries)
- United States House elections in Arizona, 2026 (August 4 Republican primaries)
- United States House Democratic Party primaries, 2026
- United States House Republican Party primaries, 2026
- United States House of Representatives elections, 2026
- U.S. House battlegrounds, 2026
External links
Footnotes
