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Kansas' 4th Congressional District election, 2026 (August 4 Republican primary)

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← 2024
Kansas' 4th Congressional District
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Democratic primary
Republican primary
General election
Election details
Filing deadline: June 1, 2026
Primary: August 4, 2026
General: November 3, 2026
How to vote
Poll times:

7 a.m. to 7 p.m.
Voting in Kansas

Race ratings
Cook Political Report: Solid Republican
DDHQ and The Hill: Pending
Inside Elections: Solid Republican
Sabato's Crystal Ball: Safe Republican
Ballotpedia analysis
U.S. Senate battlegrounds
U.S. House battlegrounds
Federal and state primary competitiveness
Ballotpedia's Election Analysis Hub, 2026
See also
Kansas' 4th Congressional District
U.S. Senate • 1st • 2nd • 3rd • 4th
Kansas elections, 2026
U.S. Congress elections, 2026
U.S. Senate elections, 2026
U.S. House elections, 2026

A Republican Party primary takes place on August 4, 2026, in Kansas' 4th Congressional District to determine which Republican candidate will run in the district's general election on November 3, 2026.

Candidate filing deadline Primary election General election
June 1, 2026
August 4, 2026
November 3, 2026



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. In Kansas, parties decide who may vote in their primaries. As of October 2025, the Democratic Party held an open primary and the Republican Party held a closed primary. Regardless of the party's rules, an unaffiliated voter can declare their affiliation with a party on the day of the primary and vote in that party's primary. Previously affiliated voters who want to change their affiliation to vote in a different party's primary must do so before the candidate filing deadline, which is June 1 or the next business day.[1][2]

For information about which offices are nominated via primary election, see this article.

This page focuses on Kansas' 4th Congressional District Republican primary. For more in-depth information on the district's Democratic primary and the general election, see the following pages:

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

Republican primary

Republican primary for U.S. House Kansas District 4

Incumbent Ron Estes (R) is running in the Republican primary for U.S. House Kansas District 4 on August 4, 2026.

Candidate
Image of Ron Estes
Ron Estes

Incumbents are bolded and underlined.

Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
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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 Kansas

Ballotpedia will publish the dates and deadlines related to this election as they are made available.

Campaign finance

Name Party Receipts* Disbursements** Cash on hand Date
Ron Estes Republican Party $885,577 $592,674 $1,491,179 As of September 30, 2025

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."
** According to the FEC, a disbursement "is a purchase, payment, distribution, loan, advance, deposit or gift of money or anything of value to influence a federal election," plus other kinds of payments not made to influence a federal election.

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.

2023_01_03_ks_congressional_district_04.jpg
See also: Primary election competitiveness in state and federal government, 2026
Information about competitiveness will be added here as it becomes available.

Partisan Voter Index

See also: The Cook Political Report's 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 R+12. This meant that in those two presidential elections, this district's results were 12 percentage points more Republican than the national average. This made Kansas' 4th the 103rd most Republican district nationally.[3]

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.

2024 presidential results in Kansas' 4th Congressional District
Kamala Harris Democratic Party Donald Trump Republican Party
37.0% 61.0%

Presidential voting history

See also: Presidential election in Kansas, 2024

Kansas presidential election results (1900-2024)

  • 5 Democratic wins
  • 27 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 R R R D D R R R D D R R R R R R D R R R R R R R R R R R R R R R
See also: Party control of Kansas state government

Congressional delegation

The table below displays the partisan composition of Kansas' congressional delegation as of October 2025.

Congressional Partisan Breakdown from Kansas
Party U.S. Senate U.S. House Total
Democratic 0 1 1
Republican 2 3 5
Independent 0 0 0
Vacancies 0 0 0
Total 2 4 6

State executive

The table below displays the officeholders in Kansas' top four state executive offices as of October 2025.

State executive officials in Kansas, October 2025
Office Officeholder
Governor Democratic Party Laura Kelly
Lieutenant Governor Democratic Party David Toland
Secretary of State Republican Party Scott Schwab
Attorney General Republican Party Kris Kobach

State legislature

Kansas State Senate

Party As of October 2025
     Democratic Party 9
     Republican Party 31
     Other 0
     Vacancies 0
Total 40

Kansas House of Representatives

Party As of October 2025
     Democratic Party 37
     Republican Party 88
     Other 0
     Vacancies 0
Total 125

Trifecta control

Kansas Party Control: 1992-2025
No Democratic trifectas  •  Sixteen years of Republican trifectas

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 D D D R R R R R R R R D D D D D D D D R R R R R R R R D D D D D D D
Senate 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
House D 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 Kansas in the 2026 election cycle. For additional information on candidate ballot access requirements in Kansas, click here.

Filing requirements for U.S. House candidates, 2026
State Office Party Signatures required Filing fee Filing deadline Source
Kansas U.S. House Ballot-qualified party Two percent of the party’s total voter registration from the district One percent of the salary of the office plus a $20 administrative fee 6/1/2026 Source
Kansas U.S. House Unaffiliated Four percent of the registered voters from the district; at least 25 signatures of Kansas voters but no more than 5,000 voters N/A 8/3/2026 Source

See also

External links

Footnotes

  1. ↑ Kansas Office of Revisor of Statutes, "Kan. Stat. Ann. § 25–3301," accessed October 15, 2025
  2. ↑ Kansas Office of Revisor of Statutes, "Kan. Stat. Ann. § 25–3304," accessed October 15, 2025
  3. ↑ Cook Political Report, "2025 Cook PVI℠: District Map and List (119th Congress)," accessed July 1, 2025


Kansas' current delegation to the United States Congress
Senators
Roger Marshall (R)
Jerry Moran (R)
Representatives
District 1
District 2
District 3
District 4
Ron Estes (R)
Republican Party (5)
Democratic Party (1)


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