Iowa's 4th Congressional District election, 2026 (June 2 Democratic primary)

← 2024
Iowa's 4th Congressional District
Democratic primary Republican primary General election
Election details
Filing deadline: March 13, 2026
Primary: June 2, 2026 General: November 3, 2026
How to vote
Poll times: 7 a.m. to 8 p.m. Voting in Iowa
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
Iowa's 4th Congressional District U.S. Senate • 1st • 2nd • 3rd • 4th Iowa elections, 2026 U.S. Congress elections, 2026 U.S. Senate elections, 2026 U.S. House elections, 2026 Alabama U.S. House racesAlaska U.S. House raceArizona U.S. House racesArkansas U.S. House racesCalifornia U.S. House racesColorado U.S. House racesConnecticut U.S. House racesDelaware U.S. House raceFlorida U.S. House racesGeorgia U.S. House racesHawaii U.S. House racesIdaho U.S. House racesIllinois U.S. House racesIndiana U.S. House racesIowa U.S. House racesKansas U.S. House racesKentucky U.S. House racesLouisiana U.S. House racesMaine U.S. House racesMaryland U.S. House racesMassachusetts U.S. House racesMichigan U.S. House racesMinnesota U.S. House racesMississippi U.S. House racesMissouri U.S. House racesMontana U.S. House racesNebraska U.S. House racesNevada U.S. House racesNew Hampshire U.S. House racesNew Jersey U.S. House racesNew Mexico U.S. House racesNew York U.S. House racesNorth Carolina U.S. House racesNorth Dakota U.S. House raceOhio U.S. House racesOklahoma U.S. House racesOregon U.S. House racesPennsylvania U.S. House racesRhode Island U.S. House racesSouth Carolina U.S. House racesSouth Dakota U.S. House raceTennessee U.S. House racesTexas U.S. House racesUtah U.S. House racesVermont U.S. House raceVirginia U.S. House racesWashington U.S. House racesWest Virginia U.S. House racesWisconsin U.S. House racesWyoming U.S. House raceSubmit

A Democratic Party primary takes place on June 2, 2026, in Iowa'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
March 13, 2026	June 2, 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 Iowa, state law provides for a closed primary where every voter must be affiliated with a party in order to participate in its primary. However, a voter can change his or her political party affiliation on the day of the primary.

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

This page focuses on Iowa'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:

• Iowa's 4th Congressional District election, 2026 (June 2 Republican primary)
• Iowa'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
  

Note: At this time, Ballotpedia is combining all declared candidates for this election into one list under a general election heading. As primary election dates are published, this information will be updated to separate general election candidates from primary candidates as appropriate.

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.

Voting information

See also: Voting in Iowa

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

Campaign finance

There are currently no declared candidates in this race. Know of one we missed? Click here to let us know.

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.

• District map
• Competitiveness
• Presidential elections
• State party control

Below is the district map in place for this election. Click the map below to enlarge it.

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+15. This meant that in those two presidential elections, this district's results were 15 percentage points more Republican than the national average. This made Iowa's 4th the 68th most Republican district nationally.

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 Iowa's 4th Congressional District

Kamala Harris	Donald Trump
34.0%	65.0%

Presidential voting history

See also: Presidential election in Iowa, 2024

Iowa presidential election results (1900-2024)

• 11 Democratic wins
• 21 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	R	R	R	R	D	D	R	R	D	R	R	R	D	R	R	R	R	R	D	D	D	D	R	D	D	R	R	R

See also: Party control of Iowa state government

Congressional delegation

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

Congressional Partisan Breakdown from Iowa
Party	U.S. Senate	U.S. House	Total
Democratic	0	0	0
Republican	2	4	6
Independent	0	0	0
Vacancies	0	0	0
Total	2	4	6

State executive

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

State executive officials in Iowa, October 2025

Office	Officeholder
Governor	Kim Reynolds
Lieutenant Governor	Chris Cournoyer
Secretary of State	Paul Pate
Attorney General	Brenna Bird

State legislature

Iowa State Senate

Party		As of October 2025
	Democratic Party	16
	Republican Party	33
	Other	0
	Vacancies	1
Total		50

Iowa House of Representatives

Party		As of October 2025
	Democratic Party	33
	Republican Party	66
	Other	0
	Vacancies	1
Total		100

Trifecta control

Iowa Party Control: 1992-2025
Four years of Democratic trifectas  •  Eleven 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	D	D	D	D	D	D	D	D	D	D	D	D	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R
Senate	D	D	D	D	D	R	R	R	R	R	R	R	R	S	S	D	D	D	D	D	D	D	D	D	D	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	D	D	D	D	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 Iowa in the 2026 election cycle. For additional information on candidate ballot access requirements in Iowa, click here.

Filing requirements for U.S. House candidates, 2026
State	Office	Party	Signatures required	Filing fee	Filing deadline	Source
Iowa	U.S. House	Ballot-qualified party	1,726, including at least 47 signatures from ½ of the counties in the district	N/A	3/13/2026	Source
Iowa	U.S. House	Unaffiliated	1,726, including at least 47 signatures from ½ of the counties in the district	N/A	8/22/2026	Source

See also

• Iowa's 4th Congressional District election, 2026 (June 2 Republican primary)
• Iowa's 4th Congressional District election, 2026
• United States House elections in Iowa, 2026 (June 2 Democratic primaries)
• United States House elections in Iowa, 2026 (June 2 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

Suggest a link

• Search Google News for this topic

Footnotes

[show]

Iowa's current delegation to the United States Congress

Senators

Joni Ernst (R)

Chuck Grassley (R)

Representatives

District 1

Mariannette Miller-Meeks (R)

District 2

Ashley Hinson (R)

District 3

Zach Nunn (R)

District 4

Randy Feenstra (R)

Republican Party (6)

2025-2026 Elections to the United States Congress

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Election information

Ballot access for major and minor party candidates • List of candidates running for election • List of congressional challengers • Retiring senators • Retiring representatives

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Super PACs/Organizations

American Bridge 21st Century • American Crossroads • American Unity PAC • Campaign for Primary Accountability • Club for Growth Action • Congressional Leadership Fund • Cooperative of American Physicians IE Committee• Crossroads Generation • Ending Spending Action Fund • Endorse Liberty • Fair Share Action • FreedomWorks for America • Government Integrity Fund • House Majority PAC • Independence USA Fund • League of Conservation Voters • Liberty for All PAC • Majority PAC • National Association of Realtors • NEA Advocacy Fund • Now or Never PAC • Planned Parenthood Votes • Ready for Hillary • Republicans for a Prosperous America • Restore America's Voice PAC • SEIU Pea-Federal • Women Vote!

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