Illinois' 1st Congressional District election, 2026 (March 17 Democratic primary)
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| Illinois' 1st Congressional District |
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| Democratic primary Republican primary General election |
| Election details |
| Filing deadline: November 3, 2025 |
| Primary: March 17, 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 |
U.S. Senate • 1st • 2nd • 3rd • 4th • 5th • 6th • 7th • 8th • 9th • 10th • 11th • 12th • 13th • 14th • 15th • 16th • 17th Illinois elections, 2026 U.S. Congress elections, 2026 U.S. Senate elections, 2026 U.S. House elections, 2026 |
A Democratic Party primary takes place on March 17, 2026, in Illinois' 1st 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 |
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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 Illinois, state law provides for a closed primary where a voter must be affiliated with a party to vote in that party's primary. However, voters state their affiliation at the polls and any voter may change their affiliation on the day of the primary. A voter's eligibility to vote a party's ballot may be challenged.[1]
For information about which offices are nominated via primary election, see this article.
This page focuses on Illinois' 1st Congressional District Democratic primary. For more in-depth information on the district's Republican primary and the general election, see the following pages:
- Illinois' 1st Congressional District election, 2026 (March 17 Republican primary)
- Illinois' 1st Congressional District election, 2026
Candidates and election results
Democratic primary election
Democratic primary for U.S. House Illinois District 1
Incumbent Jonathan Jackson and Joely Faren King are running in the Democratic primary for U.S. House Illinois District 1 on March 17, 2026.
Candidate | ||
 | Jonathan Jackson | |
 | Joely Faren King | |
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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 Illinois
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 |
|---|---|---|---|---|---|
| Jonathan Jackson | Democratic Party | $132,010 | $166,876 | $18,822 | As of September 30, 2025 |
| Joely Faren King | Democratic Party | $1,439 | $542 | $898 | 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
This section will contain facts and figures related to this district's elections when those are available.
Ballot access
The table below details filing requirements for U.S. House candidates in Illinois in the 2026 election cycle. For additional information on candidate ballot access requirements in Illinois, click here.
| Filing requirements for U.S. House candidates, 2026 | ||||||
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| State | Office | Party | Signatures required | Filing fee | Filing deadline | Source |
| Illinois | U.S. House | Established parties | Not less than .5% (.005) of the qualified primary electors of their party in the congressional district | N/A | 11/3/2025 | Source |
| Illinois | U.S. House | Independents | Not less than 5% nor more than 8% (or 50 more than the minimum, whichever is greater) of the total number of persons who voted at the last regular general election within the congressional district. | N/A | 5/26/2026 | Source |
See also
- Illinois' 1st Congressional District election, 2026 (March 17 Republican primary)
- Illinois' 1st Congressional District election, 2026
- United States House elections in Illinois, 2026 (March 17 Democratic primaries)
- United States House elections in Illinois, 2026 (March 17 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
