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Illinois' 9th Congressional District election, 2026 (March 17 Republican primary)
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| Illinois' 9th 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 Republican Party primary takes place on March 17, 2026, in Illinois' 9th 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 |
|---|---|---|
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. Illinois uses an open primary system. Voters do not have to register with a party, but they do have to choose, publicly, which party's ballot they will vote on at the primary election.[1][2]
For information about which offices are nominated via primary election, see this article.
This page focuses on Illinois' 9th Congressional District Republican primary. For more in-depth information on the district's Democratic primary and the general election, see the following pages:
- Illinois' 9th Congressional District election, 2026 (March 17 Democratic primary)
- Illinois' 9th 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
Republican primary election
Republican primary for U.S. House Illinois District 9
Rocio Cleveland and Mark Su are running in the Republican primary for U.S. House Illinois District 9 on March 17, 2026.
Candidate | ||
 | Rocio Cleveland | |
 | Mark Su  | |
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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. | ||||
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Candidate profiles
This section includes candidate profiles that may be created in one of two ways: either the candidate completed Ballotpedia's Candidate Connection survey, or Ballotpedia staff may compile a profile based on campaign websites, advertisements, and public statements after identifying the candidate as noteworthy. For more on how we select candidates to include, click here.
Party: Republican Party
Incumbent: No
Political Office: None
Submitted Biography: "I am father, husband, and long time community contributor. I was a student, a blue collar worker, a small business owner before, and I am working class people in past 20 years working as an computer software engineer and IT consultant. I also create media company to do news and video media for 12 years. I have extensive professional experience in several industry, include worked at Tech company Motorola as a software engineer, Abbott Laboratories , Bank of American as a IT consultant. Over past dozens of years, I work as a media editor , journalist to closely work with communities, city, state and other place, include promote policy, report events, help community to solve issues , etc. With my media platform , I did lot political comments, support local, state and federal candidates , and promote election. I was also a writer, which publish two books, and thousands of news and comment articles."
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 |
|---|---|---|---|---|---|
| Rocio Cleveland | Republican Party | $0 | $0 | $0 | Data not available*** |
| Mark Su | Republican Party | $10,400 | $3,039 | $7,361 | As of June 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
This section will contain information on ballot access related to this state's elections when it is available.
See also
- Illinois' 9th Congressional District election, 2026 (March 17 Democratic primary)
- Illinois' 9th 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
